📱 Call Us

FSD26 IS LIVE: Every $1 spent = 150 entries to win a 2024 F-350 Limited + $20,000 cash.
1 2
Yukon Gear & Axle

USA Standard Master Overhaul Kit For The GM 8.5 Diff w/ HD Posi or Locker

SKU: YUKZK GM8.5-HD
$217.99
  • Make: Universal

Not sure which part you need, or want to make sure it's in stock?

Give us a call. You won't get a robot, you'll get straight through to a real person who knows diesel.

📱 Call Us
32550 Entries150X
This purchase enters you to win the FSD26 truck: a 2024 F-350 Limited + $20,000 cash. Ends October 18. See the truck

USA Standard Gear Master Overhaul Kits give you all the high-quality installation parts you need to start and finish every differential job. USA Standard Gear offers more tailor-made kits than any other manufacturer in the industry to meet your specific installation needs. This kit uses high-quality Koyo/Timken bearings and races along with high quality seals and small parts. USA Standard Gear Master Overhaul Kits are the most comprehensive and complete kits on the market because USA Standard Gear does extensive research to ensure that every kit has everything you need for your application.

Installation Instructions
Installation Instructions
  • Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve, thread locker, marking compound with brush and gasket.
  • Fits GM 8.5" rear with aftermarket Positraction
  • Uses Koyo bearings and races

This Part Fits:

