JLT Air Filter Pre Filter Fits 5x9 Inch 6x9 Inch Filters Black Fuel Delivery~Injection Pumps & Controllers your Duramax uses a dowel

your Duramax uses a dowel pin on the crankshaft to hold the balancer in place

66mm 7x7 SXE style compressor wheel with extended tip technology

debris and contamination have most likely worked their way throughout your fuel system

Maximum Performance Our cold air intake for the 2004-2005 Chevy / GMC Duramax LLY 6

(1) Fuel Return Line

JLT Air Filter Pre Filter Fits 5x9 Inch 6x9 Inch Filters Black Fuel Delivery~Injection Pumps & Controllers your Duramax uses a dowelThis prefilter specifically Fits our 5 x 9 Inch, 6 x 9 Inch Air Filters. JLT Performance pre filters are a great way to add style and protection to your JLT cold air Intake system. Custom made for us by Outerwears. Outerwears Pre filters are Designed to enhance the efficiency of any performance or exposed Air Filter. The Pre filter is constructed with a proprietary polyester mesh with uniform micron openings, treated with an hydrophobic water