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SKU: 26-TR4050
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TREMEC® TR-4050 Heavy Duty 5 speed O/D transmission for 4WD applications. Features:

  • Ratios: 6.16, 3.11, 1.71, 1.00, .76 Rev. 6.03
  • 600 LB-FT @ 15,000 Lbs GCVW
  • Right side PTO - 6 Bolt
  • Chrysler/Jeep Transfer case bolt circle with 23 spline output shaft
  • Oil Capacity - 3.67 QT
  • High-contact constant mesh helical gears for maximum strength
  • Die-cast aluminum alloy housing saves weight while offering considerable rigidity
  • Standard right-hand six-bolt PTO offers ability to run hydraulic pumps
  • The multiple rail internal shifter provides excellent shift feel and performance
  • Tapered bearing on input, main and counter shafts provide excellent internal stability
  • Needle bearings under gears reduce friction and noise output
  • All forward gears and reverse gear synchronized
  • Advanced synchronizer technology promotes smoother shifting and reduced shift effort
  • Counter shaft mounted 5th gear synchronizer improves NVH in overdrive
  • Weighs 164 lbs
  • 19.5" overall length
  • .590" Pilot diameter
  • 5.125" Index retainer diameter
  • 1.125" Input shaft diameter, 10 spline, 6.5" length

Bellhousing Adapters:

712576 - Full Bellhousing to GM V8 engine (Use 26-TH4050)

712568 - Full Bellhousing to AMC Straight 6 and V8 (Use 26-TH4050)


Transfer Case Adapters:

Dana 300 - The TR-4050 has positive shaft stickout from the rear. You can trim the shaft or use 50-8603 which will also allow some clocking options.

New Process Jeep Transfer Cases - The Jeep NP transfer case are 23 spline inputs and should bolt directly to the

TR-4050. We recommend our transfer case cable shifter upgrade kit when coupling the NP231/ NP241 to the

TR-4050. 715543.

Atlas Transfer Case - The Atlas will bolt directly to the rear of the TR-4050, The Atlas just needs the 23 spline input.

GM NP205 - The Gm NP205 has three input options on the transfer case, 10, 27, & 32. We can currently bolt to the 10 spline with a coupler 52-9523 and adapter 50-2800. The output shaft on the TR-4050 will need to be trimmed. The 27 spline and 32 spline currently do not have any options.

Dodge NP205 - The Dodge NP205 can be coupled using kit 50-2800. The Dodge NP205 needs to be the 23 spline transfer case.

Ford NP205 - The Ford NP205 is a 31 spline transfer case. We offer and adapter that includes a spud shaft (23 X 31) that will fit the TR-4050 to the Ford T/C, 50-0207.

Ford Bronco Dana 20 - The adapter for the Dana 20 is the same as we use for the NV4500, 50-0209. This kit offers a spud shaft that couples the 23 spline TR-4050 to the Dana 20.

Toyota Land Cruiser - We offer 3 adapter kits to fit the TR-4050 to the 3 different transfer case input splines.

50-0300 fit the 10 spline 

50-0301 fits the 16 spline 

50-0302 fits the 19 spline


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