Cummins R2.8 Defender kit w/ New TR4050 5 speed Transmission and LT230 adapter


Cummins 2.8 crate engine new from Cummins

New Tremec TR4050 5 speed 4×4 Transmission

QuickDraw Brand Adapter kit for engine and transfer case




Looking for a Upgraded 5 speed package for your Land Rover Defender?  Here is the Cummins R2.8 Crate engine with Tremec TR4050 and adapter kit for the factory LT230 transfer case.  The Cummins R2.8 is a great fit for the 90 and 110 platform and upgrading to the TR4050 will give the truck a stronger driveline than factory for extreme offroading.  The beauty of the TR-4050 over the NV4500 is it weight and smooth car like shifting.  This installation kit has been developed with Jagspeed Motorworks allowing the builder to reuse many factory Land Rover parts including the transfer case shifter, unmodified transmission tunnel, and parking brake.

The Quickdraw Brand Cummins R2.8 TR4050/LT230 kit allows the installation of a Tremec TR4050 transmission and Land Rover LT230 transfer case into a Land Rover Defender.  Besides the Cummins R2.8 crate engine, the kit comes with the TR4050 to LT230 adapter, mounting brackets, shifter mount and linkage, custom TR4050 shift Lever, and other hardware listed below.  Customer supplies the transfer case shifter assembly off their existing rig, the square mounting plate that bolts to the side of the LT230, and the left-hand frame bracket from a V8 Discovery (also used on any Defender with an LT85 or LT95 transmission).  Due to the added width of the TR4050, an R380 transmission cover and seatbox are required.  This is a bolt-in application, using the existing 3 triangular-pattern transmission mounting holes in the Defender Chassis.  The Shift levers fit thru the factory shift boot; as shown in photo, and use the stock R380 shift knob.

What’s included in the Cummins R2.8 Defender Kit {Cummins part number 5467046}:

  • Cummins engine assembly which is part of the Cummins R2.8 Defender kit TR4050 kit,
  • Complete front-end accessory drive,
  • Vacuum pump,
  • Remote fuel/ water separator,
  • Remote oil filter,
  • Mass air flow sensor and housing,
  • Engine wiring harness and ECM,
  • Starter,
  • Universal vehicle wiring harness,
  • Throttle pedal,
  • j1939 CAN dash display,
  • Owner’s manual,
  • Installation guide.

In Addition to the Cummins R2.8 Crate engine, Other Included Parts with the Cummins R2.8 TR4050 kit:

  • Brand new Tremec TR-4050 5 speed overdrive transmission
  • QDB bell housing adapter kit using an external slave cylinder,
  • Auto parts store clutch kit,
  • External slave cylinder,
  • HD clutch fork, pivot ball, and throw out bearing,
  • Flywheel with pilot bearing installed.
  • Jagspeed Galvanized LT230 shifter adapter with shifter brackets and linkages.
  • LT230 adapter to TR4050
  • Galvanized Transfer case mounts to frame
  • DOC flange and gasket; please specify Stainless or Mild Steel.
  • SilverSport upgraded shifter tower
  • Shifter shaft that will work with both left and right hand drive setups
  • Transfer case rubber isolators


The Cummins R2.8 is allowed in Tier 1 compliant vehicles and older with cut-off dates around 1999 for light duty trucks and 1993 for light duty cars.  So, if unsure please reach out to for verification and all purchasers will be required to provide vin number prior to shipment of parts for proof of compliance.


  • Gathering, machining, palletizing, and shipping could and normally will take upwards of 1 to 2 week once the order is placed and VIN number validated, but if needing the crate sooner, expedited freight will be an additional cost to customer. In addition, all parts included in the kit will arrive in one crate with bell housing bolted to transmission and clutch components bolted to engine.
  • Shipping to the nearest Terminal to the customer
  • In addition, customer can ship directly to business or residence, but there will be an additional fee to customer.
  • The states of California, Alaska, and Hawaii will have to pay additional freight regardless of delivery location.


  • Cummins offers a limited 2 year/2600 hour warranty on the engine crate.  Cummins INC. is the contact for all warranty issues.
  • Quick Draw Brand is a retailer for the Cummins R2.8 but is not a representative of either company nor does QDB have any affiliation with the manufacturing of those companies’ parts.

More Information:

We are available to answer any questions and always offers both Military discounts as well as check, cash, or wire discounts.

Here is a promotional video showing the toughness of the bell housings we produce. 

* Some photos showing engine and transmission combination have parts missing that will be included in the kit.

Additional information

Weight1250 lbs
Dimensions48 × 40 × 68 in

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