C20501, C20503, 110-0884-U, 110-0883-U Onan CCK Heads PAIR Left & Right Heads used On Onan CCK Engines Used on Case 646 loaders and backhoes. We are under the impression that these are the high compression version of the CCK heads. USED
 
READ- USED PARTS HAVE NO WARRANTY. THEY ARE SOLD AS IS AND UNTESTED UNLESS NOTED OTHERWISE. THE ITEM IN THE PHOTOS IS A REPRESENTATION OF THIS USED PART NUMBER, NOT NECESSARILY THE ONE YOU ARE GOING TO RECEIVE - COLOR, FINISH, CONDITION MAY VERY. WE HAVE MANY, MANY USED PARTS, AND MANY OF THE SAME PART NUMBER. YOU WILL RECEIVE THE BEST CONDITION ONE WE HAVE IN STOCK. ALSO ANY EXTRA HARDWARE/PARTS IN PHOTOS MAY NOT BE INCLUDED IN PART NUMBER LISTED (JUST DEPENDS WHAT WE HAVE AVAILABLE AND IN STOCK AT TIME OF ORDER) ALL THAT SAID WE TAKE PRIDE IN EVERYTHING WE SELL NEW AND USED, WE TRY TO STEAM CLEAN AND DEGREASE ALL PARTS BEFORE SHIPMENT AND OFTEN QUICK PAINT TOO. IF TIME PERMITS. THIS IS NOT GUARANTEED, BUT WE TRY! ANY QUESTIONS OR CONCERNS PLEASE REACH OUT TO US.