PowerTrax · 3991018RDY
Part #: 3991018RDY
UPC: 698231981467
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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
SHAFT, LONG, RDY, 3991018
Application summary
| Year | Make / model |
|---|---|
| 2002-2006 | Chevrolet Avalanche 2500 |
| 1975-1986 | Chevrolet C20 |
| 1973-1974 | Chevrolet C20 Pickup |
| 1973-1986 | Chevrolet C20 Suburban |
| 1988-2000 | Chevrolet C2500 |
| 1992-1999 | Chevrolet C2500 Suburban |
| 1975-1986 | Chevrolet C30 |
| 1973-1974 | Chevrolet C30 Pickup |
| 1988-2000 | Chevrolet C3500 |
| 1996-2002 | Chevrolet Express 2500 |
| 2010-2014 | Chevrolet Express 2500 |
| 1996-2002 | Chevrolet Express 3500 |
| 2010-2014 | Chevrolet Express 3500 |
| 1975-1996 | Chevrolet G30 |
| 1973-1974 | Chevrolet G30 Van |
| 1975-1986 | Chevrolet K20 |
| 1973-1974 | Chevrolet K20 Pickup |
| 1973-1986 | Chevrolet K20 Suburban |
| 1988-2000 | Chevrolet K2500 |
| 1977-1986 | Chevrolet K30 |
| 1973-1974 | Chevrolet K30 Pickup |
| 1988-2000 | Chevrolet K3500 |
| 1997-1999 | Chevrolet P30 |
| 2001-2002 | Chevrolet P30 |
| 1987-1988 | Chevrolet R20 |
| 1987-1988 | Chevrolet R20 Suburban |
| 1989 | Chevrolet R2500 |
| 1989-1991 | Chevrolet R2500 Suburban |
| 1987-1988 | Chevrolet R30 |
| 1989-1991 | Chevrolet R3500 |
| 2007 | Chevrolet Silverado 1500 Classic |
| 2001-2003 | Chevrolet Silverado 1500 HD |
| 2005-2006 | Chevrolet Silverado 1500 HD |
| 2007 | Chevrolet Silverado 1500 HD Classic |
| 1999-2009 | Chevrolet Silverado 2500 |
| 2011-2012 | Chevrolet Silverado 2500 |
| 2014-2018 | Chevrolet Silverado 2500 |
| 2001-2018 | Chevrolet Silverado 2500 HD |
| 2007 | Chevrolet Silverado 2500 HD Classic |
| 2014-2018 | Chevrolet Suburban |
| 2000-2013 | Chevrolet Suburban 2500 |
| 1987 | Chevrolet V20 |
| 1987-1988 | Chevrolet V20 Suburban |
| 1989-1991 | Chevrolet V2500 Suburban |
| 1987-1988 | Chevrolet V30 |
| 1989-1991 | Chevrolet V3500 |
| 1975-1978 | GMC C25 |
| 1975-1978 | GMC C25 Suburban |
| 1973-1974 | GMC C25/C2500 Pickup |
| 1973-1974 | GMC C25/C2500 Suburban |
| 1979-1986 | GMC C2500 |
| 1988-2000 | GMC C2500 |
| 1979-1986 | GMC C2500 Suburban |
| 1973-1974 | GMC C35/C3500 Pickup |
| 1979-1986 | GMC C3500 |
| 1988-2000 | GMC C3500 |
| 1975-1978 | GMC G35 |
| 1973-1974 | GMC G35/G3500 Van |
| 1979-1996 | GMC G3500 |
| 1975-1978 | GMC K25 |
| 1975-1978 | GMC K25 Suburban |
| 1973-1974 | GMC K25/K2500 Pickup |
| 1973-1974 | GMC K25/K2500 Suburban |
| 1979-1986 | GMC K2500 |
| 1988-2000 | GMC K2500 |
| 1979-1986 | GMC K2500 Suburban |
| 1992-1999 | GMC K2500 Suburban |
Specifications
- GTIN
- 00698231981467
- Weight
- 1.1 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
- GM 10.5
- California Proposition 65
- WARNING: Cancer - www.P65Warnings.ca.gov
- Diameter
- 23
- Grade Type
- Performance
- Length
- 165.2
- Material
- 9310 Steel
- Taxonomy A
- LD Differential
- Taxonomy B
- GM 10.5
- 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
- 1956-LR
- Used In No Slip Units
- 9207053000
Fitment status
Select a vehicle or engine to see whether this part applies to your application.
Application summary
2002-2006 Chevrolet Avalanche 2500; 1975-1986 Chevrolet C20; 1973-1974 Chevrolet C20 Pickup; 1973-1986 Chevrolet C20 Suburban; 1988-2000 Chevrolet C2500; 1992-1999 Chevrolet C2500 Suburban; 1975-1986 Chevrolet C30; 1973-1974 Chevrolet C30 Pickup; 1988-2000 Chevrolet C3500; 1996-2002 Chevrolet Express 2500; 2010-2014 Chevrolet Express 2500; 1996-2002 Chevrolet Express 3500; 2010-2014 Chevrolet Express 3500; 1975-1996 Chevrolet G30; 1973-1974 Chevrolet G30 Van; 1975-1986 Chevrolet K20; 1973-1974 Chevrolet K20 Pickup; 1973-1986 Chevrolet K20 Suburban; 1988-2000 Chevrolet K2500; 1977-1986 Chevrolet K30; 1973-1974 Chevrolet K30 Pickup; 1988-2000 Chevrolet K3500; 1997-1999 Chevrolet P30; 2001-2002 Chevrolet P30; 1987-1988 Chevrolet R20; 1987-1988 Chevrolet R20 Suburban; 1989 Chevrolet R2500; 1989-1991 Chevrolet R2500 Suburban; 1987-1988 Chevrolet R30; 1989-1991 Chevrolet R3500; 2007 Chevrolet Silverado 1500 Classic; 2001-2003 Chevrolet Silverado 1500 HD; 2005-2006 Chevrolet Silverado 1500 HD; 2007 Chevrolet Silverado 1500 HD Classic; 1999-2009 Chevrolet Silverado 2500; 2011-2012 Chevrolet Silverado 2500; 2014-2018 Chevrolet Silverado 2500; 2001-2018 Chevrolet Silverado 2500 HD; 2007 Chevrolet Silverado 2500 HD Classic; 2014-2018 Chevrolet Suburban; 2000-2013 Chevrolet Suburban 2500; 1987 Chevrolet V20; 1987-1988 Chevrolet V20 Suburban; 1989-1991 Chevrolet V2500 Suburban; 1987-1988 Chevrolet V30; 1989-1991 Chevrolet V3500; 1975-1978 GMC C25; 1975-1978 GMC C25 Suburban; 1973-1974 GMC C25/C2500 Pickup; 1973-1974 GMC C25/C2500 Suburban; 1979-1986 GMC C2500; 1988-2000 GMC C2500; 1979-1986 GMC C2500 Suburban; 1973-1974 GMC C35/C3500 Pickup; 1979-1986 GMC C3500; 1988-2000 GMC C3500; 1975-1978 GMC G35; 1973-1974 GMC G35/G3500 Van; 1979-1996 GMC G3500; 1975-1978 GMC K25; 1975-1978 GMC K25 Suburban; 1973-1974 GMC K25/K2500 Pickup; 1973-1974 GMC K25/K2500 Suburban; 1979-1986 GMC K2500; 1988-2000 GMC K2500; 1979-1986 GMC K2500 Suburban; 1992-1999 GMC K2500 Suburban; ...
PowerTrax 3991018RDY
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