Oil Pan Gasket


Oil pan gaskets are made of several types of material. The most common materials used for sealing are synthetic rubber, soft plastics, fiber, and cork. In critical areas, these materials might be bonded to a metal.

Installing the Oil Pan Gasket

  • Before installing the oil pan gasket, check the flanges of a steel oil pan for warpage.
  • Use a straightedge or lay the pan, flange side down, on a flat surface with a flashlight underneath it to spot uneven edges.
Checking the flatness of an oil pan flange. Used with permission of Detroit Gasket - Copyright 1999.
  • Carefully check the flange around bolt holes. Minor distortions can be corrected with a hammer and block of wood.
  • If the flanges are too bent to be repaired in this manner, the pan should be replaced.
  • Once it has been determined that the flanges are flat, install the oil pan with a new gasket.
Oil pan gasket installation. Courtesy of American Honda Motor Co., Inc.
  • Finally, fill the engine with the proper grade oil.

Oil pan gaskets used on sheet metal oil pans are usually made up of several pieces.

Oil pan gaskets and end seals.

Rubber seals on the ends join with side gasket strips. The graphic below shows cut a pan gasket and install a new piece of gasket.

When the timing cover is removed without removing the oil pan, the front part of the old pan gasket is removed and replaced. Courtesy of Fel-Pro Incorporated.