Quick Facts

  • Manufacturer: Dana Incorporated
  • Brand: Spicer
  • Product Series: SPL High-Torque Series
  • Product Type: High-capacity commercial-vehicle driveshaft system
  • System Category: Driveline and power-transfer equipment
  • Primary Models: SPL250 HT and SPL350 HT
  • Maximum Published Torque Rating: Up to 30,000 Nm, or approximately 22,127 lb-ft, depending on configuration
  • Lubrication Options: Service-free and standard relubricatable configurations
  • Primary Applications: Linehaul, vocational, and heavy-haul commercial vehicles
  • Primary Benefit: Increased torque capacity in a comparatively lightweight and compact driveline package
  • Production Status: Current product family; availability depends on series, configuration, and vehicle application

Overview

The Dana Spicer SPL High-Torque Series Driveshaft is a commercial-vehicle driveline system developed for applications requiring greater torque capacity from a compact shaft assembly. The series includes the SPL250 HT and SPL350 HT for linehaul, vocational, and heavy-haul vehicles.

Dana publishes torque ratings of up to 30,000 Nm, or approximately 22,127 lb-ft, for applicable High-Torque Series configurations. The product family uses fewer parts than certain competing driveline designs and is engineered to reduce weight, maintenance requirements, inventory complexity, and installation challenges.

The High-Torque Series uses the same end-yoke and universal-joint families as corresponding standard SPL products. Service-free and relubricatable versions are available and are designed to be interchangeable within approved applications.

Exact torque capacity, shaft length, tubing, rotational-speed limit, universal-joint size, operating angle, yoke arrangement, and lubrication requirements depend on the complete driveshaft specification.

Key Characteristics

  • High-torque commercial-vehicle driveshaft system
  • SPL250 HT and SPL350 HT product configurations
  • Published torque ratings of up to 30,000 Nm
  • Designed for linehaul, vocational, and heavy-haul applications
  • Compact design with high power density
  • Reduced component count compared with certain competing systems
  • Up to approximately 35 pounds lighter than certain competing configurations, according to Dana
  • Service-free and relubricatable options
  • Interchangeable service-free and relubricatable designs in approved applications
  • Uses compatible SPL end yokes and universal joints
  • Precision-balanced for commercial-vehicle operating speeds
  • Application-specific tubing, length, yoke, and slip configurations

Major Components

  • High-strength driveshaft tubing
  • SPL universal-joint crosses
  • Universal-joint bearing assemblies
  • Bearing caps and seals
  • Tube yokes
  • End yokes or flange yokes
  • Slip yoke or slip-spline assembly
  • Splined shaft
  • Protective sealing components
  • Attachment hardware and retainers
  • Balance weights
  • Center-bearing assembly when used in a multipiece driveline

Product Type and Construction

The SPL High-Torque Series is a modular driveshaft system rather than one fixed shaft assembly. Each installation is engineered using the appropriate tubing, universal joints, yokes, slip components, shaft length, wall thickness, and mounting connections.

The SPL250 HT and SPL350 HT are designed to carry greater torque while controlling shaft weight and package size. Dana uses forged and precision-machined driveline components, engineered tubing, welded tube-yoke connections, rolling-element bearings, splined slip assemblies, and contamination-resistant sealing systems.

The complete design must satisfy both torsional requirements and rotational-speed requirements. A shaft capable of carrying the required torque may still be unsuitable if its length, tubing, or balance does not provide sufficient critical-speed capability.

How the Driveline Component Works

The driveshaft receives rotating torque from the transmission output, transfer case, or upstream driveline component. It carries that torque through the shaft tube and universal joints to a drive axle or another driveline section.

Universal joints allow the shaft to transmit torque while the connected components operate at an angle. The slip assembly allows the effective length of the driveshaft to change as the suspension and drive axle move relative to the transmission and frame.

