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

A-Premium's replacement expansion reservoir tank with cap provides a direct-fit coolant overflow solution for Chevrolet HHR models, restoring coolant containment and pressure control.

This replacement coolant expansion reservoir from A-Premium is a ready-to-install unit engineered for Chevrolet HHR 2006–2011 with L4 2.0L, 2.2L, and 2.4L engines. Molded from heat-resistant PA plastic and supplied with a matching cap, the tank replaces the original reservoir to maintain proper coolant circulation, reduce contamination risk, and support the engine's thermal management system. It ships new, pre-tested, and includes a one-year unlimited-mileage warranty from A-Premium.

What vehicles does this reservoir fit?

This tank is manufactured to fit specific Chevrolet HHR model years and engine types as a direct replacement. Confirm fitment by selecting your vehicle's Year/Make/Model before purchase to ensure compatibility with your OEM mounting points and hoses.

• Chevrolet HHR 2008–2010 L4 2.0L
• Chevrolet HHR 2006–2011 L4 2.2L
• Chevrolet HHR 2006–2011 L4 2.4L
• Reference number: 15940309 for cross-checking

How is the A-Premium tank constructed and why does that matter?

The reservoir is made from PA (polyamide) plastic chosen for its thermal stability and resistance to vibration. These properties help the tank withstand under-hood heat cycles and mechanical stress, lowering the chance of leaks or deformation over time.

• Material: durable PA plastic for heat and vibration resistance
• Color: white reservoir body with a black cap for easy visual coolant checks
• Includes one cap to match pressure and sealing requirements
• Designed as a direct replacement to align with OEM mounting points

What performance and maintenance benefits can I expect?

Replacing a worn or cracked expansion tank helps preserve coolant quality and system pressure, which supports consistent engine temperature control. While not a fix for underlying cooling-system failures, a sound reservoir reduces the risk of coolant loss and helps the heater core operate as intended.

• Helps prevent coolant leakage and contamination
• Supports steady pressure to improve heater and cooling performance
• Reduces risk of air intrusion that can cause hot spots in the engine
• Restores proper coolant sight-level monitoring for routine checks

How easy is installation and what’s included?

Installation is straightforward for anyone familiar with basic cooling-system service: drain a small amount of coolant if needed, disconnect hoses, unbolt the old tank, and swap in the new unit. The tank ships complete with a cap and is intended as a direct-fit replacement to minimize modification.

• Contents: one A-Premium expansion tank and one matching cap
• Installation position: front of engine bay, replaces OEM tank
• Requires standard hand tools and basic coolant handling
• Refer to vehicle service manual for torque specs and coolant refill procedure

Who is this for?

This A-Premium expansion reservoir is aimed at Chevrolet HHR owners and independent mechanics who need a dependable, OEM-style replacement tank. It's suitable for drivers addressing visible cracks, leaks, or aging plastic in the original reservoir, and for anyone performing cooling-system maintenance who wants a cost-effective, warranty-backed replacement part made to match factory fitment and function.