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The head gasket is designed to contain engine compression, and to prevent oil, fuel and coolant from combining. It is located at the top of your internal combustion engine, between the engine block and cylinder head. The head gasket seals the area where the two pieces of your engine meet.



How Does It Work?

  • Your head gasket seals the openings between the combustion chamber, coolant passages and oil passages.This sealing process ensures maximum compression and avoids leakage of coolant and/or engine oil.

How Is It Made?

  • Made up of either composite or metal
  • Contains a few subsets in each group

How Does It Fail?

  • Engine overheating
  • Bad OEM gasket
  • OEM materials not best suited for your vehicle
  • Pre-ignition or detonation problem
  • Installation errors

What are Symptoms of Failure?

  • Engine overheating
  • Exhaust gases in the radiator
  • Engine running poorly – skipping, hesitating or lack of power
  • Coolant in the oil – engine oil will resemble chocolate milk
  • Excessive pressure in the crank case

What Are the Consequences of Failure?

  • The cooling system will build up extreme pressure and possibly blow off the radiator cap, crack the radiator tank or blow a radiator hose.

If you have questions or concerns about head gaskets or any of your vehicle’s components or fluids, 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.