Spectra Premium Heaters are original equipment quality at a very competitive price with 100 percentage quality assurance. Only the highest grades of materials are used in production to ensure product longevity. The fully brazed aluminum design is available for more than 95 percentage of aftermarket demand. All heater cores are 100 percentage leak tested and drop in fit for easy installation. Spectra Premium Heaters and designed for exact fit in the vehicle's original equipment heater casing.