Polished Aluminum Double 2 Groove Power Steering Pump Pulley For GM Chevy SBC BBC Gm Chevy Polished Aluminum Double 2 Groove Power Steering Pump Pulley SBC BBC Fits All Early - 1984 Pumps With Key Way & 5/8" Shaft Pulley Has Double Groove For V-Belt Applications 5 3/4" In Diameter Fits all water pump styles(short and long)