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Cummins R2.8 Turbo Diesel Turn-Key Installation (JK/JKU Wrangler)

Starting At


Model Years
2007 - 2018
161 hp @ 3600 RPM
267 lb-ft @ 1500-3000 RPM
Fuel Type
NAG-1/WA580 Auto & NSG370 Manual

Since 1989 the Bruiser Conversions team has been refining the diesel conversion program for the Jeep Wrangler. With the recent release of the Cummins R2.8 Turbo Diesel engine this program has evolved to meet the ever-changing demands, and Jeeps, of our customer base. We now offer fully integrated turn-key engine conversions kits for the Jeep JK/JKU Wrangler.

2012-17 Jeep JK/JKU Wrangler:

Bruiser has engineered all the components required for installation of the Cummins R2.8 Turbo Diesel engine into the late model 2012-17 Jeep JK/JKU Wrangler. Whether your vehicle is equipped with an automatic or manual transmission, we have a conversion solution to meet your needs. Our conversion integrates the Cummins supplied PCM with the factory systems of the Jeep Wrangler, providing a fully operational instrument cluster and maintaining the OEM functions available prior to the conversion process.

Automatic Transmission Equipped 2007 - 2011 Jeep JK/JKU Wrangler Required Upgrades:

Early model JK/JKU Wranglers equipped with an automatic transmission require an upgrade from the 42RLE. Bruiser has selected the NAG-1/722.6/W5A580/WA580, the factory automatic found in the 2012-2018 Jeep JK/JKU Wrangler, for use with our Cummins R2.8 Turbo Diesel engine conversion. This compact 5-speed automatic transmission is rated at 580 ft-lb torque input capacity. It has been used in a wide range of vehicles including the Dodge Challenger, Chrysler 300 SRT8, Porsche, Mercedes-Benz Sprinter, Dodge Magnum SRT8, and the supercharged Jaguar X308. Turn-key engine conversions includes a low-mileage transmission, wiring harness and a performance tuned TCM. The transmission upgrade includes a new center console assembly and automatic transmission shifter, allowing the driver access to the late-model tap shift option and updating the OEM software to include PRNDL display functionality on the OEM instrument cluster.


Bruiser Conversions has developed these builder's parts for installation of the Cummins R2.8 Turbo Diesel Engine:

Bruiser Gateway Module for 2007-17 JK/JKU:

The Bruiser Conversions R2.8 Gateway Module is necessary to maintain factory functionality of all vehicle features and systems when performing a Cummins R2.8 Turbo Diesel engine conversion in the Jeep Wrangler. All features that were available prior to the conversion will be operational after the conversion has been completed. There are two variants of this module: Early model: 2007-11 and Late Model: 2012-17. Included parts:

• Bruiser Gateway Module

• Gateway Module Mounting Bracket

• Hardware Kit

Bruiser R2.8 Wiring Harness for 2007-17 JK/JKU:

Bruiser Conversions' wiring harness for the Cummins R2.8 Turbo Diesel engine connects the Cummins engine harness, the Bruiser Gateway Module, and Cummins supplied PCM to the Jeep Wrangler's systems and features. It has been designed to cleanly route through the engine bay and passenger compartment. The harness includes an OBD port to allow for system diagnostics of the Cummins PCM and retains the factory OBD port for communication with the OEM vehicle systems. Included with the wiring harness:

• Bruiser Conversions R2.8 Engine Integration Wiring Harness

• OBD port mounting bracket

• Engine Block Grounding Hardware Pack

• Cummins PCM Mounting Plate

• Cummins Electrical Component Mounting Hardware Pack

Engine Mount Kit for 2007-17 JK/JKU:

Bruiser Conversions has engineered self-positioning engine mounting brackets for the 2007-17 Jeep JK Wrangler. The Cummins R2.8 engine mount kit includes:

• Engine side brackets

• Frame side brackets

• Hydraulic engine mounts

• Hardware for engine mount brackets

Radiator & Intercooler Bracket Kit:

The ensure clear air flow through the intercooler and radiator, and ensure proper clearances in the core support area, Bruiser Conversions has developed brackets to position them in the correct location. The OEM radiator and core support are used for the conversion, these brackets are intended for installation of the Bruiser Conversions Intercooler Kit. The kit includes the following:

• Spacers for upper radiator mount locations

• Lower radiator brackets

• Intercooler brackets

• Radiator & Intercooler bracket hardware pack

Bruiser R2.8 Intercooler Kit for 2007-17 JK/JKU:

This intercooler has been engineered to work with Bruiser's Radiator and Intercooler bracket kit. This unit is custom built for installation with the Cummins R2.8 Turbo Diesel engine. Kit includes:

• Bruiser JK Wrangler Intercooler

• Silicone couplers

• Clamp pack

R2.8 Air Intake Parts Kit for 2007-17 JK/JKU:

The Bruiser R2.8 Air Intake Parts Kit locates the air filter behind the passenger side headlight, providing ample room for the mass air flow sensor to be installed, ensuring proper clearance between the engine and battery tray/TIPM relocation bracket (sold separately). It routes the intake to avoid all obstructions under the hood when used with the complete Bruiser Conversions R2.8 Turbo Diesel do-it-yourself engine conversion kit. The R2.8 Air Intake Parts Kit includes:

• AEM Dry Filter

• Aluminum intake tube

• PCV hose and clamps

• Silicone boots and couplers

• T-bolt clamp pack

Cooling System Hose Kit for 2007-17 JK/JKU Wrangler:

These hoses allow the installer to connect the relocated radiator to the Cummins R2.8 Turbo Diesel engine. Early models will require the Bruiser Radiator & Cooling Fan Upgrade Kit for the 2007-11 JK/JKU Wrangler. This kit includes:

• Upper Radiator Hose

• Lower Radiator Hose Assembly

• Heater hoses

• Hose clamp pack

Radiator & Cooling Fan Upgrade Kit for 2007-11 JK/JKU Wrangler:

Early model Wrangler vehicles were equipped with a lower CFM cooling fan. Bruiser Conversions has developed a system to retrofit the 2007-11 vehicles with a late model cooling fan. This kit includes:

• New Radiator

• 2012-17 JK/JKU Cooling Fan

• Bruiser Cooling Fan Module

• Cooling Fan Wiring Harness

Fuel System Modification Kit for 2007-17 JK/JKU:

The fuel system modification kit comes with the necessary components to convert your fuel system from gasoline to diesel. This is required component when installing the Cummins R2.8 Turbo Diesel engine in the JK Wrangler. Our fuel system kit includes:

• Fuel Filter Mounting Bracket

• Brass Fittings

• Rubber Fuel Hose

• Rubber Return Hose

• Clamps

• Hardware for filter mounting bracket

Battery Tray & TIPM Relocation Bracket for 2007-17 JK/JKU:

To provide the maximum amount of space under the hood of the JK Wrangler, Bruiser has developed a custom battery tray and TIPM relocation bracket. This part is used in both our Cummins R2.8 and GM Performance LS3 engine conversion kits and has a durable satin black powder coat finish. Includes:

• Battery Tray Mounting hardware

• Installation Instructions

• Solenoid & Relay Mounting Hardware

Transmission Control Module (TCM) Kit for 2007-17 JK/JKU:

Upgrading to the Cummins R2.8 Turbo Diesel engine also requires a new TCM. The Bruiser Transmission Control Module will operate the NAG-1/722.6/W5A580/WA580*** transmission after the conversion process is complete. There are two variants of this module: 2007-11 JK Wrangler and 2012-17 JK Wrangler. This is a required upgrade, so please specify what year your vehicle is when placing your order. The TCM Kit includes:

• Bruiser Transmission Control Module

• TCM Mounting Bracket

• TCM Mounting Bracket Hardware pack

• TCM wiring harness

Transmission Upgrade Kit for 2007-11 JK Wrangler:

Early JK Wrangler vehicles were equipped with the 42RLE transmission, it is not capable of handling the increased power input of the Cummins R2.8 Turbo Diesel. Bruiser Conversions uses the NAG-1/722.6/W5A580/WA580 transmission for these upgrades. It is designed to withstand a torque input up to a 500 ft-lb and has an optimal gear ratio spread for the Jeep Wrangler, it includes:

• Upgraded center console

• Transmission shifter

• Transmission wiring harness

• Low-mileage NAG-1/722.6/W5A580/WA580 transmission, with torque converter

• Transmission fill tube & fluid level indicator

• Transmission fluid cooler

• Transmission cooler lines and hoses

• Transmission cooler line mounting brackets

• New transmission filter

• OEM transmission mount

• Transmission mount relocation plate

• Transmission installation hardware

• Clamps for transmission cooler lines

Transmission Mount Relocation Plate for 2012-17 JK Wrangler:

Since the Cummins R2.8 Turbo Diesel moves the driveline toward the rear of the vehicle, this plate corrects the transmission mount location. The plate bolts to your OEM crossmember and will use the OEM transmission mount.

• Transmission Mount Relocation Plate, 2012-18 JK Wrangler

• Hardware for transmission mount relocation plate

Transmission to Cummins R2.8 Adapters for 2007-17 JK/JKU:

Available in the complete kit, or as an individual part, Bruiser Conversions has developed engine to transmission adapters for the following transmission models. Each adapter will include the hardware required for installation:

• Automatic - NAG-1/722.6/W5A580/WA580

• Manual - NSG370 (JK) 6-speed

Air Conditioning Upgrade Kit for 2007-17 JK/JKU:

The Cummins R2.8 Turbo Diesel crate engine is not equipped with the correct brackets to position the A/C compressor in the Jeep Wrangler, the stock Cummins bracket positions the compressor in such a manner that the control arm will make contact with the A/C compressor. The crate engine is not shipped with an A/C compressor. Please specify the year of your vehicle when placing your order as there are differences in the line configuration between models. This optional upgrade includes:

• A/C Compressor

• A/C Compressor Mounting Bracket

• A/C Lines

• Serpentine Belt

• Hardware & Clamps for A/C Line Installation

Power Steering Parts Kit for 2007-11:

Early model (2007-11) JK Wrangler vehicles require these parts for installation of the Cummins R2.8 Turbo Diesel engine:

• Power Steering Reservoir

• Power Steering Pressure Line

• Power Steering Return Line

• Clamps for power steering lines

• Hardware for mounting reservoir

**This conversion is intended for off-road use only**

Cummins R2.8 Turbo Diesel Crate Engine

Bruiser CANBUS System

Wiring Harness for Electrical Integration

Transmission Adapters (NAG1 of NSG370)

Custom Intercooler

Charge Air Tube & Clamps

Fuel System Modification

Engine Mount Brackets

Hydraulic Engine Mounts

Radiator & Heater Hoses

Off Road Use Only


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