Year Make Model Submodel
1973-1975 Buick Apollo Base
1975 Buick Apollo SR
1971-1974,1976-1979 Buick Electra 225
1971-1974 Buick Electra 225 Custom
1974 Buick Electra 225 Limited
1973 Buick Electra Base
1975 Buick Electra Custom
1980-1989 Buick Electra Estate Wagon
1975-1985 Buick Electra Limited
1978-1985 Buick Electra Park Avenue
1985 Buick Electra T-Type
1973-1987 Buick Regal Base
1982-1983 Buick Regal Estate Wagon
1987 Buick Regal GNX
1984-1987 Buick Regal Grand National
1978-1987 Buick Regal Limited
1982 Buick Regal Limited Turbo
1978-1982 Buick Regal Sport
1976-1977 Buick Regal SR
1983-1986 Buick Regal T-Type
1975-1978 Buick Riviera Base
1975 Buick Riviera GS
1978 Buick Riviera LXXV Anniversary Edition
1976 Buick Riviera Sport
1976 Buick Riviera SR
1970,1972 Buick Skylark 350
1970-1972,1975-1979 Buick Skylark Base
1970-1972,1978-1979 Buick Skylark Custom
1976-1979 Buick Skylark S
1978 Buick Skylark Sport
1975-1977 Buick Skylark SR
1999-2000 Cadillac Escalade Base
1970-1972 Chevrolet Bel Air Base
1994 Chevrolet Blazer Base
1992-1993 Chevrolet Blazer Cheyenne
1987 Chevrolet Blazer Custom Deluxe
1988-1991 Chevrolet Blazer Scottsdale
1987-1994 Chevrolet Blazer Silverado
1994 Chevrolet Blazer Silverado Sport
1979-1980 Chevrolet C10 Big Ten
1979-1981 Chevrolet C10 Cheyenne
1981-1986 Chevrolet C10 Custom
1979-1980 Chevrolet C10 Custom Deluxe
1981 Chevrolet C10 Deluxe
1979-1986 Chevrolet C10 Scottsdale
1979-1986 Chevrolet C10 Silverado
1981-1986 Chevrolet C10 Suburban Custom
1979-1980 Chevrolet C10 Suburban Custom Deluxe
1981 Chevrolet C10 Suburban Deluxe
1979-1980,1982,1984-1986 Chevrolet C10 Suburban Scottsdale
1979-1980,1982-1986 Chevrolet C10 Suburban Silverado
1990-1993 Chevrolet C1500 454 SS
1994-1997 Chevrolet C1500 Base
1988-1998 Chevrolet C1500 Cheyenne
1999 Chevrolet C1500 LS
1988-1992 Chevrolet C1500 Scottsdale
1988-1998 Chevrolet C1500 Silverado
1990-1998 Chevrolet C1500 WT
1992-1999 Chevrolet C1500 Suburban Base
1995-1999 Chevrolet C1500 Suburban LS
1995-1997,1999 Chevrolet C1500 Suburban LT
1992-1994 Chevrolet C1500 Suburban Silverado
1994-1997,1999-2000 Chevrolet C2500 Base
1989-1998 Chevrolet C2500 Cheyenne
1999-2000 Chevrolet C2500 LS
1989-1992 Chevrolet C2500 Scottsdale
1989-1998 Chevrolet C2500 Silverado
1994-1995,1998 Chevrolet C2500 WT
1970-1980 Chevrolet Camaro Base
1979-1981 Chevrolet Camaro Berlinetta
1973-1978 Chevrolet Camaro LT
1976-1978 Chevrolet Camaro LT Rally Sport
1976-1980 Chevrolet Camaro Rally Sport
1970-1973,1975 Chevrolet Camaro RS
1981 Chevrolet Camaro Sport
1970-1972 Chevrolet Camaro SS
1970-1974,1977-1981 Chevrolet Camaro Z28
1970-1972,1986-1992 Chevrolet Caprice Base
1973-1996 Chevrolet Caprice Classic
1986-1990 Chevrolet Caprice Classic Brougham
1976-1978,1981-1982 Chevrolet Caprice Classic Estate
1976-1981 Chevrolet Caprice Classic Landau
1993-1994 Chevrolet Caprice Classic LS
1987-1990 Chevrolet Caprice Classic LS Brougham
1991-1993 Chevrolet Caprice Classic LTZ
1975-1976,1979-1980 Chevrolet Caprice Classic Sport
1973-1974 Chevrolet Caprice Estate
1975 Chevrolet Caprice Estate Wagon
1973 Chevrolet Chevelle Deluxe
1973-1977 Chevrolet Chevelle Malibu
1974-1977 Chevrolet Chevelle Malibu Classic
1974-1976 Chevrolet Chevelle Malibu Classic Estate
1973 Chevrolet Chevelle Malibu Estate
1971-1976 Chevrolet El Camino Base
1975-1976 Chevrolet El Camino Classic
1971-1974 Chevrolet El Camino Custom
1971-1976 Chevrolet El Camino SS
1996-2003 Chevrolet Express 1500 Base
1996-2003 Chevrolet Express 1500 LS
2001-2002 Chevrolet Express 1500 LT
