Part Number 1Q-4311 having (CAGE Code 11083) and FSC 2990 Miscellaneous Engine Accessories Nonaircraft in stock with ready to ship. Get an instant quote for 1Q-4311 Heater Coolant Engine by Caterpillar Inc. 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.