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These kits offer a superior design that streamlines airflow so engines ingest more air for noticeable horsepower gains and improved acceleration. Washable/reusable filters have eight layers of premium cotton gauze to maximize filtration and airflow. Air boxes isolate filters from engine heat, drawing in cooler outside air to boost engine performance even more.
In this era of high-cfm gas engines and air-hungry diesels, S&B test their filters to Standard ISO 5011, which has produced exact and repeatable results. Due to the controlled test setting, performance certificates now accompany S&B filters for added assurance. Each certificate displays Restriction (flow), Efficiency (filtration), and Capacity (performance deterioration) results. S&B filters are also submitted for CARB approval; most are approved while those with the newest engineering innovations await approval. Made in U.S.A.
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