BT 1131B – Navistar International Charge Air Cooler


The BT 1131B all aluminum charge air cooler is an exact fit, OEM replacement for Navistar International Step Vans, Navistar International Truck (Chassis)s, Navistar International FedEx Step Vans and Navistar International UPS Step Vans. Manufactured in the USA using controlled atmosphere brazing, the epoxy-free core measures 24.5 inches from header to header, 29.88 inches from side to side, and 1.63 inches thick. Aluminum tanks are TIG welded to the core to provide the strongest possible bond and has a 3.5 inch inlet and outlet. Each unit is individually tested prior to shipping and guaranteed to be 100% leak free.

Core Measurements
Click for image
24.5 29.88 1.63
Additional Info

Please verify the header to header measurement (inside of header to inside of header) with the core A measurement.

Additional Details
Inlet 3.5 inch
Outlet 3.5 inch
Matching Core BT 40-1