5Pcs A9065010015 Engine Radiator Expansion Tank Cap Black For Sprinter Viano Vito Mixto 906 W639 W906 9065010015 This radiator expansion tank cap is designed to fit vehicles requiring the A9065010015 specification.It is compatible with Sprinter, Viano, Vito, and Mixto models from the 906 series including W639 and W906 chassis types.The cap helps maintain proper pressure within the cooling system, efficient of the engine's thermal management.Constructed in black finish, this set includes five replacement caps that match the dimensions and performance standards.Each unit connects securely to the expansion tank to help prevent coolant leakage and overheating under normal operating conditions.