Head Gasket Replacement Cost for Mitsubishi Sigma

Head Gasket(s) Replacement Estimate (National Average)

Validated estimate range for national average.

The average cost for a Head Gasket(s) Replacement is between $918 and $1310. Labor costs are estimated between $686 and $866 while parts are priced between $232 and $444. Get a personalized estimate based on your location and specific car. Estimate does not include taxes and fees.

Parts & Labor Breakdown
Labor: $686 - $866
Parts: $232 - $444
Estimate does not include taxes and fees.
Best Practices

To prevent an expensive, recurring problem, the integrity of the entire Mitsubishi Sigma's cooling system should be inspected and tested when a head gasket is replaced.

During this repair, the cylinder head(s) may need to be inspected and machined. Additional repairs may be needed after the inspection. This can add several hundred dollars to the repair and are not included in the RepairPal estimate.

Cylinder head or head gasket replacement is a large, time-consuming repair that often occurs when the engine has high mileage and/or the engine has been overheated. Due to these conditions several additional parts will be needed during the repair. These may include cooling system components (hoses, water pump, radiator, thermostat, etc.) vacuum lines, timing belt, ignition wires, and more. These will be in addition to the RepairPal estimate above.

Common Symptoms

Mitsubishi Sigma head gasket failures are often due to an overheated engine, but can also be caused by high mileage and/or age.

An early sign of a failing head gasket will be a rough running engine when you first start the vehicle, especially if it's been sitting overnight. The rough running will generally last for only a few seconds.

A leaking head gasket or cracked cylinder head will often leak engine coolant into the oil, causing a "chocolate milk" like appearance and the oil level my be higher than normal.

Failed head gaskets or damaged cylinder heads can cause engine coolant to leak into the combustion chamber, producing a white, sweet-smelling smoke from the tail pipe.

Last step before receiving your estimate:
* Estimate for all Mitsubishi Sigma model years. Get a more accurate price by entering in your year.Choose Year (1990-1990)
Select year:
  • 1990