This oil filter adapter kit replaces the factory GM (General Motors) oil filter adapter and is manufactured from high grade aluminum. Required for Chevrolet crate engines that does not include an oil filter adapter. Replaces oil filter adapter's damaged when removing engines to be overhauled. Oil filtered adapter includes filter bypass valve. Uses the following Chevrolet oil filters - AC Delco PF-25 or PF35, Fram PH5 (tall) or PH30, and WIX 51069. Includes mounting bolts.