Part Number 6231 having (CAGE Code Z8V45) and FSC 2640 Tire Rebuilding and Tire and Tube Repair Materials in stock with ready to ship. Get an instant quote for 6231 Valve Core by Marathon Special Products Corpor. Fill the form below with your desired order quantity, targeted price and the expected order-fulfilment date. Our dedicated account manager will get back to you within 15 minutes.