The High-Torque Series performs the same basic function as a conventional commercial driveshaft but is engineered for applications with greater torque demands, including heavy loads, low gearing, engine downspeeding, and demanding vocational operation.

Position and Function Within the Vehicle

The SPL High-Torque Series is installed within the truck’s driveline between components that must transfer rotational power. Depending on the vehicle, it may serve as the main transmission-to-axle driveshaft, one section of a multipiece driveline, or an interaxle driveshaft.

The driveshaft must transmit torque while accommodating drivetrain alignment, suspension movement, axle articulation, and changes in effective driveline length. Its position exposes it to road debris, moisture, vibration, heat, shock loads, and contamination.

Common Specifications

  • Product Models: SPL250 HT and SPL350 HT
  • Product Type: High-torque commercial-vehicle driveshaft
  • Maximum Published Torque Rating: Up to 30,000 Nm, or approximately 22,127 lb-ft, depending on model and configuration
  • Primary Service: Linehaul, vocational, and heavy-haul operation
  • Shaft Arrangement: Single-piece or multipiece, depending on application
  • Driveline Position: Main, coupling, or interaxle driveshaft
  • Lubrication Options: Service-free or relubricatable
  • Joint and Yoke Compatibility: Uses approved components shared with corresponding SPL product families
  • Weight: Configuration-dependent; Dana states that applicable systems may be up to approximately 35 pounds lighter than certain competing products
  • Tube and Shaft Dimensions: Selected according to torque, length, speed, vehicle layout, and duty cycle

Final specifications must be confirmed using the exact SPL High-Torque model, driveshaft assembly number, Dana operating parameters, and vehicle application information.

Operating Capacity and Performance

Dana publishes torque capability of up to 30,000 Nm for applicable SPL High-Torque Series configurations. Actual allowable torque depends on the selected series, shaft construction, driveline position, operating speed, joint angles, application loading, and required service life.

The SPL250 HT is intended for linehaul and vocational applications. The SPL350 HT extends the product family into linehaul, vocational, and heavy-haul service where higher torque capacity may be required.

Maximum torque capability should not be considered independently from critical speed. Shaft length, tubing diameter, wall thickness, balance, and operating speed must be evaluated together.

Installation Position and System Function

The driveshaft may be installed between the transmission and a single drive axle, between the transmission and the forward axle of a tandem, between two driveshaft sections, or between tandem drive axles. The correct shaft for one position should not automatically be used in another position.

Each location has different torque, speed, angle, length, slip-travel, and attachment requirements. The complete driveline layout must be identified before selecting or replacing the shaft.

Torque Transfer or Steering-Assist Function

The SPL High-Torque Series performs a torque-transfer function. It does not create torque or provide steering assistance. It carries rotational power from the transmission or upstream driveline component to the drive axle while permitting controlled angular and axial movement.

Driveline Geometry and Operating Angles

Universal-joint operating angles affect vibration, bearing loading, lubrication, temperature, and service life. The transmission output, driveshaft sections, center bearing, and axle input must be treated as one coordinated geometry.

Excessive or improperly matched angles can create cyclic speed variation and driveline vibration. Ride-height changes, suspension modifications, axle-position changes, center-bearing movement, and powertrain replacement can alter the driveline angles.

Angles should be measured with the vehicle at its specified ride height and in the condition established by the vehicle and driveline manufacturers.

Steering Geometry and Movement

The driveshaft does not control steering geometry. However, steering, suspension, axle, and frame modifications can affect chassis clearances and driveline alignment. Adequate clearance must be maintained throughout suspension travel, vehicle articulation, and steering movement.

Slip, Articulation, and Operating Travel

The universal joints provide articulation as the connected driveline components operate at changing angles. The slip assembly allows the shaft to change effective length as the axle moves through jounce, rebound, and frame articulation.

The slip assembly must maintain adequate spline engagement while preserving sufficient compression clearance. Too little engagement can weaken the connection, while insufficient compression clearance can cause the shaft to bottom out and impose damaging thrust loads on the transmission or axle.

