Head gasket designs have changed over time. Today, engineers are continuing to develop new sealing solutions and materials (such as multi-layer steel construction or expanded graphite facings) because new engine designs and updates of older engines require advanced materials and constructions. Some new gasket designs may even be applied to older engines, so the head gasket for a particular application may look different from what was used previously.

MLS head gaskets are one design becoming more common. With their thin rubber coating and multiple layers of stainless steel shims, they provide the ultimate in torque retention and have the strength needed to seal and survive on current lightweight aluminum casting designs.

Whatever the engine, with Fel-Pro®, technicians can be sure that the offering for a particular application is the best sealing solution available.

Designed specifically for the aftermarket repair environment, PermaTorque MLS gaskets feature full-hard stainless steel that maintains its shape and compensates for thermal expansion and motion between the block and head, while their strategically placed sealing beads eliminate leak paths.