Tank. Reservoir. Engine Coolant. Expansion.
A container that holds Engine Coolant.

Engine Coolant Reservoir

Fits Bolt EV (2017 - 2023)

Bolt. Bolt EUV. DRIVE MOTOR MODULE COOLING. Spark EV. W/EV, DRIVE MOTOR COOLING.
Engine Coolant Expansion Tank - Repair or Replace
A failed expansion tank can cause the cooling system in your Chevrolet Bolt EV to leak antifreeze, or it can cause your engine to overheat. If you're losing coolant, contact our service department to avoid engine damage.