Bearings, Joints, Shafts, Gears, and Structural Design

The system uses a hollow driveshaft tube connected to forged yokes, universal-joint crosses, bearing caps, splined slip components, and application-specific mounting interfaces. Multipiece arrangements may add a center bearing and supporting bracket.

The universal-joint bearings allow the joint to articulate while transferring torque. The shaft tube provides torsional strength and connects the yokes while keeping rotating mass lower than a comparable solid shaft.

The driveshaft contains no reduction gears. Gear reduction occurs inside the transmission, transfer case, or drive axle.

Materials and Component Construction

SPL High-Torque driveshafts use engineered steel tubing, forged yokes, heat-treated universal-joint components, precision-machined splines, rolling-element bearings, and application-specific sealing materials.

Material specifications, tubing dimensions, weld designs, heat treatments, and component sizes vary by model and vehicle application. Components should not be substituted solely because they appear physically similar.

Hydraulic and Electric Steering Assistance

Hydraulic and electric steering assistance are not part of the SPL High-Torque driveshaft. Steering hoses, wiring, assist motors, and linkage located near the driveline must be routed with enough clearance to prevent contact with the rotating shaft.

Electronic Controls and Driver-Assistance Integration

The driveshaft is a mechanical component and normally does not require its own electronic controller. Its speed and condition can still influence transmission controls, traction control, stability systems, vehicle-speed calculations, and vibration diagnostics.

Electronic fault codes should be considered alongside physical inspection when diagnosing driveline complaints. A mechanical vibration or joint problem may exist without producing a dedicated electronic fault.

Speed, Torque, and Load Management

Driveshaft speed changes with road speed, tire size, axle ratio, transmission gear, and driveline position. Torque changes with engine output, transmission ratio, vehicle weight, grade, traction, and driver input.

High-torque applications can impose severe shock loads during abrupt clutch engagement, sudden traction changes, wheel hop, driveline binding, or operation in deep reduction gears. The shaft should be selected for the maximum anticipated conditions rather than average operation alone.

Vibration, Balance, and Noise Control

Dana emphasizes the balance performance of the SPL High-Torque Series. Proper dynamic balance helps control noise, vibration, bearing loading, and driveline wear at operating speed.

Balance can be affected by dented tubing, missing weights, corrosion, debris buildup, incorrect assembly orientation, damaged yokes, worn universal joints, excessive runout, or improper repairs.

Driveline vibration should be diagnosed by considering shaft speed, engine speed, road speed, operating angle, vehicle load, and torque application.

Lubrication, Sealing, and Contamination Protection

Service-free versions use permanently lubricated and sealed universal-joint components. Relubricatable configurations require the correct lubricant at the specified service interval.

Seals help retain lubricant while limiting the entry of water, dirt, road salt, and other contaminants. Damaged seals can shorten bearing life even before measurable looseness appears.

Relubricatable universal joints and slip assemblies should be serviced according to current Dana procedures and the vehicle’s duty cycle.

Duty Cycle and Operating Conditions

The SPL High-Torque Series serves applications with demanding torque and durability requirements. Linehaul vehicles may accumulate long periods of continuous high-speed operation, while vocational and heavy-haul trucks may experience low-speed high-torque work, steep grades, uneven terrain, contamination, and repeated suspension articulation.

The correct configuration and maintenance program should reflect the actual application, including vehicle weight, gearing, road surface, climate, annual mileage, idle time, start frequency, and exposure to water or debris.

Mounting and Installation

Installation requires the correct shaft length, tubing, SPL series, universal joints, yokes, flanges, fasteners, slip position, phasing, and operating angles. Mating surfaces should be clean, and attachment hardware should meet the specified condition and torque.

A heavy driveshaft must be supported during removal and installation. Driveshaft sections should be marked before disassembly when their original orientation or phasing must be preserved.

