Shop OEM Honda Part # 19102RV0A00 (19102-RV0-A00). Engine Coolant Reservoir Cap. 2.4 LITER, 2016-22. EXPANSION TANK CAP; ILX. EXPANSION TANK CAP; Odyssey. Engine Coolant Expansion Tank -

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

Engine Coolant Reservoir Cap

Fits ILX, Odyssey

2.4 LITER, 2016-22. EXPANSION TANK CAP; ILX. EXPANSION TANK CAP; Odyssey.
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.