Differential Mini 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.

78-1230-1 Application Notes

  • For GM 8.875" (12 Bolt)
  • 30 Spline
  • Mini Spool
  • For Open Carriers
  • Steel

Warranty

1 Year or 50,000 Miles

78-1230-1 Specifications

Differential Case Design Type GM 8.875 Car, GM 8.875 Truck
Spline Quantity 30
Taxonomy A Differential LD
Taxonomy B Differential Lockers & Spools
Taxonomy C GM 8.875 Car, GM 8.875 Truck
Taxonomy D Mini-Spools
Where to buy

Vehicle Applications

  • 1971 – 1972 Buick Centurion
  • 1965 – 1972 Buick Electra
  • 1971 – 1972 Buick Estate Wagon
  • 1970 – 1972 Buick GS
  • 1968 – 1969 Buick GS 350
  • 1968 – 1969 Buick GS 400
  • 1970 – 1972 Buick GS 455
  • 1965 – 1967 Buick Gran Sport
  • 1971 – 1972 Buick LeSabre
  • 1971 – 1972 Buick Skylark
  • 1965 – 1969 Buick Special
  • 1964 – 1972 Buick Sportwagon
  • 1965 – 1970 Chevrolet Bel Air
  • 1969 – 1974 Chevrolet Blazer
  • 1975 – 1982 Chevrolet C10
  • 1963 – 1974 Chevrolet C10 Pickup
  • 1967 – 1981 Chevrolet C10 Suburban
  • 1982 – 1986 Chevrolet C15
  • 1967 – 1972 Chevrolet Camaro
  • 1966 – 1972 Chevrolet Caprice
  • 1964 – 1973 Chevrolet Chevelle
  • 1965 – 1968 Chevrolet Chevy II
  • 1965 – 1972 Chevrolet El Camino
  • 1975 – 1981 Chevrolet G10
  • 1964 – 1974 Chevrolet G10 Van
  • 1975 – 1981 Chevrolet G20
  • 1967 – 1974 Chevrolet G20 Van
  • 1965 – 1972 Chevrolet Impala
  • 1975 – 1986 Chevrolet K10
  • 1963 – 1974 Chevrolet K10 Pickup
  • 1967 – 1981 Chevrolet K10 Suburban
  • 1975 – 1981 Chevrolet K5 Blazer
  • 1965 – 1967 Chevrolet Malibu
  • 1970 – 1972 Chevrolet Monte Carlo
  • 1969 – 1972 Chevrolet Nova
  • 1985 – 1987 Dodge Exeter
  • 1975 – 1978 GMC C15
  • 1975 – 1978 GMC C15 Suburban
  • 1967 – 1974 GMC C15/C1500 Pickup
  • 1968 – 1974 GMC C15/C1500 Suburban
  • 1979 – 1986 GMC C1500
  • 1979 – 1981 GMC C1500 Suburban
  • 1975 – 1978 GMC G15
  • 1967 – 1974 GMC G15/G1500 Van
  • 1979 – 1987 GMC G1500
  • 1975 – 1978 GMC G25
  • 1967 – 1974 GMC G25/G2500 Van
  • 1979 – 1987 GMC G2500
  • 1970 – 1981 GMC Jimmy
  • 1975 – 1978 GMC K15
  • 1975 – 1978 GMC K15 Suburban
  • 1966 – 1974 GMC K15/K1500 Pickup
  • 1967 – 1974 GMC K15/K1500 Suburban
  • 1979 – 1986 GMC K1500
  • 1979 – 1981 GMC K1500 Suburban
  • 1971 – 1972 GMC Sprint
  • 1963 – 1966 GMC Suburban
  • 1971 Oldsmobile 442
  • 1965 – 1972 Oldsmobile 98
  • 1971 – 1972 Oldsmobile Cutlass
  • 1971 – 1972 Oldsmobile Cutlass Supreme
  • 1967 – 1968 Oldsmobile Delmont 88
  • 1965 – 1972 Oldsmobile Delta 88
  • 1965 – 1972 Oldsmobile F85
  • 1965 – 1966 Oldsmobile Jetstar 88
  • 1965 Oldsmobile Jetstar I
  • 1965 – 1966 Oldsmobile Starfire
  • 1967 – 1972 Oldsmobile Vista Cruiser
  • 1965 – 1971 Pontiac Acadian
  • 1965 – 1969 Pontiac Beaumont
  • 1965 – 1972 Pontiac Bonneville
  • 1965 – 1972 Pontiac Catalina
  • 1967 – 1970 Pontiac Executive
  • 1967 – 1972 Pontiac Firebird
  • 1965 – 1972 Pontiac GTO
  • 1970 – 1972 Pontiac Grand Prix
  • 1971 – 1972 Pontiac Grand Safari
  • 1971 – 1972 Pontiac Grandville
  • 1965 – 1972 Pontiac Laurentian
  • 1965 – 1972 Pontiac LeMans
  • 1965 – 1972 Pontiac Parisienne
  • 1965 – 1970 Pontiac Strato-Chief
  • 1970 Pontiac Tempest
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov