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Along with a new water pump, you may also need a water pump gasket and some sealer to repair your overheating car or truck.



What is a Water Pump Gasket?

Wherever two metal surfaces meet up and need to make a tight seal, you’ll often find a gasket in between. The water pump is no exception, as requires a gasket and sealing to function properly. Without a gasket to create a tight seal, the water pump leaks coolant from its engine mating surfaces.

How do Water Pump Gaskets Work?

As the gasket compresses, parts of the gasket expand out to take up space on metal parts that must fit together and stay leak free for tens or even hundreds of thousands of miles. Gaskets work by making an air and fluid tight seal between two parts that fit together, like the water pump housing and the front of the engine.

How are Water Pump Gaskets Made?

Water pump gaskets are made of a variety of materials, including paper, gasket material (thick, oil-resistant paper), and steel-reinforced gasket material. Alternately, a gasket can be made using water pump gasket sealant, a chemical compound formulated to dry quickly and form a good seal.

Why do Water Pump Gaskets Fail?

  • Paper gaskets need to be replaced whenever the water pump is removed. If your vehicle needs a new water pump, be sure to pick up a gasket and some sealant to go with it.
  • Gaskets wear out under normal driving conditions due to oxidation and heat.

What are the Symptoms of Water Pump Gasket Failure?

  • The cooling system may fail to reach the correct pressure, causing coolant to boil. Steam may be visible through the gaps along the edges of the fender and hood.
  • The engine may overheat. Do not continue to operate your vehicle for any length of time over one minute if the engine is overheating.
  • If your vehicle leaks coolant, pop the hood and attempt to trace the leak back to its source. A failing water pump gasket may be the cause of the leak.

What are the Implications of Failure?

  • Left unchecked, a coolant leak may cause your engine to overheat and put it on the fast track to major damage. If your engine starts overheating while you’re driving, pull over and call for help.
  • Coolant leaks are hazardous to wildlife and pets.

If you find a coolant leak under your vehicle, there’s a good chance it won’t be long before it goes full blown and causes your engine to overheat. The best thing to do is to clean the leak up, then do your best to diagnose the underlying issue. If you’re not sure how to diagnose a coolant leak, give your local Pep Boys a call and schedule an appointment before the leak gets any worse.

If you have questions or concerns about water pump gaskets or any of your vehicle’s other cooling components, come into your local Pep Boys where we can answer any question, help you find any part, or perform any vehicle service you might need.