MLS gaskets are the automotive industry’s preferred method of sealing the cylinder head and engine block. Today approximately 80% of new engines are designed with an MLS gaskets as standard equipment. The surfacing needs of today’s engines are as complex as the engines themselves.
Multi-valve aluminum cylinder heads on cast iron blocks are a tough combination to seal because of the difference in expansion rates between the two metals. The MLS head gaskets for the 3RZ are a 97 mm bore and available in either 0.040″ or 0.051″ (1.0 or 1.3 mm) thickness.