Cometic Gaskets Dodge 420A Head Gasket 420A DOHC 16V

Cometic Multi-Layer Steel MLS Gaskets consist of three layers of stainless steel. Viton-coated outer layers form a superior seal with excellent rebound characteristics and corrosion resistance. MLS head gaskets reduce bore distortion and withstand extreme cylinder pressures. Sold individually.

Cometic head gaskets go on dry because they are coated with a sealant. Each MLS head gasket is coated with a .001" thick viton rubber that is bonded to the outer stainless steel layers. Adding an additional sealer can hinder the performance of an MLS head gasket.

Gaskets are not designed to be used on engines with O-rings or receiver grooves. A surface finish of 50 RA (roughness average) or finer is recommended for proper gasket seal. Always refer to the manufacturer of the fastener to determine accurate torque values.