Richmond - 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.

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Part number: 78-7528-1

Richmond - Differential Mini Spool

Application notes:

  • For GM 7.5" (10 Bolt)
  • 28 Spline
  • For Open Differential
  • For Carriers With Equal Size Large Windows
  • Fits In GM7.5 26 Spline Open Carrier
  • Requires Aftermarket 28 Spline Axles
Where to buy

Buying Guide

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

Richmond Gear Buying Guide

Specifications

Differential Case Design Type GM 7.5, GM 7.625
Spline Quantity 28
Title Differential Mini Spool
Warranty Time 1 Year or 50,000 Miles

Vehicle Applications

  • 1973 – 1975 Buick Apollo
  • 1978 – 1981 Buick Century
  • 1991 Buick Commercial Chassis
  • 1976 – 1985 Buick Electra
  • 1977 – 1983 Buick Estate Wagon
  • 1975 – 1985 Buick LeSabre
  • 1978 – 1987 Buick Regal
  • 1977 – 1978 Buick Riviera
  • 1991 Buick Roadmaster
  • 1975 – 1980 Buick Skyhawk
  • 1976 – 1979 Buick Skylark
  • 1987 Cadillac Brougham
  • 1982 – 1984 Cadillac DeVille
  • 1982 – 1986 Cadillac Fleetwood
  • 1985 – 1987 Chevrolet Astro
  • 1982 – 1987 Chevrolet Camaro
  • 1977 – 1987 Chevrolet Caprice
  • 1976 – 1987 Chevrolet El Camino
  • 1977 – 1979 Chevrolet Impala
  • 1978 – 1983 Chevrolet Malibu
  • 1978 – 1988 Chevrolet Monte Carlo
  • 1975 – 1980 Chevrolet Monza
  • 1977 – 1979 Chevrolet Nova
  • 1982 – 1987 Chevrolet S10
  • 1983 – 1987 Chevrolet S10 Blazer
  • 1982 – 1987 GMC S15
  • 1983 – 1987 GMC S15 Jimmy
  • 1985 – 1987 GMC Safari
  • 1977 – 1984 Oldsmobile 98
  • 1977 – 1987 Oldsmobile Custom Cruiser
  • 1978 – 1981 Oldsmobile Cutlass
  • 1978 – 1984 Oldsmobile Cutlass Calais
  • 1980 – 1983 Oldsmobile Cutlass Cruiser
  • 1978 – 1980 Oldsmobile Cutlass Salon
  • 1985 – 1987 Oldsmobile Cutlass Salon
  • 1978 – 1987 Oldsmobile Cutlass Supreme
  • 1977 – 1985 Oldsmobile Delta 88
  • 1975 – 1979 Oldsmobile Omega
  • 1975 – 1979 Plymouth Poseidon
  • 1977 – 1986 Pontiac Bonneville
  • 1977 – 1981 Pontiac Catalina
  • 1982 – 1987 Pontiac Firebird
  • 1978 – 1980 Pontiac Grand Am
  • 1978 – 1980 Pontiac Grand LeMans
  • 1978 – 1987 Pontiac Grand Prix
  • 1977 – 1978 Pontiac Grand Safari
  • 1978 – 1981 Pontiac LeMans
  • 1983 – 1986 Pontiac Parisienne
  • 1978 – 1979 Pontiac Phoenix
  • 1987 – 1989 Pontiac Safari
  • 1976 – 1977 Pontiac Ventura