After installation, the complete driveline should rotate without contact or binding. Slip travel, fastener security, operating angles, and clearances should be verified before returning the vehicle to service.

Alignment, Driveline, and Mounting Geometry

Transmission position, powertrain mounts, center-bearing height, axle-pinion angle, suspension ride height, and frame alignment all influence driveline geometry. A problem in one area can affect multiple universal joints and shaft sections.

Driveline geometry should be checked after transmission replacement, axle repair, suspension changes, center-bearing service, frame repair, ride-height adjustment, or repeated universal-joint failure.

Vehicle, Transmission, Axle, and Steering Compatibility

Compatibility depends on the vehicle manufacturer, model, wheelbase, engine torque, transmission, drive-axle configuration, axle ratio, suspension, ride height, driveline position, shaft speed, and duty cycle.

The transmission and axle yokes or flanges must match the driveshaft connections. Adequate clearance must be maintained around the frame, crossmembers, exhaust system, suspension, brake equipment, steering components, hydraulic lines, and electrical wiring.

Related Component and System Compatibility

The driveshaft must be compatible with the transmission output, drive axles, universal joints, yokes, flanges, slip components, center bearings, suspension travel, and vehicle frame layout.

Dana states that the High-Torque Series uses the same end yokes and universal joints as corresponding SPL products, which can help reduce parts inventory. Compatibility must still be verified using the complete series and component numbers.

Common Applications

  • Linehaul tractors
  • Engine-downsped highway tractors
  • Heavy-haul tractors
  • Dump trucks
  • Concrete mixers
  • Refuse trucks
  • Logging trucks
  • Construction vehicles
  • Mining and quarry vehicles
  • Oilfield trucks
  • Recovery and towing vehicles
  • Specialized severe-duty trucks

Advantages

  • High torque capacity for demanding commercial applications
  • Published ratings of up to 30,000 Nm in applicable configurations
  • Compact driveline package
  • Reduced weight compared with certain competing systems
  • Reduced component count
  • Service-free and relubricatable options
  • Interchangeable lubrication configurations where approved
  • Uses compatible SPL end yokes and universal joints
  • Supports linehaul, vocational, and heavy-haul applications
  • Precision-balanced design
  • Can support engine-downspeeding driveline strategies when properly specified
  • Backed by Dana and the Spicer parts and service network

Limitations or Considerations

  • Exact capacity varies by model and shaft configuration
  • High torque capacity does not eliminate critical-speed limits
  • Incorrect operating angles can cause vibration and premature wear
  • Improper phasing can produce severe vibration
  • Damaged tubing can compromise balance and structural strength
  • Service-free components require replacement when worn
  • Relubricatable components require scheduled service
  • Vehicle and driveline compatibility must be verified
  • Custom shaft work requires qualified driveline equipment and technicians
  • Improper installation can damage the transmission, axle, bearings, or surrounding equipment

Driver and Operator Experience

A properly selected and maintained SPL High-Torque driveshaft should transfer power without noticeable clunking, shuddering, binding, or speed-related vibration. Its operation is normally transparent to the driver.

Drivers should report new vibration, a clunk during acceleration or deceleration, shudder under load, scraping, or unusual noise beneath the vehicle. A minor driveline symptom can develop into a significant mechanical or safety problem if ignored.

Steering Feel and Driver Feedback

The driveshaft does not directly control steering feel. Driveline vibration can still be transmitted through the cab floor, seat, pedals, or steering wheel. Diagnosis should determine whether the vibration follows road speed, engine speed, torque application, or steering movement.

Operating Speed, Angle, and Load Management

The vehicle must remain within the approved torque, rotational-speed, operating-angle, shaft-length, and slip-travel limits of the complete driveline. A high-torque designation does not authorize unlimited vehicle weight, engine output, road speed, or joint angle.

