Buy 2009 Volkswagen Routan 3.8L V6 A/T SE Mini Passenger Van Engine Coolant Reservoir Cap. 3.6 LITER. 3 LITER, EXPANSION - OEM Volkswagen Part # 7B0121323A (7B0-121-323-A, 7B0121323, 7B0121323B)

Engine Coolant Reservoir Cap.
A cover that prevents foreign debris from entering the container.

Engine Coolant Reservoir Cap

Fits Routan

3.6 LITER. 3.8 LITER. 4.0 LITER. EXPANSION TANK CAP; Routan.
Engine Coolant Expansion Tank - Repair or Replace
A failed expansion tank can cause the cooling system in your 2009 Volkswagen Routan to leak antifreeze, or it can cause your engine to overheat. If you're losing coolant, contact our service department to avoid engine damage.