The Bosch 5589WS Engine Air Filter is engineered to provide superior protection for your engine by ensuring only clean air enters the intake system. Designed with a high number of pleats and high-velocity cellulose cured media, this filter offers a filtering efficiency of up to 99.5%, effectively capturing even the smallest particles that can cause engine wear. The imported polyurethane foam seal enhances elasticity and sealing performance, safeguarding against water and heat, and preventing any loss of filter surface area. This design not only protects critical engine components but also optimizes airflow, contributing to improved engine performance and fuel efficiency. The filter's high capacity media allows for maximum dust holding capability, ensuring long-lasting protection and reducing the frequency of replacements. Compatible with various Buick, Chevrolet, GMC, and Saturn models from 2007 to 2019, the Bosch 5589WS Engine Air Filter is a reliable choice for maintaining engine health and performance.