Overloading, overspeed, severe shock loading, driveline binding, or insufficient slip travel can reduce service life and create a risk of component failure.

Control Setup and System Calibration

The mechanical driveshaft does not normally require electronic programming or calibration. After installation, technicians should verify phasing, balance orientation, operating angles, attachment-hardware torque, slip position, center-bearing alignment, and rotational clearance.

Inspection and Wear Points

  • Universal-joint crosses
  • Bearing caps and seals
  • Slip splines and protective boots
  • Driveshaft tube straightness
  • Dents, gouges, corrosion, or impact damage
  • Tube-to-yoke welds
  • End yokes and flange yokes
  • Fasteners and retaining hardware
  • Balance weights
  • Center-bearing assembly where equipped
  • Center-bearing bracket and rubber support
  • Signs of heat, lubricant loss, looseness, or metal contact
  • Clearance around hoses, wiring, crossmembers, and exhaust components

Lubrication Requirements

Service-free SPL High-Torque universal joints are permanently lubricated and sealed. They do not receive routine grease service but still require inspection for looseness, seal damage, overheating, and contamination.

Relubricatable universal joints and slip assemblies require the specified lubricant at the applicable service interval. Lubricant must reach the intended bearing and spline lubrication paths.

The correct maintenance procedure should be determined from the complete driveshaft model and current Dana service information.

Component Service Life and Rebuildability

Service life depends on torque loading, shaft speed, operating angles, balance, lubrication, contamination, alignment, road conditions, and driving practices. High torque capacity does not prevent wear caused by poor geometry or inadequate maintenance.

Universal joints, yokes, slip components, center bearings, and complete driveshaft assemblies may be replaced or rebuilt when suitable parts and approved procedures are available. Driveshaft rebuilding should be completed by a qualified facility with appropriate inspection, welding, runout-measurement, and balancing equipment.

Shaft, Joint, Bearing, Gear, and Linkage Service Life

The shaft tube can remain serviceable for an extended period when it stays straight, correctly balanced, and free from structural damage. Universal joints, slip splines, seals, and center bearings are wear components whose service life depends heavily on operating conditions.

The SPL High-Torque driveshaft does not contain reduction gears or steering linkage. Gear and linkage service requirements belong to the transmission, axle, or steering system.

Seal, Hose, Sensor, and Electronic Service Life

Universal-joint and slip-assembly seals should be inspected for damage, lubricant loss, and contamination entry. The standard driveshaft does not contain hydraulic hoses, electronic sensors, or control modules.

Nearby hoses, wiring, sensors, and connectors must remain securely routed away from the rotating shaft and universal joints.

Maintenance and Ownership Notes

Routine maintenance should include inspection for universal-joint looseness, damaged seals, dented tubing, missing balance weights, cracked welds, worn slip splines, damaged center bearings, loose fasteners, corrosion, and contact with surrounding components.

Relubricatable components should be serviced according to the applicable Dana and vehicle-manufacturer schedule. Service-free components should not be assumed to be inspection-free.

Vibration, repeated fastener loosening, or abnormal joint wear should be corrected before secondary damage occurs to the transmission, axles, bearings, seals, mounts, or frame equipment.

Common Driveline and Steering Problems

  • Speed-related vibration: Shaft imbalance, excessive runout, dented tubing, missing balance weights, incorrect phasing, or poor driveline angles may be responsible.
  • Clunk during power changes: Worn universal joints, loose yokes, worn splines, loose fasteners, or excessive driveline backlash may cause the noise.
  • Universal-joint wear: Lubrication loss, contamination, overloading, excessive angles, high operating temperature, or incorrect installation can shorten joint life.
  • Slip-spline binding: Corrosion, damaged splines, contamination, inadequate lubrication, or incorrect assembly may prevent normal axial movement.
  • Center-bearing failure: Incorrect mounting height, poor alignment, worn rubber support, shaft imbalance, or excessive joint angles can damage the bearing.
  • Repeated fastener loosening: Incorrect hardware, improper torque, worn mating surfaces, vibration, or installation errors may be responsible.
  • Tube or weld damage: Impact, corrosion, overloading, improper repair, or contact with surrounding equipment can compromise the shaft.
  • Premature replacement failure: Installing a new component without correcting driveline angles, balance, alignment, or mounting problems can allow the failure to repeat.

