rear brake drums


Staff member
they arent expensive new but if you must
just about any rear wheel drive GM passenger vehicle will have the 5x4.75 bolt pattern and use the 9 1/2" drums , that includes the S10 trucks with rear drums /all g-body ..cutlass , grandprix , regal, monte /f-body camaro, firebird,/ a-body caprices and the buick olds pontiac variants
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Active Member
If you prefer the aluminum drums-

Aluminum Rear Brake Drums
GM # 12255496
Look for J42 RPO Code
1983-84 Blazer/Jimmy S/T models 1980-84 Buick LeSabre and ‘85 RWD 1978-81 Buick Century 1978-87 Buick Regal 1981-85 Buick Riviera 1982-92 Chevy Camaro 1986-89 Chevy full size passenger cars 1978-81 Chevy Malibu 1978-88 Chevy Monte Carlo 1982-84 Chevy S10/S15 1980-85 Olds Delta 88 1978-82 Olds Cutlass 1980-81 Pontiac Bonneville 1983-85 Pontiac Bonneville 1986 Pontiac Parisienne 1982-92 Pontiac Firebird 1978-85 Pontiac Le Mans 1978-88 GMC Sprint/ El Camino
Easy to identify. They have 1" diameter balance weights welded to them. Usually found on GM's that have alloy wheels and no posi. 3rd gen F-bodies are your best shot. Used on B, C, D, F, and G-bodies with the 4.75 bolt pattern.