Eaton
Eaton GM 8.875T 12 Bolt Master Install Kit K-GM12TR
Eaton GM 8.875T 12 Bolt Master Install Kit K-GM12TR
Part number: 8MB1J
Regular price
$160.97 USD
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$160.97 USD
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- Tracking emailed when it ships
- Free fitment check before you order
GM 8.875T 12 Bolt Master Install Kit K-GM12TR from Eaton. The part number and specifications are listed below. Thread type and size must match on both sides; AN, NPT and metric threads do not mix.
Quick facts
- Brand: Eaton
- Part type: Fitting
Listed fitment
- 1969 - 1974 Chevrolet Blazer Base
- 1978 - 1980 Chevrolet C10 Big Ten
- 1975 - 1981 Chevrolet C10 Cheyenne
- 1975 - 1980 Chevrolet C10 Custom Deluxe
- 1975 - 1982 Chevrolet C10 Custom, Silverado, Scottsdale
- 1981 Chevrolet C10 Deluxe
- 1965 - 1967 Chevrolet C10 Panel Base
- 1964 - 1974 Chevrolet C10 Pickup Base
- 1967 - 1974 Chevrolet C10 Suburban Base
- 1981 - 1982 Chevrolet C10 Suburban Custom
- 1975 - 1980 Chevrolet C10 Suburban Custom Deluxe
- 1981 Chevrolet C10 Suburban Deluxe
- 1975 - 1982 Chevrolet C10 Suburban Silverado, Scottsdale
- 1981 Chevrolet G10 Bonaventure
- 1975 - 1981 Chevrolet G10 Chevy Van, Beauville, Sportvan
- 1964 - 1974 Chevrolet G10 Van Base
- 1968 - 1974 Chevrolet G10 Van Sportvan
- 1975 - 1980 Chevrolet K10 Custom Deluxe
- 1981 Chevrolet K10 Deluxe, Custom
- 1975 - 1981 Chevrolet K10 Silverado, Cheyenne, Scottsdale
- 1964 - 1974 Chevrolet K10 Pickup Base
- 1967 - 1974 Chevrolet K10 Suburban Base
- 1981 - 1982 Chevrolet K10 Suburban Custom
- 1975 - 1980 Chevrolet K10 Suburban Custom Deluxe
- 1981 Chevrolet K10 Suburban Deluxe
- 1975 - 1982 Chevrolet K10 Suburban Scottsdale, Silverado
- 1976 Chevrolet K5 Blazer Base
- 1975 - 1980 Chevrolet K5 Blazer Cheyenne, Custom Deluxe
- 1981 Chevrolet K5 Blazer Custom, Deluxe
- 1978 - 1981 Chevrolet K5 Blazer Silverado
- 1965 - 1966 Chevrolet Suburban Base
- 1977 - 1978 GMC C15 Heavy Half
- 1977 GMC C15 Indy Hauler
- 1975 - 1978 GMC C15 Sierra Classic, High Sierra, Base, Sierra Grande
- 1978 GMC C15 Street Coupe
- 1975 - 1978 GMC C15 Suburban Sierra Classic, Base, Sierra Grande, High Sierra
- 1967 - 1974 GMC C15/C1500 Pickup Base
- 1967 - 1974 GMC C15/C1500 Suburban Base
- 1979 - 1981 GMC C1500 Suburban Base, High Sierra, Sierra Grande, Sierra Classic
- 1967 GMC C25/C2500 Suburban Base
- …and 13 more
Tip: Confirm thread type and size on both sides, and use the right sealant or none as the fitting type requires.

Before you order: fitment and what to plan
Fittings and hardware connect lines, hoses and parts securely.
Fitment notes
- Specs, lead time and warranty come from Eaton and can change. The details above this guide are the latest we have.
Not sure it fits? Tell us exactly what you drive and we'll confirm fitment first. It's free and saves a return.
Ask about fitmentPlan the whole job
- Hose. Match hose size to the fitting.
More for your car: Fuel & air intake
Questions about fitting or hardware
Will this fit my car?
Check the title and details above for the vehicles and part number it is listed for. If you are not sure, contact us with your year, make, model, engine and trim and we will confirm fitment before you order.
Does it need thread sealant?
NPT threads do; AN and flare fittings seal on the flare and should go on dry.
Where do specs and warranty details come from?
From Eaton. Each brand sets its own specs, lead times and warranty terms, and they can change. The product details above are the latest we have.
Questions & answers
No questions yet about this part. Ask about fitment, what's in the box or installation and we'll answer here.