2011-2016 GM HD Polished Factory LML Cylinder Head (FPE-61-10004-P) rear-block-kit The K&N E-3740 replacement air

The K&N E-3740 replacement air filter is designed to increase horsepower and acceleration by reducing restriction and increasing air flow to your engine

and effectively

5 inch Gas (UPC 658848616374)

Part Number: 981-30-404-R

2011-2016 GM HD Polished Factory LML Cylinder Head (FPE-61-10004-P) rear-block-kit The K&N E-3740 replacement airThe Fleece Performance 2001 2016 Factory LML Duramax Cylinder Head is built to OEM or better standards for diesel truck owners who want a no compromise upgrade. Engineered, manufactured, and supported by Fleece the diesel performance specialists. Features New valve guides, new springs, and new valve seals Pressure and leak tested Precision ground stock valves with a 45 degree angle Multi angle valve job 1 Year Limited Parts Warranty Specifications