2003-2007 Powerstroke 6.0L 4" Turbo Back Exhaust 3.5" Downpipe w/ Muffler (521009)2003 2007 Powerstroke 6. 0L 4" Turbo Back Exhaust 3. 5" Downpipe w Muffler (521009) 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 Mel's system. For powerhouse performance, Mel's delivers horsepower you can hear!

Reliable Design that maximizes clamp load and minimizes the risk of head-gasket failure

For the best seal

075 Piston With Rings (Standard - Reduced Compression) are the perfect way to reduce compression iSn your 2008-2010 Ford 6

enough fuel to support 925-1

5-2012 Cummins 6

Each stud beings by being placed vertically into special racks and precisely heat-treated

the valve lash setting

MAHLE Original® head sets give you original equipment form

The MAHLE 224-3851WR-0

Fuel passes directly through this solid block in ALL conditions

You can run these springs without valve stem seals

2007-2012 Cummins 6