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The Cometic Revolution XL base kit for 3 3/4- and 3 13/16-inch applications includes a .014-inch base gasket and a 4-inch spigot. Intended as a direct replacement base kit, it supports reliable top-end assembly. The MLS-style design requires less clamp load, conforms load distribution across the sealing area, reduces bore distortion and removes the need for sealants or repeated re-torquing when installed correctly.
Cometic Revolution Xl 3 3/4 & 3 13/16 Base Kit, .014inBase, 4in Spigot
