Brake Drum Self Adjuster Full Car kit: 79-97 GM 9.5" drum very specific 1981 ONLY Master

very specific 1981 ONLY Master Cylinder

Bore is 1"  or 25

This is the REAR

Frame image shown to assist

Length is 58

Brake Drum Self Adjuster Full Car kit: 79-97 GM 9.5" drum very specific 1981 ONLY MasterFull kit as shown for both REAR sides all up done. Once done.. forget about it .. pretty much all in the drum is covered once shoes & correct cylinders are replaced. Fits: BUICK CENTURY 1979 1981 BUICK LESABRE 1979 1984 BUICK REGAL 1979 1983 BUICK RIVIERA 1979 1981 CHEVROLET BEL AIR 1981 CHEVROLET CAMARO 1979 1983 CHEVROLET EL CAMINO 1979 1983 CHEVROLET IMPALA 1985 CHEVROLET MALIBU 1979 1983 CHEVROLET MONTE CARLO 1979 1983 CHEVROLET NOVA 1979