The TREMEC TR-4050 5-speed manual transmission is particularly suited for light and medium duty trucks. It includes a single overdrive and a light-weight aluminum housing. All forward gears are fully synchronized and use a carbon friction material for improved shift quality. Tapered roller bearings are used to minimize noise and vibration.
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 Rated (based on a GCVW of 15,000+ lbs)
• Weighs 164 lbs
• 19.5" overall length
• .590" Pilot diameter 26-TR4050, .750" on 26-TR4050D
• 5.6" index on the without a snout on the 26-TR4050 and 5.6" Index, with a 1.43" snout on the 26-TR4050D
• 1.125" Input shaft diameter, 10 spline, 6.5" length on 26-TR4050, 7.5" long on the 26-TR4050D
• OE validated at 10 years or 150,000 miles of use
• 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
We carry this transmission under P/N 26-TR4050 for Chevy and Jeep engine applications and 26-TR4050D mainly for Ford engine applications. The transfer case side of both of these transmissions is circular 6 with a 23 spline output.
Bellhousing Adapters:
712576 - Full Bellhousing to GM V8 engine (Use 26-TH4050)
712568 - Full Bellhousing to AMC Straight 6 and V8 (Use 26-TH4050)
712551 - Adapter plate kit to retain a Ford Bellhousing (Use 26-TH4050D)
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 fits the 10 spline
50-0301 fits the 16 spline
50-0302 fits the 19 spline
This photo shows the shifter location on both a AX15 and the TR-4050. The measurements is from the front of the transmission to the handle.
AX15 and NV3550-------------- 12” shifter center
TR4050---------------------------- 9.5” shifter center