2003-2007 Powerstroke 6.0L 4" Turbo Back Exhaust No Muffler (421025)2003 2007 Powerstroke 6. 0L 4" Turbo Back Exhaust No Muffler (421025) 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!

High-strength mounting hardware

Industrial Injection is The Leading Distributor

this kit allows for all the room you need to get your kit installed properly

The customer isn’t a mechanic

and last but certainly not least

a little quicker spool up on the turbo

provide superior resistance to heat

aiding the injection System by reduce the amount of work your factory injection System has to perform

Required Information

The factory intercooler pipes are 2

Designed for Cummins with twin turbo applications this manifold is intended to be run with the turbo flange facing up and has a wastegate on the short side which would then be facing up and is offset away from the turbine housing to give clearance to the wastegate

IMPORTANT NOTE: These kits will only fit models equipped with the OEM style 4-bolt flange off the turbo direct pipe