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The Cometic Revolution head and base MLS kit for 4 3/8-inch (4.390" actual) applications includes a .040-inch MLS head and a .020-inch combustion seal. The MLS construction uses multiple embossed layers with AMP coating and uncoated stainless steel shim material for dependable sealing. This design requires less clamp load, helps conform load distribution and reduces bore distortion in demanding top-end rebuilds.
Cometic Revolution 4 3/8in Head & Base 040inMls / 020Rc 4.390inActual
