The Magneti Marelli Water Pump (Piaggio P/N 846734 / 1A0128565 / 877528, MPN MPA0058) is the OEM-equivalent coolant pump for the Vespa GTS 300 from 2008 through 2024. Manufactured to original Piaggio specifications by Magneti Marelli, the factory-authorized supplier, this unit maintains proper coolant circulation through the liquid-cooled 300cc engine, preventing overheating and ensuring consistent operating temperatures across all riding conditions. It is a direct-fit replacement requiring no modifications.
