Specification: Finish: Polished Material: High Grade Die Cast Aluminum Drain Plug: 1/2" NPT Bolt Pattern: 10 Bolts Compatibility: Replacement for 1984–1987 Grand National Replacement for 1965–1971 Camaro with B-C-G-K axles Replacement for 1982–1992 Camaro Z28 & IROC Replacement for 1993–2002 Camaro V8 (excludes heavy-duty) Replacement for 1965–1975 Chevelle Replacement for 1982–1992 Firebird Trans Am Replacement for 1993–2002 Firebird V8 (excludes heavy-duty) Replacement for 1983–1987 Monte Carlo SS Replacement for 1983–1987 Oldsmobile 442 Replacement for 1964–1987 1/2 Ton 2WD & 4WD (excludes 1964–70 leaf spring trucks) Replacement for 1988–2002 1/2 Ton 2WD & 4WD rear Replacement for 1988–1992 Full-size Blazer & Jimmy 2WD/4WD Replacement for 1999 Sierra 1500 & Silverado 1500 2WD/4WD Replacement for 1988–1999 Suburban 2500 2WD/4WD Replacement for 1994–1999 Tahoe & Yukon 2WD/4WD