The Bendix SC-3 Single Check Valve, part number K101849, is an air brake reservoir check valve designed for heavy-duty truck air brake systems. The SC-3 designation identifies this as a single check valve, which allows airflow in one direction while preventing backflow to protect the integrity of individual reservoir circuits. This is a genuine Bendix part available from Pro Gear and Transmission. Not sure this is the right valve for your system? Give us a call and we can help confirm proper fitment for your application.Interchanges:BWK101849A factory handling fee of $20.00 per unit is added at checkout.FeaturesBendix SC-3 Single Check ValvePart number K101849Air brake reservoir check valve applicationSingle check valve design prevents backflow between reservoir circuitsGenuine Bendix part sold by Pro Gear and Transmission