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2005-2010 Mustang Coolant Expansion Tank by Dorman

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Details   |   Reviews
2005-2010 Mustang Coolant Expansion Tank

Eliminate coolant leaks while improving the underhood appearance of your 2005-2010 Mustang with this Dorman coolant expansion tank!

Item #LRS-8080L
MPN# 603-051

Everyday Low Price: $69.99

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 This item is returnable. Details

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  • Catches Coolant Overflow From Radiator
  • Restores Under Hood Appearance
  • Eliminates Coolant Leaks
  • Factory Fit & Finish


  • Durable Plastic Construction
  • Factory Style Threaded Cap
  • Proper Hose Connections
  • Correct Fill Range Text

 What's in the Box

  • (1) Coolant Expansion Tank
  • (1) Threaded Cap

Coolant Expansion Tank
Repair the cooling system in your 2005-2010 Mustang with this direct replacement Dorman coolant expansion tank. After years of service and numerous heat cycles, the factory plastic coolant expansion tank tends to weaken, become brittle, and crack causing troublesome leaks under the hood of your S197. Dorman's coolant expansion tank is made of a durable plastic construction that matches the factory tank and has molded fill level markings to ensure topping off your coolant is a simple task. Bolting up to the existing factory mounting points on your radiator support this expansion tank requires no modifications to install. Featuring a brand-new radiator cap to completely seal the coolant system. Dorman's coolant expansion tank is the perfect choice for restoring the engine bay of your 2005-2010 Mustang while eliminating irritating cooling system leaks.

What Does An Expansion Tank Do?
An expansion tank connects to your lower radiator hose in order to catch extra coolant or air that is in the system once the engine has reached operating temperature. The coolant expansion tank is also known as a coolant overflow tank or engine coolant de-gas bottle. The expanding coolant pours over into the expansion tank and then siphons back into the cooling system when temperatures and pressures decrease. This helps keep the radiator full at all times and eliminates any air in the cooling system, allowing your radiator to be more effective.

Dorman Warranty - Click Here

  • Ford Mustang - 2005, 2006, 2007, 2008, 2009, 2010
Fitment Notice
  • Fits 2005-2010 Mustang GT/V6 or Bullitt
  • Fits 2007-2010 Mustang GT500

California Residents:
Prop 65 Warning SignWARNING: Cancer and Reproductive Harm- www.P65Warnings.ca.gov

About This Brand

Dorman - Never stop driving solutions

People's lives and livelihoods depend upon cars and trucks. Dorman gives people greater freedom to fix these vehicles by constantly developing new repair solutions that put owners and installers first.

Since 1918, they have been the automotive aftermarket’s pioneering problem solvers. They have released thousands of parts and components that people could once only buy from original equipment manufacturers. By always innovating, they have led the way in growing the aftermarket, providing more opportunity to individuals and businesses who depend on automotive maintenance. That’s why their catalog includes more than 80,000 products and grows every year.

What makes us distinct from other aftermarket companies is their customer-first mindset. Everything they do is centered around providing customer value, both in the quality of our products, and the creativity of solutions. Their engineers and designers go out of their way to save repair technicians time, and save vehicle owners money.

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