Moroso 23546 Moroso Dry Sump Oil Pump Pulley - 34 ToothMoroso 23546 Moroso Dry Sump Oil Pump Pulley 34 Tooth Dry Sump Pump Pulley, Radius Tooth with 34 teeth Moroso black anodized Radius Tooth Pump Pulleys are designed to work more efficiently and take less power to drive your dry sump pump. These pulleys are made to use a 1. 00" wide drive belt and with a wide variety of sizes, most drive ratios you may need are achievable. All dry sump pulleys are made to accept a 5 8" shaft, and come with 4 set screws