GM Radiator Surge Tank
Genuine GM · Part #84630072 · Engine / Cooling
Genuine GM radiator coolant surge (expansion) tank that holds engine coolant and helps maintain operating temperature.
- Part number
- 84630072
- Fits
- Chevrolet Silverado / GMC Sierra 2500 HD & 3500 HD, 6.6L gas, 2020–2025; radiator coolant surge tank.
- AutoNation price
- $52.83 (as of 2026-07-12)
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Before you order
- Confirm it fits with your VIN before buying.
Details on this page were taken from the live AutoNation Parts listing (https://www.autonationparts.com/parts/gm-radiator-surge-tank-84630072) on 2026-07-12. Prices and availability can change — confirm on the retailer’s page before purchase. Vehicle fitment was cross-checked against PartsGeek(https://www.partsgeek.com/ss/?i=1&ssq=84630072).