Buy 2009 Mazda B4000 Cap. Radiator. Reservoir. EXPANSION TANK CAP; RX-8; From 5/13/05. Engine Cooling, EXPANSION - OEM Mazda Part # N3H115205 (N3H1-15-205)

A cover that prevents foreign debris from entering the container. Location-Reservoir. Radiator Cap. Engine Coolant. Included with: Reservoir assembly.

Radiator CapEngine Coolant Reservoir Cap

Fits RX-8

EXPANSION TANK CAP; RX-8; From 5/13/05.
Engine Coolant Expansion Tank - Repair or Replace
A failed expansion tank can cause the cooling system in your 2009 Mazda B4000 to leak antifreeze, or it can cause your engine to overheat. If you're losing coolant, contact our service department to avoid engine damage.