625-4376 This kit replaces the O-Rings on Xtreme Series Crossovers.
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410-1506 This hose is a replacement hose for the one included in the 620-300100 Crossover Kit. 9" overall length on the long run, 4" overall length on the short run
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620-300101 Replacement O-Rings for later model 620-300100 crossover kits.
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620-04112 Small Block & Big Block Chevy Thermostat Housing/Water Outlet Gasket
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620-05112 Big Block Chevy Crossover Gasket - Sold in Pairs
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620-05114 Small Block Chevy Crossover Gasket (pair)
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