Select the year of your Chevrolet Blazer:

Yukon Dura Grip Positraction for GM 12 Bolt Truck
The Yukon Dura Grip Positraction (Part Number: YDGGM12T-4-30-1) is engineered for those who demand reliability and performance from their drivetrain. Designed specifically for GM 12 bolt differentials, this limited slip differential delivers smooth yet aggressive traction, making it an ideal choice for a variety of driving conditions. Whether you're tackling rugged trails or cruising on the highway, the Dura Grip ensures that power is effectively distributed to the wheels, enhancing overall vehicle stability.
Key Features
- Compatible with GM 12T differential
- Designed for 30 spline axles
- Optimized for gear ratios of 3.73 and up
- Constructed with high-strength 4320 chromoly spider gears for exceptional durability
- Fully rebuildable design allows for extended product life
- Proudly assembled in the USA with extensive product testing
Specifications
- Assembled: Yes
- Axle Shaft Spline Quantity: 30
- Axle Type: Semi Floating
- Bolt Hole Quantity: 12
- Case Included: Yes
- Differential Brand: GM
- Gear Ratio Compatibility: 3.73 and up
- Heat Treated: Yes
- Material: Steel
Fitment
The Yukon Dura Grip is compatible with the following models:
- Chevrolet Blazer: 1969-1974 & 1987
- Chevrolet C/K 10: 1963-1986
- Chevrolet G10: 1975-1981
- Chevrolet G10 Van: 1970-1974
- Chevrolet K5 Blazer: 1975-1986
- Chevrolet R/V 10: 1987
- Chevrolet Suburban: 1963-1988
- GMC C/K 15: 1966-1978
- GMC C/K 1500: 1979-1986
- GMC G1500: 1983-1987
- GMC R1500: 1987
- GMC V1500: 1987
Upgrade your GM truck's performance with the Yukon Dura Grip Positraction, built to withstand the rigors of both off-road and on-road driving while providing the traction you need.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
Make Vehicle | Model | Year |
---|---|---|
1969-1974, 1987 Chevrolet Blazer |
Blazer | 1969-1974, 1987 |
1963-1986 Chevrolet C/K 10 |
C/K 10 | 1963-1986 |
1975-1981 Chevrolet G10 |
G10 | 1975-1981 |
1970-1974 Chevrolet G10 Van |
G10 Van | 1970-1974 |
1975-1986 Chevrolet K5 Blazer |
K5 Blazer | 1975-1986 |
1987 Chevrolet R/V 10 |
R/V 10 | 1987 |
1963-1988 Chevrolet Suburban |
Suburban | 1963-1988 |
1966-1978 GMC C/K 15 |
C/K 15 | 1966-1978 |
1979-1986 GMC C/K 1500 |
C/K 1500 | 1979-1986 |
1983-1987 GMC G1500 |
G1500 | 1983-1987 |
1987 GMC R1500 |
R1500 | 1987 |
1987 GMC V1500 |
V1500 | 1987 |
Upon notification of a warranty claim, Yukon shall investigate the claim of defect, and, in the event of a verified defect, shall, at their sole choice, either repair the defective product, replace it, or refund the purchase price.
This warranty does not cover, and Yukon shall not be liable for, incidental or consequential damages, including loss of time, road service charges, labor charges, inconvenience, loss of vehicle use, loss of revenues, or loss or damage to personal property (including loss or damage to vehicle parts due to the failure of the Yukon product)*. In addition, this warranty does not cover, and Yukon shall not be liable for, any undertaking, representation, or agreements made by dealers or other third parties selling Yukon Gear & Axle products, except where such agreements are within the provisions of this Warranty statement. Also, this warranty does not cover damage to the axle caused by or facilitated by failure of a non-Yukon component.
This agreement offers you specific legal rights. You may also have other rights which vary from state to state.
YUKON WARRANTY BY PRODUCT
Spool
- Length:As long as original purchaser owns vehicle in which Spool is originally installed
- Notes:It is normal for Spools to cause tire chatter, squeal, or scrubbing when vehicle is not moving in a straight line. Both rear tires must measure the same height from ground to top of wheel for Spool to function properly without premature wear.
