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Cloyes parts are CAD designed and manufactured using premium materials. 1970-1972 GMC K25/K2500 Suburban 6.6L V8. 1968-1969 GMC K25/K2500 Suburban 6.5L V8. A timing chain synchronizes the rotation of the crankshaft and camshaft(s), ensuring proper timing of the engine's valve events for each cylinder.





