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The Cometic Revolution XL base kit for 3 3/4- and 3 13/16-inch applications includes a .005-inch copper base gasket and a 4-inch spigot for accurate fit. Supplied to match particular bore dimensions, the kit provides a direct replacement option for rebuilds. Its construction conforms load distribution across the sealing area, requires less clamp load and helps reduce bore distortion compared with older single-layer designs.
Cometic Revolution Xl 3 3/4 & 3 13/16 Base,.005inCopper 4in Spigot
