GM Differential Identification & Specs

GM '55-'64 1/2 Ton truck

GM '55-'64 Passenger car

GM 10.5" 14 Bolt Truck, '84-'85 Only

GM 10.5" 14 Bolt Truck, '88 & older (excluding '84-'85)

GM 10.5" 14 Bolt Truck, '89-'98

GM 10.5" 14 Bolt Truck, '99 & up

GM 11.5", 2010 & down

GM 11.5", 2011 & up

GM 12 Bolt Passenger Car

GM 12 Bolt Truck

GM 12.25" HO72 Rear, Ball Pinion Bearing for non-load bolt design

GM 12.25" HO72 Rear, Tapered Pinion Bearing for load bolt design

GM 7.2 IFS '02-'09

GM 7.2" IFS Front, '83-'97

GM 7.2" IFS Front, '98 & up

GM 7.2" IOP IFS, Front, oil pan mounted differential

GM 7.5" & 7.6" Rear, '00 & up

GM 7.5" & 7.6" Rear, '82-'92 - 26 Spline

GM 7.5" & 7.6" Rear, '82-'99 - 28 Spline

GM 7.5" Rear for Vega, Monza & Starfire only

GM 7.5" Rear, '81 & older

GM 7.6" IRS / 195mm Rear

GM 7.6IFS

GM 7.75 IRS Rear

GM 7.75" Borg Warner

GM 8.0"

GM 8.2"

GM 8.2" Rear for Buick, Oldsmobile & Pontiac

GM 8.25 IFS Front 2010 & Newer

GM 8.25" IFS Front, '98 & older

GM 8.25" IFS Front, '99-'09

GM 8.5 REAR 30 SPLINE

GM 8.5" Front - 28 Spline

GM 8.5" Front - 30 Spline

GM 8.5" Rear - 28 Spline

GM 8.5" Rear for Oldsmobile 442 & Cutlas, 28 spline

GM 8.5" Rear for Oldsmobile 442 & Cutlas, 31 spline

GM 8.6" IRS / 218mm Rear

GM 8.6" Rear, '09 & up

GM 8.6" Rear, '99-'08

GM 8.75"

GM 8.875"

GM 9.25" IFS Front, '10 & down

GM 9.25" IFS Front, '11 & up

GM 9.5" Rear, '14 & up, 12 bolt cover

GM 9.5" Rear, '79-'97, 14 bolt cover

GM 9.5" Rear, '97-'13, 14 bolt cover

GM 9.76" Rear, 2014 & Up, 12 bolt cover

GM 9.9" IRS / 250mm 2013 & UP

GM C5 & C6 Corvette

GM Cast Iron Corvette

Oldsmobile Dropout Rear, '57-'62

Oldsmobile Dropout Rear, '63-'64