Fuel Pump – GM (85543521)

Fuel Pump pressurises fuel for the injection system. It is cooled and lubricated by the fuel it moves, which is why running a tank low shortens its life.

Replace the Fuel Pump when pressure is below specification with good voltage at the connector, when the pump is noisy and hot, or when it fails to prime. Check the relay and the ground before condemning it.

The Fuel Pump in this listing carries part number 85543521 and sits in the Fuel Pumps & Senders category. The number stamped on the original part is the only reliable cross-reference.

Genuine GM supplied for this Fuel Pump, with the engineering number unchanged from the factory reference stamped on the original.