Made from molded silicone over the steel shim/crush inserts it won't stick and does not absorb fuel or oil. These oil pan gaskets are one of the best investments you can make if you are servicing your motor on a regular basis with between round maintenance. Gasket has extra connecting rod clearance for the engines with the big stroke crankshaft in them.
Fits all twenty two bolt BBC Gen 4 type, Donovan, World, Dart, Merlin engine blocks and are .150" thick.