If you're looking for a robust cooling solution for heavy-duty Freightliner or Western Star trucks, the BESTfit 2-Row PTR Radiator with Frame and Bolt-On Oil Cooler (35.75 38.5 Inch) is a quality replacement designed for Freightliner Cascadia 113/125 and M2-112 models (2013-2018) as well as Western Star 5700XE (2016-2018) applications. This radiator combines a 2-row PTR core with an integrated oil cooler and a supporting frame to help maintain proper engine operating temperatures. The core measures 35.75 inches in height, 38.50 inches in width and about 2.187 inches thick, with 2.5-inch inlet and outlet connections located on the upper and lower right, and it replaces several OEM numbers including 05-31002-002 and 1A0211070002 among others when OE references and dimensions are verified before ordering. Made of plastic and aluminum, it's tested for quality and backed by a warranty against defects in workmanship and materials from the date of purchase. You can buy this radiator sold individually or as a complete kit that includes coolant hoses, constant-torque clamps and mount bushings to help with installation. Because this is an aftermarket part rather than an original equipment component, it's advisable to confirm your truck's specific fitment, core dimensions and hose connection sizes before placing an order.