1983 Chevrolet G10 Base
1979-1995 Chevrolet G10 Beauville
1981-1984,1986-1987 Chevrolet G10 Bonaventure
1979-1995 Chevrolet G10 Chevy Van
1979-1995 Chevrolet G10 Sportvan
1975-1995 Chevrolet G20 Beauville
1983-1984 Chevrolet G20 Bonaventure
1975-1995 Chevrolet G20 Chevy Van
1978-1981 Chevrolet G20 Nomad
1975-1995 Chevrolet G20 Sportvan
1971-1985 Chevrolet Impala Base
1975-1977 Chevrolet Impala Custom
1976 Chevrolet Impala Custom Landau
1981-1982 Chevrolet Impala Estate
1977-1979 Chevrolet Impala Landau
1976 Chevrolet Impala S
1975-1976,1979-1980 Chevrolet Impala Sport
1994-1996 Chevrolet Impala SS
1979-1981 Chevrolet K10 Cheyenne
1981-1986 Chevrolet K10 Custom
1979-1980 Chevrolet K10 Custom Deluxe
1981 Chevrolet K10 Deluxe
1979-1986 Chevrolet K10 Scottsdale
1979-1986 Chevrolet K10 Silverado
1981-1986 Chevrolet K10 Suburban Custom
1979-1980 Chevrolet K10 Suburban Custom Deluxe
1981 Chevrolet K10 Suburban Deluxe
1979-1980,1982,1984-1986 Chevrolet K10 Suburban Scottsdale
1979-1980,1982-1983,1985-1986 Chevrolet K10 Suburban Silverado
1994-1997 Chevrolet K1500 Base
1988-1998 Chevrolet K1500 Cheyenne
1999 Chevrolet K1500 LS
1988-1992 Chevrolet K1500 Scottsdale
1988-1998 Chevrolet K1500 Silverado
1991 Chevrolet K1500 Sport
1990-1998 Chevrolet K1500 WT
1992-1999 Chevrolet K1500 Suburban Base
1995-1999 Chevrolet K1500 Suburban LS
1995-1997,1999 Chevrolet K1500 Suburban LT
1992-1994 Chevrolet K1500 Suburban Silverado
1979-1980 Chevrolet K5 Blazer Cheyenne
1981-1986 Chevrolet K5 Blazer Custom
1979-1980 Chevrolet K5 Blazer Custom Deluxe
1981 Chevrolet K5 Blazer Deluxe
1984 Chevrolet K5 Blazer Scottsdale
1980-1986 Chevrolet K5 Blazer Silverado
1978-1981 Chevrolet Malibu Base
1978-1983 Chevrolet Malibu Classic
1978-1980 Chevrolet Malibu Classic Estate
1978-1981 Chevrolet Malibu Classic Landau
1979-1980 Chevrolet Malibu Classic Sport
1979-1980 Chevrolet Malibu Estate
1979 Chevrolet Malibu Landau
1979 Chevrolet Malibu Police
1979-1980 Chevrolet Malibu Sport
1973-1974 Chevrolet Monte Carlo Base
1973-1974,1976,1978 Chevrolet Monte Carlo Landau
1973,1975-1977 Chevrolet Monte Carlo S
1978 Chevrolet Monte Carlo Sport
1970-1979 Chevrolet Nova Base
1976-1977 Chevrolet Nova Concours
1973-1975,1978-1979 Chevrolet Nova Custom
1975 Chevrolet Nova LN
1975-1978 Chevrolet Nova Police
1977-1979 Chevrolet Nova Rally
1976 Chevrolet Nova SS
1987 Chevrolet R10 Custom Deluxe
1987 Chevrolet R10 Scottsdale
1987 Chevrolet R10 Silverado
1987 Chevrolet R10 Suburban Custom Deluxe
1987-1988 Chevrolet R10 Suburban Scottsdale
1987-1988 Chevrolet R10 Suburban Silverado
1989-1991 Chevrolet R1500 Suburban Scottsdale
1989-1991 Chevrolet R1500 Suburban Silverado
1994-2000 Chevrolet S10 Base
1994-2000 Chevrolet S10 LS
1994-1998 Chevrolet S10 SS
1999-2000 Chevrolet S10 Xtreme
1994-2000 Chevrolet S10 ZR2
2000 Chevrolet Suburban 1500 Base
2000 Chevrolet Suburban 1500 LS
2000 Chevrolet Suburban 1500 LT
1995-1998 Chevrolet Tahoe Base
1995-1998 Chevrolet Tahoe LS
1995-1998 Chevrolet Tahoe LT
1987 Chevrolet V10 Custom Deluxe
1987 Chevrolet V10 Scottsdale
1987 Chevrolet V10 Silverado
1987 Chevrolet V10 Suburban Custom Deluxe
1987-1988 Chevrolet V10 Suburban Scottsdale
1987-1988 Chevrolet V10 Suburban Silverado
1989-1991 Chevrolet V1500 Suburban Scottsdale
1989-1991 Chevrolet V1500 Suburban Silverado
1979-1986 GMC C1500 Base
1979-1980 GMC C1500 Heavy Half
1979-1986 GMC C1500 High Sierra
1988-1993 GMC C1500 Sierra
1979-1986 GMC C1500 Sierra Classic
1979-1982 GMC C1500 Sierra Grande
1997 GMC C1500 Sierra GT

