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PowerTrax · 3991057REA

Part #: 3991057REA
UPC: 698231976623

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Brand: PowerTrax Series: Cross Shaft Pins

Description: Precision Differential Pinion Shaft maintains correct power distribution to all; This Differential Pinion Shaft is precision manufactured to OEM gear ratios and tooth geometry. It distributes torque efficiently between axles, maximizing traction and minimizing wear in commercial trucks.

Description:

Description

Unleash your vehicle’s full potential with our Performance Differential Pinion Shaft—engineered for racers, builders, and off-road enthusiasts who push the limits. Built to handle extreme torque loads and aggressive driving conditions, this shaft ensures your ring-and-pinion stay perfectly aligned under maximum stress. Constructed from premium alloy steel and heat-treated for superior hardness, it delivers the toughness needed for high-horsepower applications and prolonged abuse. The precision-ground surfaces reduce internal friction and ensure smooth gear mesh, translating to quicker power delivery and minimized drivetrain losses. When every foot-pound counts, you need a shaft that won’t flinch. This design resists torsional stress and pitting under heavy load, making it ideal for drag strips, lifted trucks, rock crawlers, and turbocharged builds. It's engineered to meet or exceed OE performance standards for strength, fitment, and reliability. Thanks to its easy drop-in fit with no modification required, you’ll spend less time wrenching and more time chasing performance. Whether you're dialing in a custom setup or replacing a worn unit in a built differential, this pinion shaft delivers the backbone your drivetrain demands. Push harder. Drive stronger. Trust your build.

Features & benefits

  • Designed for compatibility with OEM-specified gear oil viscosities, ensuring correct lubrication under all operating conditions.
  • Heat-treated alloy steel construction withstands peak torque demands of loaded commercial trucks, preventing gear tooth fatigue and breakage.
  • OEM-spec gear ratios preserve intended vehicle speed, performance, and fuel economy characteristics.
  • Precision fits to carrier housing bores eliminate shimming uncertainty and simplify installation for experienced drivetrain technicians.
  • Precision-machined gears and tight backlash tolerances ensure smooth power transfer and efficient torque distribution between axles.

Information

CROSS PIN- D35- OPEN- ROLL PIN

Application summary

Year Make / model
1968-1970 American Motors AMX
1978-1983 American Motors Concord
1980-1987 American Motors Eagle
1970-1977 American Motors Hornet
1968-1974 American Motors Javelin
1975-1980 American Motors Pacer
1984-1993 Jeep Cherokee
1986-1992 Jeep Comanche
1993 Jeep Grand Cherokee
1987-1993 Jeep Wrangler

Specifications

GTIN
00698231976623
Weight
0.45 lb
Height
2 in
Length
8 in
Width
2 in
EO
Legal US
Life cycle
Available to Order
AAM brand code
POT
Warehouse brand code
POT
AAIA brand code
BHKT

Attributes

App/Model
Dana 35 Standard
California Proposition 65
WARNING: Cancer - www.P65Warnings.ca.gov
Diameter
17.45
Grade Type
Performance
Length
106.4
Material
9310 Steel
Taxonomy A
LD Differential
Taxonomy B
Dana 35 Standard
Taxonomy C
Lock-Right Rebuild Components-No-Slip Rebuild Components
Taxonomy D
Cross Pins/Cross Shafts
Title
Differential Pinion Shaft
Type
Mechanical Locker
Used In Lock Right Units
2310-LR
Used In No Slip Units
9204352705

Fitment status

Select a vehicle or engine to see whether this part applies to your application.

Application summary

1968-1970 American Motors AMX; 1978-1983 American Motors Concord; 1980-1987 American Motors Eagle; 1970-1977 American Motors Hornet; 1968-1974 American Motors Javelin; 1975-1980 American Motors Pacer; 1984-1993 Jeep Cherokee; 1986-1992 Jeep Comanche; 1993 Jeep Grand Cherokee; 1987-1993 Jeep Wrangler
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