Safety and Service Precautions

A commercial driveshaft is heavy and can rotate at high speed. The vehicle must be secured against movement, and the shaft must be supported before attachment hardware is removed. Never work beneath a vehicle supported only by a lifting device.

Do not operate a vehicle with a loose, cracked, severely dented, improperly attached, or visibly failing driveshaft. A separated shaft can damage the vehicle and create a serious roadway hazard.

Driveshaft welding, straightening, shortening, lengthening, and dynamic balancing should be performed by a qualified driveline facility using approved specifications and procedures.

Identification Information

Identification information may be found on a driveshaft label, component tag, universal-joint kit, yoke, vehicle build record, or parts record. Record the complete information rather than relying on appearance alone.

  • Vehicle manufacturer, model, year, and VIN
  • SPL250 HT or SPL350 HT designation
  • Complete driveshaft assembly or part number
  • Driveline position
  • Installed shaft length and measurement method
  • Tube diameter and wall specification
  • Universal-joint series and dimensions
  • End-yoke or flange configuration
  • Slip-assembly configuration
  • Center-bearing information where applicable
  • Transmission and axle manufacturers and models
  • Service-free or relubricatable design

Buying Considerations

  • Confirm whether SPL250 HT or SPL350 HT is required.
  • Identify the shaft’s exact driveline position.
  • Verify maximum engine and driveline torque.
  • Calculate maximum rotational speed.
  • Confirm installed and compressed shaft lengths.
  • Verify tubing and critical-speed requirements.
  • Match the transmission and axle connections.
  • Confirm universal-joint and yoke specifications.
  • Choose the correct lubrication configuration.
  • Verify operating angles and slip travel.
  • Check center-bearing requirements for multipiece drivelines.
  • Review linehaul, vocational, or heavy-haul duty-cycle requirements.
  • Confirm replacement-component and service support.
  • Use a qualified driveline facility for custom assembly work.

Variants and Configurations

  • SPL250 HT for applicable linehaul and vocational applications
  • SPL350 HT for applicable linehaul, vocational, and heavy-haul applications
  • Service-free universal-joint configurations
  • Standard relubricatable configurations
  • Single-piece driveshaft assemblies
  • Multipiece driveshaft assemblies
  • Main driveshaft configurations
  • Coupling-shaft configurations
  • Interaxle driveshaft configurations
  • Application-specific tubing sizes and wall thicknesses
  • Different yoke, flange, spline, and slip arrangements
  • Vehicle-specific shaft lengths and balance specifications

Comparison to Similar Equipment

Compared with the Dana Spicer Life Series Commercial Driveshaft, the SPL High-Torque Series is directed toward applications requiring greater torque capacity. The standard Life Series covers a broader range of medium-duty and conventional heavy-duty vehicles.

Compared with the Meritor Permalube RPL Series Driveline, the Spicer High-Torque Series uses Dana’s SPL joint, yoke, spline, sealing, and shaft designs. Vehicle specifications and mounting interfaces determine whether either system is appropriate.

Compared with a conventional lower-capacity driveshaft, the High-Torque Series can support greater torque without automatically requiring the weight and packaging of a much larger driveline. The complete shaft must still satisfy operating-angle and critical-speed requirements.

