Part Number OC-642B having (CAGE Code 84490) and FSC 2935 Engine System Cooling Components, Aircraft Prime Moving in stock with ready to ship. Get an instant quote for OC-642B Cooler Lubricating Oil Engine by Gtc. 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.