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Upgrade Your Ride with the Yukon Gear & Axle YG GM12T-308
If you're looking to enhance your vehicle's performance, the Yukon Gear & Axle YG GM12T-308 is your go-to solution. This high-performance ring and pinion gear set is designed specifically for GM 12 bolt trucks, making it a perfect fit for a variety of classic and modern models. With Yukon's commitment to quality, you can trust that this gear set will elevate your driving experience, whether you're cruising the streets or tackling off-road terrains.
Why Choose Yukon Gear & Axle?
Yukon Gear & Axle is renowned in the automotive industry for setting the standard in gear performance and durability. Their engineers utilize cutting-edge design techniques and advanced heat-treating processes to ensure that each gear set meets stringent quality specifications. Plus, with the Y.E.S. Plan, you get a lifetime, no-questions-asked protection plan for as long as you own your vehicle. That’s peace of mind you can count on!
Features
- Fits GM 12 bolt trucks
- 8.875" ring gear diameter
- 30 spline pinion
- 12 ring gear bolts
- Gear ratio: 3.08
Specifications
- Axle Type: Semi Float
- Cover Bolt Quantity: 12
- Mounting Hardware Included: No
Fitment
The YG GM12T-308 is compatible with a variety of Chevy and GMC models, including:
- 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 (1963-1987)
- GMC C/K 15 (1966-1978)
- GMC C/K 1500 (1979-1986)
- GMC G1500 (1983-1987)
- GMC R1500 (1987)
- GMC V1500 (1987)
Real-World Feedback
Chevrolet Blazer owners have shared their experiences with the YG GM12T-308, noting how it has transformed their driving dynamics. One owner remarked, “Installed this gear set in my 1974 Blazer, and the acceleration is noticeably snappier, especially with my new 33-inch tires. No rubbing issues, and it feels like I’ve got more torque on tap!”
Whether you're upgrading for performance, handling larger tires, or just optimizing traction, the Yukon Gear & Axle YG GM12T-308 is a smart choice for your GM truck. Get ready to feel the difference!
Proposition 65
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Vehicle Make/Model | Year | Trims |
|---|---|---|
| Chevrolet Blazer | 1969-1974 | Base |
| Chevrolet Blazer | 1987 | Silverado |
| Chevrolet Blazer | 1987 | Custom Deluxe |
| Chevrolet C10 | 1975-1986 | Scottsdale |
| Chevrolet C10 | 1975-1981 | Cheyenne |
| Chevrolet C10 | 1975-1986 | Silverado |
| Chevrolet C10 | 1975-1980 | Custom Deluxe |
| Chevrolet C10 | 1975-1986 | Custom |
| Chevrolet C10 | 1978-1980 | Big Ten |
| Chevrolet C10 | 1981 | Deluxe |
| Chevrolet C10 Panel | 1963-1967 | Base |
| Chevrolet C10 Pickup | 1963-1974 | Base |
| Chevrolet C10 Suburban | 1967-1969, 1971-1974 | Base |
| Chevrolet C10 Suburban | 1975-1980, 1982, 1984-1986 | Scottsdale |
| Chevrolet C10 Suburban | 1975-1980, 1982-1986 | Silverado |
| Chevrolet C10 Suburban | 1975-1980 | Custom Deluxe |
| Chevrolet C10 Suburban | 1981-1986 | Custom |
| Chevrolet C10 Suburban | 1981 | Deluxe |
| Chevrolet C20 Suburban | 1967-1969, 1971-1974 | Base |
| Chevrolet C20 Suburban | 1975-1980 | Custom Deluxe |
| Chevrolet C20 Suburban | 1975-1977, 1979-1980, 1982-1986 | Silverado |
| Chevrolet C20 Suburban | 1975-1980, 1982, 1984-1986 | Scottsdale |
| Chevrolet C20 Suburban | 1981-1986 | Custom |
| Chevrolet C20 Suburban | 1981 | Deluxe |
| Chevrolet G10 | 1975-1981 | Chevy Van |
| Chevrolet G10 | 1975-1981 | Beauville |
| Chevrolet G10 | 1975-1981 | Sportvan |
| Chevrolet G10 | 1981 | Bonaventure |
| Chevrolet G10 Van | 1970-1974 | Sportvan |
| Chevrolet G10 Van | 1970-1974 | Base |
| Chevrolet K10 Pickup | 1963-1974 | Base |
| Chevrolet K10 Suburban | 1967-1969, 1971-1974 | Base |
| Chevrolet K10 Suburban | 1975-1980 | Custom Deluxe |
| Chevrolet K10 Suburban | 1975-1977, 1979-1980, 1982-1983, 1985-1986 | Silverado |
| Chevrolet K10 Suburban | 1975-1980, 1982, 1984-1986 | Scottsdale |
| Chevrolet K10 Suburban | 1981 | Deluxe |
| Chevrolet K10 Suburban | 1981-1986 | Custom |
| Chevrolet K20 Suburban | 1967-1969, 1971-1974 | Base |
| Chevrolet K20 Suburban | 1975-1980 | Custom Deluxe |
| Chevrolet K20 Suburban | 1975-1980, 1982, 1984-1986 | Scottsdale |
| Chevrolet K20 Suburban | 1975-1977, 1979-1980, 1982-1983, 1985-1986 | Silverado |
| Chevrolet K20 Suburban | 1981-1986 | Custom |
| Chevrolet K20 Suburban | 1981 | Deluxe |
| Chevrolet K5 Blazer | 1975, 1977-1980 | Custom Deluxe |
| Chevrolet K5 Blazer | 1975-1980 | Cheyenne |
