Fuel Tank – GM (84878521)

Fuel Tank is a formed or cast component that surrounds or supports part of the powertrain. Corrosion and cracking at mounting points are the usual reasons for replacement.

Replace the Fuel Tank when you find a crack that weeps under pressure, or when the mounting ears have failed. Welding a casting rarely restores the original alignment.

This Fuel Tank is listed under part number 84878521, filed under Fuel Tanks & Filler Necks. If the original number is unreadable, send us the VIN and we will confirm the reference before dispatch.

The stock here is genuine GM, and this Fuel Tank keeps the original engineering number, which matters once a number has been superseded more than once.