07-18 Cummins 6.7 Fleece Coolant Bypass KitIncreased Coolant Flow, Decreased Coolant Temperatures See Video at bottom for a youtube install video The rear cylinders on the 5. 9 6. 7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure.

It addresses the restrictive factory intake manifold and the air starvation of the front and rear cylinders

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long lasting 304 stainless steel down pipe

Cannot be used on 2013-up with Rear Coil Spring (RCS) - use 1061825-RCS and 1061826

with the capability to provide fuel at flows and pressures beyond the maximum requirements of the engine

6L Stealth Performance Module exclusively for Chevy/GMC Duramax years 2011-2016

60-85rwhp gain on an otherwise maxed out EFIlive Tune

5 plies of DuPont Nomex / Aramid fiber (no inferior Polyester is used)

Front Cover fits AA 14-9

1994-2010 Ford F-250/F-350/F-450/F-550 Super Duty V8-7

11-16 Chevy GMC 2500 3500 Duramax

Allison transmissions