BT 5331B – Aluminum Komatsu D39PX-21A Crawler Dozer Radiator

The BT 5331B all aluminum, heavy duty radiator is an exact fit, OEM replacement for Komatsu D39PX-21A and D39EX-21A crawler dozers. Manufactured in the USA using controlled atmosphere brazing, the epoxy-free core is built using our most durable heat exchanger design that is capable of withstanding tremendous heat and pressure. Solid, extruded tubes are brazed together as one unit without the use of header plates, thereby eliminating thousands of potential failure points. The core measures 32.25 inches from tank to tank, 22.64 inches from side to side, and 5.50 inches thick. Thick wall, U-channel tanks are TIG welded to the core to ensure the strongest possible bond and have a 1.50 inch inlet (30° angled up) and a 2.00 inch outlet (130° angled down). Each unit is individually tested prior to shipping and guaranteed to be 100% leak free.