K & N 57S Performance Airbox
K&N 57S Performance Airboxes are special air intakes developed by K&N, the inventor of the million-mile high-flow air filter. These air intake systems increase horsepower and acceleration by dramatically reducing air flow restriction caused by the original factory design. A K&N 57S intake system completely replaces the factory air box and air filter with upgraded high quality components. The 57S air intake assembly is large enough to house an oversized conical air filter and the entire product is backed by our Million Mile Limited Warranty.