Buy 2021 Mazda 3 2.5 S Sedan Engine Coolant Reservoir Cap. 2.5 LITER. CX-30; Expansion Tank Cap. CX-50 Tank, Expansion, BUILT - OEM Mazda Part # PAF115355 (PAF1-15-355)

Cap. Reservoir. SUB.
A cover that prevents foreign debris from entering the container. Tank. Engine Coolant. Included with: Reservoir, Reservoir assembly.

Engine Coolant Reservoir Cap

Fits 3, CX-30, CX-50

2.5 LITER. CX-30; Expansion Tank Cap. CX-50; Expansion Tank Cap. EXPANSION TANK CAP; Mazda3. JAPAN BUILT. MEXICO BUILT. W/O 2.5 LITER TURBO.
Engine Coolant Expansion Tank - Repair or Replace
A failed expansion tank can cause the cooling system in your 2021 Mazda 3 to leak antifreeze, or it can cause your engine to overheat. If you're losing coolant, contact our service department to avoid engine damage.