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2007 Jeep Wrangler Rubicon JK 5.9L Cummins - The Ultimate Diesel Jeep

A 5.9l Cummins Gets Stuffed Into The New '07 Jeep Rubicon

Photography by , Petersen's 4-Wheel & Off-Road

Rollcage And Body Armor
To make sure that the Jeep (and its occupants) would not be destroyed during the Ultimate Adventure, the JK was fitted with every type of armor available. The Wrangler had just 200 miles on the odometer when it went to Twisted Customs, and the staff tore out the interior, cut off the factory rollcage and built a custom 6-point cage out of 13/4-inch steel tubing. Fab Fours supplied heavy-duty bumpers made from 3/16-inch steel and 13/4-inch tubing, providing a secure home for a Warn winch. Rock sliders from Poly Performance use 3/16-inch plate to protect the rocker panels, while AEv corner guards help the body remain intact, and an AEv vented hood keeps the Cummins running cool. Tube fender upgrades by Poison Spyder Customs give the 42-inch tires plenty of room to move. For paint, Shadow Coatings sprayed the exterior Army Green, and to protect the interior and make it easier to clean, the entire body tub was covered with Rhino Liner. Then, baja RS recliner suspension seats with bestop covers were installed up front, and a set of two low-back Rubicon suspension seats were put in the back. Sliding storage drawers from Slee Off Road, a 12-volt ARb fridge/ freezer, CO2-filled Powertanks, Mastercraft grab handles, and a rechargeable HalGuard extinguisher from H3R helped prepare the interior for the 2007 Ultimate Adventure.

The Ultimate Diesel Adventure
With so many modifications needed to build the Ultimate Diesel Jeep, you might expect parts to break on every trail, but during the entire 2,000-mile trip, the only thing that snapped was a stock Dodge front axle shaft. The Dynatrac Free-Spin kit made it easy to access the broken parts, and after a new driveshaft was grabbed from the sliding drawers, the Cummins Jeep was back on the trail in no time-with no other major problems. To learn more about the 2007 Ultimate Adventure and see additional photos of the Ultimate Diesel Jeep in action, go to

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