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

2025-09-10T01:26:19-06:00

Price: 210.89

If your GM 8.5 rear end with Posi or locker is grinding, leaking, or just worn out, the GM 8.5 HD differential rebuild kit from USA Standard Gear is the fix you need. Designed for heavy-duty GM 8.5-inch axles, this master overhaul kit restores performance, eliminates gear noise, and keeps your rig running strong.

The GM 8.5 HD differential rebuild kit includes Timken bearings and races, high-quality seals, shims, ring gear bolts, a diff cover gasket, and marking compound with a brush. Whether you're rebuilding a performance street car or a hard-working truck, this kit delivers everything needed for a smooth, hassle-free install.

Built for durability and precision, USA Standard’s GM 8.5 HD differential rebuild kit is trusted by pros and DIYers alike. It’s a one-box solution that saves time, avoids mismatched parts, and gets your differential back to peak condition.

Features and Benefits

Complete Overhaul Kit – All essential components for a full rear differential rebuild.

Timken Bearings and Races – Trusted for strength, longevity, and smooth operation.

High-Quality Seals and Shims – Prevent leaks and ensure precise gear alignment.

Ring Gear Bolts and Gasket – Secure fit and clean seal for long-term reliability.

Marking Compound and Brush – Helps set gear patterns accurately during install.

Built for GM HD Performance

Whether you're laying down torque or hauling heavy loads, the GM 8.5 HD differential rebuild kit from USA Standard Gear gives your axle the refresh it deserves. Say goodbye to gear whine and hello to smooth, confident driving.

Specifications

Specification | Details
Part Number | yukZK GM8.5-HD
Axle Type | GM 8.5" Rear (HD Posi or Locker)
Bearings | Timken
Included Components | Carrier bearings/races, pinion bearings/races, shims, ring gear bolts, diff cover gasket, inner axle seals, pinion slingers, pinion seal and nut, marking compound, brush
Brand | USA Standard Gear
Prop 65 Warning |

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
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
1973-1981 | Chevrolet | Malibu | Base
1974-1983 | Chevrolet | Malibu | Classic
1975-1976,1978-1980 | Chevrolet | Malibu | Classic Estate
1976-1981 | Chevrolet | Malibu | Classic Landau
1977,1979-1980 | Chevrolet | Malibu | Classic Sport
1973-1974,1979-1980 | Chevrolet | Malibu | Estate
1976,1979 | Chevrolet | Malibu | Landau
1979 | Chevrolet | Malibu | Police
1977,1979-1980 | 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
1994-1999 | GMC | C1500 | Sierra SL
1988-1999 | GMC | C1500 | Sierra SLE
1994-1999 | GMC | C1500 | Sierra SLT
1988-1993 | GMC | C1500 | Sierra SLX

REVIEWS

DL

Rebuilt the HD Posi rear on my '01 Silverado with this kit and it was flawless. Bearings were solid, everything fit perfectly, and it shipped fast. Truck feels tight again!

Derek L.

Amarillo, TX

★★★★★

SM

This overhaul kit had everything I needed for my GM 8.5 locker rebuild. Bearings were top-notch, install went smooth, and it fixed the gear noise. Highly recommend!

Shawn M.

Billings, MT

★★★★★