| Chevrolet K5 Blazer | 1976 | Base |
| Chevrolet K5 Blazer | 1978, 1980-1986 | Silverado |
| Chevrolet K5 Blazer | 1981 | Deluxe |
| Chevrolet K5 Blazer | 1981-1986 | Custom |
| Chevrolet K5 Blazer | 1984 | Scottsdale |
| Chevrolet R10 | 1987 | Scottsdale |
| Chevrolet R10 | 1987 | Custom Deluxe |
| Chevrolet R10 | 1987 | Silverado |
| Chevrolet R10 Suburban | 1987 | Silverado |
| Chevrolet R10 Suburban | 1987 | Scottsdale |
| Chevrolet R10 Suburban | 1987 | Custom Deluxe |
| Chevrolet R20 Suburban | 1987 | Silverado |
| Chevrolet R20 Suburban | 1987 | Custom Deluxe |
| Chevrolet R20 Suburban | 1987 | Scottsdale |
| Chevrolet S10 Blazer | 1987 | Tahoe |
| Chevrolet S10 Blazer | 1987 | Sport |
| Chevrolet S10 Blazer | 1987 | High Country |
| Chevrolet S10 Blazer | 1987 | Base |
| Chevrolet Suburban | 1963-1966, 1987 | Base |
| Chevrolet V10 | 1987 | Silverado |
| Chevrolet V10 | 1987 | Scottsdale |
| Chevrolet V10 | 1987 | Custom Deluxe |
| Chevrolet V10 Suburban | 1987 | Scottsdale |
| Chevrolet V10 Suburban | 1987 | Custom Deluxe |
| Chevrolet V10 Suburban | 1987 | Silverado |
| Chevrolet V20 Suburban | 1987 | Custom Deluxe |
| Chevrolet V20 Suburban | 1987 | Silverado |
| Chevrolet V20 Suburban | 1987 | Scottsdale |
| GMC C15 | 1975-1978 | Sierra Classic |
| GMC C15 | 1975-1978 | Sierra Grande |
| GMC C15 | 1975-1978 | High Sierra |
| GMC C15 | 1975-1978 | Base |
| GMC C15 | 1977 | Indy Hauler |
| GMC C15 | 1977-1978 | Heavy Half |
| GMC C15 | 1978 | Street Coupe |
| GMC C15 Suburban | 1975-1978 | Sierra Grande |
| GMC C15 Suburban | 1975-1978 | High Sierra |
| GMC C15 Suburban | 1975-1978 | Sierra Classic |
| GMC C15 Suburban | 1975-1978 | Base |
| GMC C15/C1500 Suburban | 1967 | Base |
| GMC C1500 | 1979-1986 | Sierra Classic |
| GMC C1500 | 1979-1982 | Street Coupe |
| GMC C1500 | 1979-1986 | High Sierra |
| GMC C1500 | 1979-1982 | Sierra Grande |
| GMC C1500 | 1979-1986 | Base |
| GMC C1500 | 1979-1980 | Heavy Half |
| GMC C1500 Suburban | 1979-1982 | Sierra Grande |
| GMC C1500 Suburban | 1979-1986 | High Sierra |
| GMC C1500 Suburban | 1979-1986 | Sierra Classic |
| GMC C1500 Suburban | 1979-1986 | Base |
| GMC G1500 | 1983-1984 | Rally Custom |
| GMC G1500 | 1983-1987 | Rally |
| GMC G1500 | 1983-1987 | Rally STX |
| GMC G1500 | 1983-1987 | Vandura |
| GMC K15 | 1975-1978 | Sierra Grande |
| GMC K15 | 1975-1978 | Base |
| GMC K15 | 1975-1978 | High Sierra |
| GMC K15 | 1975-1978 | Sierra Classic |
| GMC K15 | 1977 | Indy Hauler |
| GMC K15 Suburban | 1975-1978 | Sierra Classic |
| GMC K15 Suburban | 1975-1978 | High Sierra |
| GMC K15 Suburban | 1975-1978 | Sierra Grande |
| GMC K15 Suburban | 1975-1978 | Base |
| GMC K15/K1500 Suburban | 1967 | Base |
| GMC K1500 | 1979-1982 | Sierra Grande |
| GMC K1500 | 1979-1986 | Sierra Classic |
| GMC K1500 | 1979-1986 | Base |
| GMC K1500 | 1979-1986 | High Sierra |
| GMC K1500 Suburban | 1979-1986 | Base |
| GMC K1500 Suburban | 1979-1982 | Sierra Grande |
| GMC K1500 Suburban | 1979-1986 | Sierra Classic |
| GMC K1500 Suburban | 1979-1986 | High Sierra |
| GMC K25/K2500 Suburban | 1967 | Base |
| GMC R1500 | 1987 | Base |
| GMC R1500 | 1987 | High Sierra |
| GMC R1500 | 1987 | Sierra Classic |
| GMC V1500 | 1987 | High Sierra |
| GMC V1500 | 1987 | Base |
| GMC V1500 | 1987 | Sierra Classic |
Yukon's mission is to build quality parts that exceed your expectations. We achieve this through state-of-the-art product design and an in-house engineering team. Our parts are then produced by leaders in OEM manufacturing and endure rigorous testing.
Yukon Gear & Axle ("Yukon") warrants the original retail purchaser that all Yukon products will be free from defects in materials and workmanship for the periods shown herein. Yukon makes no other warranty of any kind, express or implied. All other warranties, including but not limited to an implied warranty of merchantability or fitness for a particular purpose, are excluded. This warranty is offered provided that the Yukon product has been installed and maintained in accordance with Yukon instructions, and that it has not been subject to modification, accident, abnormal use or misuse. At Yukon's discretion, this warranty may be voided if installation of Yukon product(s) occurs on vehicles with tires that exceed Yukon Maximum Recommended Tire Size.
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
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
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