The Polini water pump is made of stainless steel has been specially adapted to meet the needs of high-speed racing engines and has been drive gear weight optimized. This pump allows the removal of the oil pump on engines where there is a standard lubrication system. Everything is simple - no need for tinkering. Delivery also includes a bung for the electric starter. All in all an absolute must-have product when building high-end Piaggio engines.