2011-2018 Powerstroke 6.7L 4" Cat & DPF Race Pipe No Muffler (421014)2011 2018 Powerstroke 6. 7L 4" Cat & DPF Race Pipe No Muffler (421014) 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!

The primary benefits of this kit are significantly increased fuel flow "through" the heads

Our drop in low pressure turbo all by itself has outperformed every other 59/75 set we have tested

boosting valve lift

Designed as an OEM replacement piston

5-2005 Duramax LLY Dynomite Diesel Brand New Injector 150% Over (DDPNLLY-300)

75MM) offer reduce compression for your modified 2011-2016 GM 6

185” bore)

The stainless steel pinion shaft is externally splined to mate with the larger diameter

7L HEMI engines

500 RPM: Guarantee safe and efficient valvetrain function by combining these retainers with our #110 springs

Can be used in naturally aspirated and turbo diesel engines

2003-2004 Powerstroke 6