Review on Dorman 621 134 Radiator Assembly Controller by Charles Lewis

This controller is great for automotive A/C systems. As a result of my tests i determined that it effectively regulates the temperature of the engine and keeps it from overheating. The assembly was easy to install and the quality of the materials was impressive. However, the only downside I experienced was that the controller can occasionally be a bit noisy .Overall, I highly recommend this product to keep your vehicle's engine cool and running efficiently..