New Crankshaft Assembly with Ball Bearings, Connecting Rods, and Pistons. For pumps that end in "AV" ONLY! Includes crankshaft, bearings, rings, conrods, and pistons. NOTE! This will not fit pump models ending in "AJ".

This compression adapter kit converts the new single-outlet air compressor pump head into 2 outlets. This will save you from having to purchase the expensive check valve for many older-style units. Simply screw this into the head of your new pump and...

Old Part Numbers: CW000800AV, 69DJAAir compressor bleeder (unloader) valve. Replace if broken, but replace the check valve if this constantly leaks after the compressor shuts off.

Old Part Numbers: AB-9053138, AB-9050373, ST070324AV, 90503731/4" MPT x 1.5" steel pipe nipple. Be sure to apply plumber's tape on the threads before installation.