2003-2007 Powerstroke 6.0L Aluminized 4" Cat Back Exhaust w/ Muffler (421108) 2001 - 2004 GM Exterior 9L PML Reman Long Block

9L PML Reman Long Block Crate Engine

supercharged

Socket Size: 11/16 12pt

25MM (HS4068A)

038″ valve face depth with a standard gasket

2003-2007 Powerstroke 6.0L Aluminized 4" Cat Back Exhaust w/ Muffler (421108) 2001 - 2004 GM Exterior 9L PML Reman Long Block2003 2007 Powerstroke 6. 0L Aluminized 4" Cat Back Single w Muffler (421108) Constructed out of 16 gauge aluminized steel or T409 Stainless, this exhaust system is designed to simplify installation with included clamps, preweld contour bends and improved flanges. Enjoy a noticeable boost in performance, lowered EGTs and amplified air flow with this Flo~Pro system. For powerhouse performance, Flo~Pro delivers horsepower you can hear!