How to find the right Automotive Replacement Transmission Oil Pan Gaskets AI guide

What the AI looks for in Automotive Replacement Transmission Oil Pan Gaskets

Pan fitment by transmission model

Match the gasket to the transmission code and the bolt count or pan shape. Aftermarket deep pans may need their own gasket. Different pans for the same transmission can have different bolt patterns, and an aftermarket deep pan may not match the stock gasket.

Reusable molded vs single-use gasket

Reuse a factory molded or steel-core gasket only if the OEM designates it reusable and it is not cut, flattened or hardened. Replace cork and cork-rubber every time. Many modern transmissions ship with a reusable molded gasket, while compressible types lose their seal after one torque cycle.

Buy with the filter

Prefer a filter-and-gasket kit that includes the filter neck O-ring or seal for your transmission. The old filter seal often stays stuck in the bore and leaks or sucks air if it is not replaced.

Check for a sealant-only pan

Confirm whether your pan uses a gasket at all. Some factory pans are sealed only with a bead of RTV. Installing a gasket on a pan designed for sealant can leak, and the reverse can let sealant enter the fluid circuit.

Flange straightness and torque

Flatten dimpled bolt holes on stamped steel pans, then torque in a cross pattern to factory spec with an inch-pound wrench. Overtorqued bolts on stamped pans cause most repeat pan-gasket leaks.