Specifications:
Fits: GM 8.5” & 8.6” Ring Gear Differentials
Bolt Pattern: 10 Bolt
Material: High Grade Die Cast Aluminum
Finish: Black (Powder Coated)
Bolts Size: 5/16”-18 x 1”
Drain Plug: 1/2" NPT
Extra Capacity
Large Vertical Fins (Great for heat dissipation)
Machined Gasket Flange for a Perfect Seal
Kit Includes Gasket and Mounting Hardware

Important Notes:
No fill in hole in cover
Will NOT work for 2007 and newer 8.6" differentials that require a fill in hole in the cover, these require M8x1.25 Metric bolts.
The Stabilizer bar and sway bar may interfere and not clear on some of the models below… Especially 2005 Chevy Tahoe.
This cover will usually not fit front truck differentials,
Please compare to your existing cover before ordering.

OEM Part Number

HRCGM85BK
F522-DC8586-M7

Fit For the Following Models

1964-1995 Chevy / GM Intermediates (all A-B-C-G-K-0 Axles)
1964-1987 Chevy / GMC 1/2 Ton 2WD / 4WD Rear ( Will Not Fit 64-70 Trucks with Leaf Springs)
1988-2002 Chevy/GMC 1500 2WD and 4WD 1/2 ton trucks (rear)
1988-1992 2WD and 4WD Blazers and Jimmys (rear)
1988-1999 2WD and 4WD Suburbans 1/2 ton (rear)
1994-1999 2WD and 4WD Tahoes and Yukons (rear)
1999 Sierra 1500 1/2 Ton 2WD / 4WD with 8.5 R.G Rear
1988-1999 Silverado 1500 1/2 Ton 2WD / 4WD with 8.5 R.G Rear
1982-1992 Camaro Z28 and Iroc with 8.5" ring gear
1993-2002 Camaro V8 (will not fit heavy duty)
1984-1987 Buick Grand Nationals
1993-2002 Firebirds with V8 engines
1983-1987 Monte Carlo SS
1983-1987 Olds 442 with 8.5" ring gear

BUICK APOLLO 1973-1975
BUICK ELECTRA 1971-1989
BUICK REGAL 1973-1987
BUICK RIVIERA 1975-1978
BUICK SKYLARK 1964-1979
BUICK WILDCAT 1964-1970
CADILLAC ESCALADE 1999-2013
CHEVROLET BEL AIR 1964-1975
CHEVROLET BISCAYNE 1964-1972
CHEVROLET BLAZER 1987-2005
CHEVROLET C10 PICKUP 1979-1986
CHEVROLET C1500 PICKUP 1988-1999
CHEVROLET C2500 PICKUP 1989-2000
CHEVROLET CAMARO 1967-1981
CHEVROLET CAPRICE 1966-1996
CHEVROLET CHEVELLE 1964-1973
CHEVROLET CHEVY II 1964-1968
CHEVROLET EL CAMINO 1964-1976
CHEVROLET EXPRESS 1500 1996-2014
CHEVROLET G10 1979-1995
CHEVROLET G20 1975-1995
CHEVROLET IMPALA 1964-1996
CHEVROLET K10 PICKUP 1979-1986
CHEVROLET K1500 PICKUP 1988-1999
CHEVROLET K5 BLAZER 1979-1986
CHEVROLET MALIBU 1964-1983
CHEVROLET MONTE CARLO 1970-1978
CHEVROLET NOVA 1969-1979
CHEVROLET S10 BLAZER 1994
CHEVROLET S10 PICKUP 1994-2004
CHEVROLET SILVERADO 1500 1999-2008
CHEVROLET SUBURBAN 2012-2013
CHEVROLET TAHOE 1995-2015
GMC C1500 PICKUP 1979-1999
GMC C2500 PICKUP 1997-2000
GMC G1500 1979-1995
GMC G25 1978
GMC G2500 1979-1995
GMC JIMMY 1994-2005
GMC K1500 PICKUP 1979-1999
GMC SAVANA 1500 1996-2013
GMC SAVANA 2500 1996-1998
GMC SIERRA 2500 2011-2013
GMC SIERRA 3500 2011-2013
GMC SONOMA 1994-2004
GMC TYPHOON 1992-1993
GMC YUKON 1992-1999
GMC YUKON XL 1500 2000-2013
OLDSMOBILE CUTLASS 1970-1977
OLDSMOBILE OMEGA 1973-1979
PONTIAC BONNEVILLE 1970-1986
PONTIAC CATALINA 1970-1981
PONTIAC FIREBIRD 1969-1981
PONTIAC GRAND PRIX 1971-1987
PONTIAC GTO 1970-1973
PONTIAC LEMANS 1971-1981
PONTIAC PHOENIX 1978-1979
PONTIAC TEMPEST 1964-1970
PONTIAC VENTURA 1971-1977