Buy 2021 Mazda 6 Engine Coolant Reservoir Cap. 2.0 LITER. 2.2 LITER DIESEL. 2.5 LITER. 2.5 LITER NON Tank, EXPANSION, LITER - OEM Mazda Part # PE0115355B

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

Engine Coolant Reservoir Cap

Fits 3, 6, CX-5

2.0 LITER. 2.2 LITER DIESEL. 2.5 LITER. 2.5 LITER NON TURBO. EXPANSION TANK CAP; CX-5. EXPANSION TANK CAP; CX-5; w/o Turbo. EXPANSION TANK CAP; Mazda3; 2.0L; Japan Built. EXPANSION TANK CAP; Mazda3; 2.5L. EXPANSION TANK CAP; Mazda6. EXPANSION TANK CAP; Mazda6; w/o Turbo. Japan built.
Engine Coolant Expansion Tank - Repair or Replace
A failed expansion tank can cause the cooling system in your 2021 Mazda 6 to leak antifreeze, or it can cause your engine to overheat. If you're losing coolant, contact our service department to avoid engine damage.