4.0L Adapter Plate. This adapter plate kit allows you to mount one or more gear driven transfer case in your 4.0L 2005-2014 Toyota Tacoma with an A750F automatic transmission. The adapter plate is CNC machined from 6061-T6 Aluminum at the Trail-Gear Headquarters. With our 4.0L Adapter Plate you can install the legendary Toyota gear driven transfer case in your trail rig.

These cases are known for their strength, reliability and configuration flexibility. With the correct adapter plate, you can put one or two transfer cases into your truck. Each case can have stock 2.28 gears or 4.70 low range gears installed. One RF1A top shift gear-drive transfer case will be needed to perform this conversion.

For dual cases, both cases need to be top shift. Also required is a 23-spline 2.28 input gear. Read the Tacoma transfer case shifter installation instructions before purchasing to see the modifications that will need to be made to the shifter console. Complete, easy to install, and durable. Included in the kit are the inner frame support brackets with shock mounts incorporated into the support tube.
Vehicle modifications required for installation:

  • Lengthening the front
  • Shortening the rear drive shafts
  • Additional floorboard hole for the second transfer case
  • Cross member replacement
  • Does not require modification to the transmission for installation

Additional Items Needed:

  • Replacement Crossmember if installing dual cases
  • Second T-Case Mount if installing dual cases
  • Crawl Box with 23-spline input gear if installing dual cases
  • 2-3 Quarts of 90W gear oil
  • Carrier Bearing Relocation Kit
  • Tacoma Transfer Case Shifter Kit


  • Warranty: 12 Month Limited Warranty
  • Sold As: Kit
  • Material: Aluminum
  • Finish: Bare
  • Color: Grey
  • Ratio: 2.28 or 4.7
  • Container Size: 4.0L
  • Engine: V6
  • Fits: 2005-2014 Toyota Tacoma

Additional information

Weight 8 lbs
Dimensions 13 × 13 × 4.5 in