The IAG Performance / JE Pro Seal Subaru MLS head gaskets were designed specifically for use with IAG's 14mm Head Stud Sets. The gaskets are manufactured from stainless steel material and feature enlarged head stud holes to clear 14mm head studs without drilling or modifying the gasket. The multi-layer design is embossed and tempered for a long service life. The gaskets include a proprietary four step coating process after embossing which features a silicone coat for improved sealing properties.

The Subaru 100mm Head Gasket for the EJ25 / EJ257 comes in a 0.039in thickness and the gaskets are sold individually. (x2) are required per long block.