A-Premium Radiator Coolant Expansion Reservoir for Chevrolet HHR 2006–2011 with Cap — White PA Plastic, Direct-Fit

An A-Premium engine radiator coolant expansion reservoir overflow tank with cap that replaces the original coolant reservoir on compatible Chevrolet HHR models to restore proper coolant recovery and system pressure control.

This replacement expansion reservoir is molded from heat- and vibration-resistant PA plastic and designed as a direct-fit swap for Chevrolet HHR 2006–2011 L4 2.0L, 2.2L, and 2.4L engines. It arrives new, in white and black trim, and includes the matching cap so you get a complete unit ready for installation. A-Premium backs the part with a one-year unlimited-mileage guarantee and provides clear vehicle fitment guidance so buyers can confirm compatibility before ordering.

Will this overflow tank fit my Chevy HHR?

Yes—this tank is specified for the HHR models listed and is a direct replacement of the original reservoir. Always use the vehicle selection tool to confirm year, make, and model before purchasing to ensure correct fit and alignment with mounting points and hose connections.

• Compatible years: 2006–2011 (varies by engine size)
• Engines covered: L4 2.0L, 2.2L, 2.4L
• Direct replacement: designed to match OEM mounting and hose locations

What materials and features make this reservoir durable?

The tank is constructed from PA (polyamide) plastic chosen for its thermal stability and resistance to vibrations under hood. The material helps the reservoir withstand repeated heating cycles without cracking or deforming, and the included cap seals the system to help maintain appropriate coolant flow during thermal expansion.

• Material: PA plastic for high heat tolerance
• Color/finish: white body with black components
• Includes a matching cap to complete the assembly

How does replacing the reservoir improve cooling system performance?

A properly functioning expansion tank maintains the correct coolant recovery and headspace for thermal expansion, which supports stable cooling-system pressure. Restoring a cracked, leaking, or collapsed tank reduces the risk of air ingress and coolant loss, helping the engine’s heating and cooling circuits operate as intended.

• Prevents coolant leakage and air entry into the system
• Helps maintain correct system pressure for efficient heat transfer
• Supports consistent heater performance and reduced overheating risk

What comes in the box and what should I expect during installation?

The package includes one A-Premium expansion reservoir tank plus the cap. Installation is a straightforward bolt-and-hose replacement when matching the correct fitment; typical steps include draining coolant to safe level, disconnecting hoses, swapping the tank, reconnecting hoses, and refilling the system while checking for leaks.

• Package contents: expansion tank and cap
• Installation position: front of engine bay; direct replacement type
• Recommended: inspect hoses and clamps during swap; top up and bleed coolant afterward

Who is this for: Owners and mechanics restoring or maintaining Chevrolet HHR vehicles with L4 2.0L, 2.2L, or 2.4L engines who need a reliable, OEM-style coolant overflow reservoir. It suits anyone replacing a damaged, aged, or leaking tank who prefers a ready-to-install unit with a matching cap and a one-year warranty for peace of mind.