METRIX heater cores are manufactured to OE specifications and provide reliable, efficient performance. METRIX heater cores are manufactured from high quality aluminum or copper and feature high-strength brazed joints to ensure a highly durable, long-lasting product. Product Features:OE-Quality - Exact FitAluminum or copper tubes, air centers and tanksIncludes the required o-rings and associated hardwareHigh strength brazed jointsDesigned and manufactured to OE specifications.Includes seals and/or O-Rings (when required)