2004-2007 Rainier Coolant Reservoir Overflow Tank

• Rainier With 4.2, 5.3 and 6.0 Liter Engine
• Coolant Overflow Tank With Cap
• Durable Plastic Construction
• Direct Bolt On
• 2004, 2005, 2006, 2007 Buick Rainier
• Replaces Dealer OEM 25870737, 15884833, 25780737
• Replacement Buick Rainier Coolant Reservoir Built To OEM Specifications

A radiator overflow tank collects the expanding coolant that is heated by the engine and recycles it back into the coolant system once it loses enough heat. The radiator overflow tank works in conjunction with the radiator cap to protect the engine and prevent coolant loss due to overflow.

• Direct replacement - this engine coolant reservoir fits and functions like original equipment for a trouble-free installation
• Complete assembly - includes reservoir and reservoir cap
• Excellent value - OE quality at a lower price
• Quality materials - built to withstand excessive heat and vibration

This replacement engine coolant reservoir is manufactured from premium plastic to withstand the stresses of under-hood heat and engine vibration. It is thoroughly tested to ensure optimum fit and performance on specific vehicle applications.

• Durability: The reservoir is made from premium plastic that can withstand the heat and vibration of your engine. This is important because the coolant reservoir is a critical part of your car's cooling system, and it needs to be able to function properly even in harsh conditions.
• Performance: The reservoir is designed to fit and function like the original equipment (OE) in your car. This means that it will install easily and work seamlessly with your existing cooling system.
• Value: The reservoir is offered at a lower price than the OE part, but it still provides the same high quality. This makes it a great option for budget-minded driver.