Best Fit For

  • Vehicles originally specified with an SPL High-Torque driveline
  • High-torque linehaul tractors
  • Engine-downsped highway tractors
  • Heavy-haul tractors
  • Vocational trucks with severe torque demands
  • Construction and mining vehicles
  • Logging and oilfield trucks
  • Fleets seeking a compact high-capacity driveline
  • Operators seeking service-free options where available
  • Fleets using genuine Spicer replacement components

Related Vehicle and Trailer Types

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Regulatory and Compliance Notes

Driveshaft installation and repair must preserve safe vehicle operation and comply with applicable vehicle-manufacturer, component-manufacturer, inspection, and workplace-safety requirements.

A modified driveline must retain adequate torque capacity, critical-speed capability, balance, fastener retention, operating geometry, slip travel, and surrounding-component clearance.

Visible looseness, cracked or damaged tubing, failing universal joints, missing fasteners, or unsafe center-bearing support may require the vehicle to be removed from service until repaired.

Real World Operating Notes

A driveshaft rated for high torque can still fail prematurely when it operates at excessive angles, exceeds its safe rotational speed, lacks adequate slip travel, or is installed out of phase.

Driveline vibration should not automatically be blamed on the shaft. Tire balance, wheel runout, axle alignment, ride height, powertrain mounts, center-bearing position, and transmission or axle problems may produce similar symptoms.

Fleet maintenance records should identify the exact SPL series and whether the joint is service-free or relubricatable. Applying one lubrication schedule to every driveshaft can lead to missed service or unnecessary work.

Engine-downsped powertrains may reduce engine speed while increasing torque within portions of the driveline. The driveshaft must be engineered for the resulting torque and speed conditions.

Frequently Asked Questions

What is the Dana Spicer SPL High-Torque Series Driveshaft?

It is a commercial-vehicle driveshaft family developed for linehaul, vocational, and heavy-haul applications requiring high torque capacity.

Which High-Torque Series models are available?

Dana identifies the SPL250 HT and SPL350 HT as the primary High-Torque Series configurations.

How much torque can the system handle?

Dana publishes ratings of up to 30,000 Nm, or approximately 22,127 lb-ft, for applicable configurations. The exact rating must be confirmed for the complete driveshaft.

Is the driveshaft service-free?

Service-free and standard relubricatable configurations are available. The installed version must be identified before establishing its maintenance requirements.

Are service-free and relubricatable versions interchangeable?

Dana states that the two designs are interchangeable in approved applications. The complete series, component numbers, and vehicle specification must still be verified.

What is the difference between SPL250 HT and SPL350 HT?

The SPL250 HT serves applicable linehaul and vocational applications. The SPL350 HT extends into linehaul, vocational, and heavy-haul applications with different capacity and configuration requirements.

Does a high-torque driveshaft eliminate critical-speed concerns?

No. Shaft length, tubing, rotational speed, balance, and operating geometry must still remain within the approved limits.

What causes driveshaft vibration?

Common causes include imbalance, damaged tubing, worn universal joints, incorrect phasing, excessive runout, poor operating angles, center-bearing problems, and loose mounting hardware.

Can a damaged high-torque driveshaft be repaired?

Some assemblies can be rebuilt or replaced by a qualified driveline facility. Structural condition, specifications, parts availability, welding requirements, runout, and balance must be evaluated.

How can the correct replacement driveshaft be identified?

Use the vehicle VIN, SPL series, complete assembly number, driveline position, shaft dimensions, tubing, yoke or flange type, universal-joint size, transmission model, and axle information.

Availability and Where to Find

Dana Spicer SPL High-Torque Series driveshafts and replacement components may be available through authorized Spicer distributors, commercial-truck dealers, heavy-duty parts suppliers, driveline specialists, and qualified driveshaft repair facilities.

Availability depends on the SPL250 HT or SPL350 HT series, shaft dimensions, tubing, universal joints, yokes, flanges, lubrication configuration, and vehicle application.

Current specifications, application information, service literature, warranty information, and distributor resources are available through the Dana Spicer SPL High-Torque Series product page and the Spicer Parts website.

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