K&N PERFORMANCE FUEL FILTER FOR CHEVROLET SILVERADO 3500 LB7 LLY LBZ LMM LML TURBO DIESEL 6.6L V8K&N fuel filters are designed to protect the fuel system from contaminants such as rust, dirt, scale and other foreign materials. Impurities in the fuel line can clog critical parts of the engine such as injectors which can cause serious damage. These filters have high strength carbon steel housing. The high performance cellulose glass media with rolled seam exceeds the pressure requirements of the OEM equivalents. This fuel filter suits Chevrolet