- Length:As long as original purchaser owns vehicle in which Super Joint is originally installed
- Notes:Warranty coverage is for breakage of cross section or caps only. Failure by wear or galling is not covered.
- Length:One (1) Year
- Notes:Covers parts for one year against manufacturers defects.
- Length:Ten (10) Years
- Notes:Covers parts for ten years against manufacturing defects.
- Length:Ten (10) Years
- Notes:Covers parts for ten years against manufacturing defects.
- Length:Limited Lifetime
- Notes:Limited Lifetime warranty covering manufacturing defects and axle breakage for as long as you own the vehicle. This warranty is not transferable to another party. "No Questions Asked" replacement for first warranty return, however, Yukon reserves the right to either replace axle or refund original purchase price after the first warranty claim. Yukon (through RANDYS Worldwide Automotive) makes final determination on warranty considerations.
- Length:Limited Lifetime
- Notes:Limited Lifetime warranty covering manufacturing defects and axle breakage for as long as you own the vehicle. This warranty is not transferable to another party. "No Questions Asked" replacement for first warranty return, however, Yukon reserves the right to either replace axle or refund original purchase price after the first warranty claim. Yukon (through RANDYS Worldwide Automotive) makes final determination on warranty considerations.
- Length:One (1) Year
- Notes:Warrantied against manufacturing defects for one (1) year.
- Length:One (1) Year
- Notes:Exclusions apply, does not cover premature clutch wear or abuse. It is normal for Positraction differentials to cause tire chatter, squeal, or scrubbing when vehicle is not moving in a straight line. Both rear tires must measure the same height from ground to top of wheel for differential to function properly without premature wear. Limited slip additive or appropriate friction modifier must be used with oil to reduce Positraction chatter.
- Length:Six (6) Years
- Notes:All Zip Lockers come with a six (6) year warranty against manufacturer defect, including any collaterally damaged parts and associated labor, up to $2,000*, for the first two (2) years. Collaterally damaged parts must be submitted for inspection. Receipts for parts and associated labor must be submitted as well. Only claims deemed reasonable by Yukon Gear & Axle will be accepted. Offer may be discontinued without advance notice.
- Length:One (1) Year
- Notes:Covers the replacement of the unit and any collaterally damaged parts and associated labor, up to $2,000. Collaterally damaged parts must be submitted for inspection. Receipts for parts and associated labor must be submitted as well. Only claims deemed reasonable by Yukon Gear & Axle will be accepted. Offer may be discontinued without advance notice.
- Length:One (1) Year
- Notes:Covers parts for one year against manufacturing defects.
- Length:One (1) Year
- Notes:Covers parts for one year against manufacturing defects.
- Length:One (1) Year
- Notes:Covers parts for one year against manufacturing defects.
- Length:One (1) Year
- Notes:Includes BK, MK, PK, and YK. Covers parts for one year against manufacturing defects.
- Length:One (1) Year
- Notes:One year against manufacturing defects. Exclusions apply, does not cover clutch wear in limited slip differentials.
- Length:Limited Lifetime
- Notes:Limited Lifetime warranty covering manufacturing defects and breakage for as long as you own the vehicle. This warranty is not transferable to another party. "No Questions Asked" replacement for first warranty return, however, Yukon reserves the right to either replace the part or refund original purchase price after the first warranty claim. Yukon (through RANDYS Worldwide Automotive) makes final determination on warranty considerations.
- Length:Limited Lifetime
- Notes:Limited Lifetime warranty covering manufacturing defects and breakage for as long as you own the vehicle. This warranty is not transferable to another party. "No Questions Asked" replacement for first warranty return, however, Yukon reserves the right to either replace the part or refund original purchase price after the first warranty claim. Yukon (through RANDYS Worldwide Automotive) makes final determination on warranty considerations
- Length:One (1) Year
- Notes:Warrantied against manufacturing defects for one (1) year. Longer warranty is available through purchase of a Y.E.S. plan.
Installation Instructions
Click to view the Installation Instructions here
Check out these other great products
