Shop OEM Honda Part # 19102RN0A00 (19102-RN0-A00). Engine Coolant Reservoir Cap. ENGINE COOLING. EXPANSION TANK CAP; Pilot. EXPANSION TANK CAP; RLX. EXPANSION TANK CAP; RLX Hybrid. Engine

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

Engine Coolant Reservoir Cap

Fits Pilot, RLX

ENGINE COOLING. EXPANSION TANK CAP; Pilot. EXPANSION TANK CAP; RLX. EXPANSION TANK CAP; RLX Hybrid.
Engine Coolant Expansion Tank - Repair or Replace
A failed expansion tank can cause the cooling system in your to leak antifreeze, or it can cause your engine to overheat. If you're losing coolant, contact our service department to avoid engine damage.