Cast Iron 2-Stage Inline V-Twin Replacement Pump. Produces 10 running horsepower. Mounting patterns 12.9″ W x 9.4″ D (Depth). 4 bolting holes; 0.55 diameter per hole. Provides maximum performance and efficiency. Impressive 4 Cylinder Pump. 2 large canister style air filters. Delivers high performance & longevity. “B” (width) double v-belt….