Engine Coolant Reservoir

Part Number: 84622147
Supersession(s): 23394082
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Tank. Assembly - Radiator Surge. Engine Coolant Reservoir. Expansion. Recovery.
A container that holds Engine Coolant.

Engine Coolant Reservoir

Fits Sierra 2500 HD, Sierra 3500 HD, Silverado

6.6 LITER DIESEL, ENGINE COOLING. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD.
Engine Coolant Expansion Tank - Repair or Replace
A failed expansion tank can cause the cooling system in your 2021 GMC Sierra 3500 HD to leak antifreeze, or it can cause your engine to overheat. If you're losing coolant, contact our service department to avoid engine damage.

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