Ensuring Expertise Built In , the OTR Radiator sustains the proper coolant fluid level for your heavy duty truck's engine. Symptoms of a bad radiator include a layer of significant scaling within the radiator's internal passageways and clogged radiator tubes from debris in the coolant (such as metal shavings). Gain a better-than-OEM replacement design that improves supply of airflow, coolant flow, and stagnation recovery for the heating system. This is possible thanks to the OTR re-engineering process which consists of virtual testing of failed units to reveal issues and improve upon the original design. As a result, this high-quality, reliable heavy duty radiator replacement is built to tolerate large amounts of stress and heat over time for optimal performance. OTR heavy duty parts offer the same form, fit, and function as OE. With comprehensive research, independent testing, and continuous product development, OTR heavy duty parts are sure to keep you and your truck safely on the road. In addition to providing the highest quality of heavy duty truck and trailer parts, you can rely on OTR warranties to be comparable or better than OE and top brands. FleetPride is your First Click in Heavy Duty .