Customer Reviews

Overall rating: 4.7 / 5 from 533 reviews.

Customer photo review of FSD 1998.5- Present 24V Cummins Clamp Lock Head Stud Kit

First off super happy with the product from quality to fit. This was my first install and it was quite easy all the necessary hardware was there. I was looking for mid price head studs and I’ll say I love them I have a 100% and a s480 I’ve had no problems with it and I beat on it every day. 10/10 recommend.

Jacob O. 5/5 Verified

FSD 1998.5- Present 24V Cummins Clamp Lock Head Stud Kit

Customer photo review of FSD 03-09 Dodge Cummins Billet Heat Exchanger

The billet heat exchanger looks great and is machined nicely. No worries about an internal failure allowing fluids to mix. It seems to be doing its job. It's more robust than the factory style cooler but I don’t believe it is quite as efficient based on warm up times I’m seeing. My only gripe is the bracket mounting bolts, they thread directly onto the cooler instead of passing all the way through and securing with nuts. Make sure to use thread locker along with the lock washers. As a rough guide, torque for M8 fasteners in aluminum should be 11-15 ft lbs, no torque spec is listed for the mounting hardware in the instructions.

Charles H. 4/5 Verified

FSD 03-09 Dodge Cummins Billet Heat Exchanger

Customer photo review of FSD 2003-2007 Dodge Cummins Heater Hose Kit Black Braided

It’s not bad, I was in a bind and needed a quick fix to get my truck back going. So first things first, the kit works. You can get rid of the steel lines and these will take their place. With about an hour and a half and a little research it doesn’t take much to get these hoses installed. However, I have some gripes about this kit. 1. You have to be very careful about how the lines are run to prevent the hose from kinking. 2. There are no p clamps or hardware included to hold the lines in place. To improve this kit, I’d toss some hose clamps, a couple bolts with some p clamps to hold the hose, maybe a couple pictures on where to run things too, or even total install instructions. Stiffer hose would be good too, in my pictures you can see that the hose going to the front of the engine is trying to kink as it makes the bend to run beside the turbo.

Noah T. 3/5 Verified

FSD 2003-2007 Dodge Cummins Heater Hose Kit Black Braided

Customer photo review of Kingspeed Billet Front Cover 94-02

It came with no gaskets this item deff needs to be sold with cover gasket as well as the seal for the crank even a plug for the vent or a fitting to hook a tube to the vent. Didn’t come with shit but bolts. Now I got to track everything else down seperatly makes it a pain in the ass. At this point I’d rather have stayed stock

Jacob M. 3/5 Verified

Kingspeed Billet Front Cover 94-02

Customer photo review of FSD 2010-2012 Dodge Cummins Factory Replacement Transmission Line Kit Black Braided

I installed them when I built my transmission. Hoses are good quality but fittings felt kind of cheap. Not a bad kit at all. I’d recommend it to anyone. Substantial trans temp difference after putting them on. My trans runs a lot cooler now that I’ve bypassed the heat exchanger. 2012 ram 2500 with 68rfe. 9/10 would recommend. Just be gentle with the fittings

Max F. 4/5 Verified

FSD 2010-2012 Dodge Cummins Factory Replacement Transmission Line Kit Black Braided

Customer photo review of FSD 03-09 Dodge Cummins Elite Drop-In Transmission Cooler Kit

I installed this cooler and a few weeks later got into a wreck that was able to damn near total my truck, the frame is bent in 4 places and it shifted my ranch and bumper a foot. This cooler was the only radiator that survived everything else was destroyed and wrapped around the cooler. I called customer support and was able to order new stainless steel brackets and this cooler will live again. I’m very impressed with the quality and strength of this part and would gladly buy it for another truck.

Fritz G. 5/5

FSD 03-09 Dodge Cummins Elite Drop-In Transmission Cooler Kit

Customer photo review of Kingspeed 06-Current Dodge Ram Billet Budget Builder Valve Cover

I love the product. I am just upset that it wasn’t clear it doesn’t come with any hardware. I currently have no clue what barb fittings and hose sizes I need to get for the valve cover to my catch can. I am currently using a hardware store setup as this is my first Cummins and my first quality build of a truck. If there’s anyway you could assist me or point me in the right direction that would be awesome. Aside from that I’ve had nothing but compliments on it, I actually won top 10 truck and SCT x GFP in Nashville a few weeks back. Everyone including myself love the valve cover.

Caleb H. 3/5 Verified

Kingspeed 06-Current Dodge Ram Billet Budget Builder Valve Cover

⌕