The New Carquest 398313 Heater Core is a direct fit for 1994-2002 Dodge Ram 1500-4500 trucks, featuring a bolt-on mounting style for easy installation. Made of durable aluminum, this HVAC heater core comes with a manufacturer warranty of 30 days and is 100% leak tested for reliability. With an inlet and outlet diameter of 0.625 inches, this heater core is specifically designed for the engine compartment of these vehicles, providing quality heating performance. The Carquest brand ensures a trusted and high-performing product for your vehicle needs.