Materials: Our engine block heaters are made of high quality brass and rubber materials to exceptional durability and . The heater assembly is made of high quality brass to high temperature resistance without deformation. It also has excellent wear resistance, scratch resistance and deformation resistance Perfectly Suitable for Models: The engine block immersion heater fit for for Ram 1500 2500 3500 4500 5500, fit for Ram 1500 2500 3500 4500 5500 2011 2012 2013 2014 2015 2016 2017 2018 Replace Part Number: 5003619AB; 30601007 Fast Warm-up: By heating the engine before starting the vehicle, our engine block heater assembly significantly reduces wear and consumption during -up. This not only improves the overall performance of the engine, but also minimizes the risk of engine damage due to "cold starts" and idling. With our products, you can enjoy a faster and smoother engine warm-up process Professional Wire Harness: The heater assembly includes a professional wire harness that offers low eccentric resistance and ensures stable performance. It is designed to be highly to wear and deformation, providing consistent and reliable heating capabilities. Additionally, this wire harness features excellent electrical conductivity, ensuring optimal efficiency and functionality Color: Black Material: Metal+ABS Package Contents: 1x Engine Block Heater Assembly Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.