Dorman Heavy Duty Pressurized Coolant Reservoir

The Dorman Heavy Duty Pressurized Coolant Reservoir line offers replacement engine coolant reservoirs, also called coolant expansion tanks or overflow tanks, for heavy duty trucks and commercial vehicles. Each reservoir is engineered and manufactured to match the fit and function of the original part. It holds coolant as it expands and contracts, and it helps keep the cooling system pressurized.

Key Features:

• Pressurized design: keeps the cooling system at the correct pressure during operation.
• Built to last: made from quality materials intended to withstand underhood heat and engine vibration.
• Application-specific: each reservoir is made to directly replace the original part on specific heavy duty applications.
• Convenient components: many applications include a spring-loaded twist-style pressure cap. Some also include items such as mounting brackets or a level sensor, depending on the application.
• Failure-resistant improvements: some designs use updated materials or construction to remove known failure points in the original equipment.

A cracked or leaking reservoir can lead to coolant loss, low coolant warnings and engine overheating. Replacing it with a Dorman HD Solutions reservoir restores reliable cooling system performance and helps keep heavy duty equipment on the road.