Genuine Pontiac G5 Coolant Reservoir

The Pontiac G5 Coolant Reservoir performs the functions of an overflow and recovery tank to keep coolant levels in your engine stable and air out of the engine's cooling passages. The Coolant Reservoir located beside the radiator receives heated fluid owing to pressure rise and returns it back when temperatures drop, which prevents the antifreeze from spilling and secures the metal parts from rusting. The G5 production years feature two styles that are characteristic of the small Pontiac cars of that era. The non-pressurized overflow variety has the pressure cap on the radiator, so the G5 Coolant Reservoir, which has only a simple plastic lid, merely handles excess liquid under atmospheric pressure. When the engine cools, a vacuum inside the radiator draws coolant back through a siphon tube. The metal rated cap of the pressurized expansion style is mounted directly on the tank, which in effect makes the Coolant Reservoir part of the sealed system. This style calls for thicker reinforced plastic. Since this tank sits higher than the radiator, it allows air to vent safely rather than liquid when coolant expands, reducing aeration and saving on coolant, providing Pontiac owners consistent temperature control with less environmental impact and ensuring the Coolant Reservoir functions effectively.

Each OEM Pontiac G5 Coolant Reservoir we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.