Richmond - Differential Spool

Richmond Spools are the lightest, strongest, and most efficient way to lock both axle shafts together. They're CAD/CAM-designed, CNC-machined from 4140 alloy-steel forgings, and heat-treated to aircraft standards.

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Part number: 81-1028-1

Richmond - Differential Spool

Application notes:

  • For GM 8.5" (10 Bolt)
  • Steel
  • 28 Spline
  • 45 Degree Pressure Angle
  • C-Clip Eliminator Required
Where to buy

Buying Guide

Search year, make and model to find applications for your vehicle.

Richmond Gear Buying Guide

Specifications

Differential Carrier Break 2.73 and Higher
Differential Case Design Type GM 8.5
Pressure Angle 45
Spline Quantity 28
Title Differential Spool
Warranty Time 1 Year or 50,000 Miles

Vehicle Applications

  • 1973 – 1975 Buick Apollo
  • 1973 – 1977 Buick Century
  • 1991 – 1996 Buick Commercial Chassis
  • 1976 – 1981 Buick Electra
  • 1985 – 1989 Buick Electra
  • 1977 – 1981 Buick Estate Wagon
  • 1973 – 1974 Buick LeSabre
  • 1977 – 1981 Buick LeSabre
  • 1985 – 1990 Buick LeSabre
  • 1973 – 1977 Buick Regal
  • 1984 – 1987 Buick Regal
  • 1977 – 1978 Buick Riviera
  • 1991 – 1996 Buick Roadmaster
  • 1971 – 1972 Buick Skylark
  • 1975 Buick Skylark
  • 1977 – 1979 Buick Skylark
  • 1994 – 1997 Chevrolet Avondale
  • 1971 – 1975 Chevrolet Bel Air
  • 1971 – 1972 Chevrolet Biscayne
  • 1987 – 1991 Chevrolet Blazer
  • 1971 – 1972 Chevrolet Brookwood
  • 1980 – 1986 Chevrolet C10
  • 1980 – 1986 Chevrolet C10 Suburban
  • 1988 – 1998 Chevrolet C1500
  • 1992 – 1996 Chevrolet C1500 Suburban
  • 1980 – 1986 Chevrolet C20 Suburban
  • 1992 – 1996 Chevrolet C2500 Suburban
  • 1971 – 1981 Chevrolet Camaro
  • 1971 – 1996 Chevrolet Caprice
  • 1970 – 1973 Chevrolet Chevelle
  • 1973 – 1976 Chevrolet El Camino
  • 1996 Chevrolet Express 1500
  • 1996 Chevrolet Express 2500
  • 1975 – 1995 Chevrolet G10
  • 1970 – 1974 Chevrolet G10 Van
  • 1975 – 1995 Chevrolet G20
  • 1970 – 1974 Chevrolet G20 Van
  • 1971 – 1985 Chevrolet Impala
  • 1994 – 1996 Chevrolet Impala
  • 1977 – 1986 Chevrolet K10
  • 1977 – 1986 Chevrolet K10 Suburban
  • 1988 – 1998 Chevrolet K1500
  • 1992 – 1996 Chevrolet K1500 Suburban
  • 1977 – 1986 Chevrolet K20
  • 1977 – 1986 Chevrolet K20 Suburban
  • 1992 – 1996 Chevrolet K2500 Suburban
  • 1977 – 1986 Chevrolet K5 Blazer
  • 1971 – 1972 Chevrolet Kingswood
  • 1970 – 1979 Chevrolet Nova
  • 1987 Chevrolet R10
  • 1987 – 1988 Chevrolet R10 Suburban
  • 1989 – 1991 Chevrolet R1500 Suburban
  • 1987 – 1988 Chevrolet R20 Suburban
  • 1989 – 1991 Chevrolet R2500 Suburban
  • 1971 – 1972 Chevrolet Townsman
  • 1987 Chevrolet V10
  • 1987 – 1988 Chevrolet V10 Suburban
  • 1989 – 1991 Chevrolet V1500 Suburban
  • 1987 Chevrolet V20
  • 1987 – 1988 Chevrolet V20 Suburban
  • 1989 – 1991 Chevrolet V2500 Suburban
  • 1980 – 1986 GMC C1500
  • 1988 – 1998 GMC C1500
  • 1980 – 1986 GMC C1500 Suburban
  • 1992 – 1996 GMC C1500 Suburban
  • 1980 – 1986 GMC C2500 Suburban
  • 1992 – 1996 GMC C2500 Suburban
  • 1998 GMC C3500
  • 1975 – 1978 GMC G15
  • 1970 – 1974 GMC G15/G1500 Van
  • 1979 – 1995 GMC G1500
  • 1975 – 1978 GMC G25
  • 1970 – 1974 GMC G25/G2500 Van
  • 1979 – 1995 GMC G2500
  • 1977 – 1991 GMC Jimmy
  • 1977 – 1978 GMC K15
  • 1977 – 1978 GMC K15 Suburban
  • 1979 – 1986 GMC K1500
  • 1988 – 1998 GMC K1500
  • 1979 – 1986 GMC K1500 Suburban
  • 1992 – 1996 GMC K1500 Suburban
  • 1977 – 1978 GMC K25
  • 1976 – 1978 GMC K25 Suburban
  • 1979 – 1986 GMC K2500
  • 1994 GMC K2500
  • 1979 – 1986 GMC K2500 Suburban
  • 1992 – 1996 GMC K2500 Suburban
  • 1987 GMC R1500
  • 1987 – 1991 GMC R1500 Suburban
  • 1987 – 1991 GMC R2500 Suburban
  • 1996 GMC Savana 1500
  • 1996 GMC Savana 2500
  • 1987 GMC V1500
  • 1987 – 1991 GMC V1500 Suburban
  • 1987 GMC V2500
  • 1987 – 1991 GMC V2500 Suburban
  • 1971 – 1984 Oldsmobile 98
  • 1971 – 1989 Oldsmobile Custom Cruiser
  • 1971 – 1977 Oldsmobile Cutlass
  • 1975 – 1977 Oldsmobile Cutlass Salon
  • 1971 – 1977 Oldsmobile Cutlass Supreme
  • 1976 Oldsmobile Cutlass Tiara
  • 1971 – 1985 Oldsmobile Delta 88
  • 1970 – 1972 Oldsmobile F85
  • 1973 – 1975 Oldsmobile Omega
  • 1977 – 1979 Oldsmobile Omega
  • 1971 – 1986 Pontiac Bonneville
  • 1971 – 1981 Pontiac Catalina
  • 1970 – 1981 Pontiac Firebird
  • 1970 – 1973 Pontiac GTO
  • 1975 – 1977 Pontiac Grand LeMans
  • 1971 – 1977 Pontiac Grand Prix
  • 1971 – 1978 Pontiac Grand Safari
  • 1971 – 1975 Pontiac Grandville
  • 1971 – 1977 Pontiac LeMans
  • 1983 – 1986 Pontiac Parisienne
  • 1977 Pontiac Phoenix
  • 1987 – 1989 Pontiac Safari
  • 1971 – 1977 Pontiac Ventura