The Tremec TR4050 5-Speed Transmission
The TREMEC® TR4050 is a robust and versatile 5-speed manual O/D transmission designed for heavy-duty 4WD applications. Engineered with durability and high performance in mind, the Tremec 4050 is sought after by off-road enthusiasts to handle even most demanding of off-roading situations, including heavy-duty truck work and custom builds. With an overgear drive and high torque capacity, you can rely on the Tremec transmission for on- and off-road driving.
Key Features:
- Durable cast iron case
- 5-speed configuration
- A high torque capacity, capable of handling up to 600 lb-ft of torque,
- Gear 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 the 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 gears synchronized
- Advanced synchronizer technology promotes smoother shifting and reduced shift effort for smooth and easy shifting
- 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 a 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 has 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, and 32. We can currently bolt to the 10 splines 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 three adapter kits to fit the TR-4050 to the three different transfer case input splines.
50-0300 fit the 10 spline
50-0301 fits the 16 spline
50-0302 fits the 19 spline
Quality Conversion Products
At Advance Adapters, we are happy to help answer any other questions or offer advice on installing the Tremec TR-4050 transmission. We have been experts in quality conversion products since 1971 and are here to help. Contact us today for more information.
