The Secondary Air Injection Pump is an emissions control device used to heat the catalytic converter to optimal performance temperature. Dorman's unit is a direct replacement which has been thoroughly tested for fit, function, & endurance. Many states require the Secondary Air System to function properly to pass inspection. All Dorman products are engineered in the United States and backed by 100 years of automotive aftermarket experience. Our solutions are thoroughly tested and inspected, and if you experience any difficulty installing or using our parts, we have a dedicated technical support team of ASE Blue Seal certified professionals ready to help. To learn more about our quality and innovation, visit DormanProducts.com.