Description
Tremec TR-4050 Manual Transmissions – Professional Overview
The Tremec TR-4050 Manual Transmission TDET17341 is a 5-speed manual transmission developed for demanding 4WD drivetrain applications.
The transmission is designed around the NV4500 bolt pattern and is specified with a 600 lb.-ft. torque rating. Its gear arrangement combines a very low 6.16:1 first gear with a 0.76:1 fifth-gear overdrive, giving the transmission a broad ratio spread for applications that require both low-speed control and reduced engine speed during overdrive operation.
The transmission uses a die-cast aluminum alloy housing, providing a relatively lightweight construction while maintaining the rigidity required for a heavy-duty drivetrain application.
The supplied specifications identify the transmission as a non-remanufactured unit, sold individually, with the shifter included.
Compatibility and Applications
The Tremec TR-4050 is designed for 4WD applications and uses the NV4500 bolt pattern.
Its 600 lb.-ft. torque capacity makes it appropriate for drivetrain applications requiring substantial torque handling capability. The supplied information specifically describes the TR-4050 as similar to the NV4500 and as a direct replacement.
The transmission has a 1.125-inch input shaft diameter with 10 splines and a 23-spline output shaft. These dimensions are important when confirming compatibility with the vehicle’s clutch, driveshaft, transfer-case, and other drivetrain components.
The supplied product information does not identify a specific vehicle list. Buyers should therefore verify the exact drivetrain configuration, bolt pattern, shaft specifications, 4WD configuration, and required accessories before ordering.
Gear Ratios and Drivetrain Performance
The TR-4050 manual transmission uses five forward gears with ratios designed for both low-speed operation and overdrive cruising.
| Gear | Ratio |
|---|---|
| First | 6.16:1 |
| Second | 3.11:1 |
| Third | 1.71:1 |
| Fourth | 1.00:1 |
| Fifth | 0.76:1 |
| Reverse | 6.03:1 |
The 6.16:1 first gear is described as an aggressive “Granny” gear, providing a very low ratio for applications where controlled low-speed operation is important.
At the opposite end of the range, the 0.76:1 fifth gear provides overdrive operation. This allows the transmission to reduce engine speed relative to a direct-drive fourth gear when cruising.
The supplied information also identifies high-contact, constant-mesh, helical gears as part of the transmission design.
Construction and Internal Design
The TR-4050 uses a die-cast aluminum alloy case designed to combine reduced weight with structural rigidity.
The internal design incorporates tapered bearings on the input, main, and counter shafts to provide internal stability. Needle bearings beneath the gears are used to reduce friction and noise.
The transmission uses advanced synchronizer technology to promote smoother shifting and reduced shift effort. The fifth-gear synchronizer is mounted on the countershaft to improve noise, vibration, and harshness characteristics during overdrive operation.
A multiple-rail internal shifter is included and is designed to provide positive shift feel.
The transmission also provides a standard right-hand, 6-bolt PTO mounting location, allowing compatible hydraulic pump installations where required.
Why This Manual Transmission Stands Out
The Tremec TR-4050 combines a low first gear, overdrive fifth gear, synchronized shifting, and a 600 lb.-ft. torque rating in a 5-speed 4WD transmission.
Its 6.16:1 first gear provides a significantly low starting ratio, while the 0.76:1 fifth gear gives the transmission an overdrive ratio for higher-speed operation.
The fully synchronized design is intended to reduce shift effort and provide smoother gear changes. The combination of helical gears, tapered bearings, needle bearings, and advanced synchronizer technology provides a drivetrain design focused on strength, stability, and shift quality.
The NV4500 bolt pattern also makes the transmission relevant to buyers looking for a compatible replacement or upgrade within an existing NV4500-based drivetrain configuration.
Who This Product Is Best For
This Tremec TR-4050 manual transmission is intended for buyers building, repairing, or upgrading compatible 4WD drivetrains.
It can be relevant to 4WD vehicle owners, drivetrain specialists, automotive technicians, off-road builders, performance enthusiasts, and professional transmission installers.
The transmission is particularly relevant where a 600 lb.-ft. torque rating, NV4500 bolt pattern, low first gear, and overdrive fifth gear are required.
Because bellhousing and yoke components are not included, buyers should confirm that the remaining drivetrain components are compatible with the transmission before ordering.
Technical Specifications
| Specification | Details |
|---|---|
| Product Name | Tremec TR-4050 Manual Transmissions TDET17341 |
| Brand | Tremec |
| Manufacturer’s Part Number | TDET17341 |
| Product Line | Tremec TR-4050 Manual Transmissions |
| Part Type | Manual Transmission |
| Number of Gears | 5 |
| Application | 4WD |
| Torque Capacity | 600 lb.-ft. / 813 N·m |
| First Gear Ratio | 6.16:1 |
| Second Gear Ratio | 3.11:1 |
| Third Gear Ratio | 1.71:1 |
| Fourth Gear Ratio | 1.00:1 |
| Fifth Gear Ratio | 0.76:1 |
| Reverse Ratio | 6.03:1 |
| Input Shaft Diameter | 1.125 in. |
| Input Spline Quantity | 10 |
| Input Shaft Length | 6.5 in. |
| Output Shaft Spline Quantity | 23 |
| Tailshaft Length | 6.500 in. |
| Case Material | Aluminum |
| Overall Length | 19.5 in. |
| Weight | 164 lb. / 74 kg |
| Pilot Diameter | 0.590 in. |
| Index Retainer Diameter | 5.125 in. |
| Oil Capacity | 3.7 qt. / 3.5 L |
| Bellhousing | Not included |
| Yoke | Not included |
| Shifter | Included |
| PTO Mount | Right-hand 6-bolt |
| Bolt Pattern | NV4500 |
| Remanufactured | No |
| Quantity | Sold individually |
Ordering and Support Information
Before ordering the Tremec TR-4050 TDET17341, verify that the vehicle uses a compatible 4WD drivetrain and NV4500 bolt pattern.
The input and output shaft specifications should also be compared with the existing drivetrain. This includes the 10-spline input shaft, 23-spline output, 1.125-inch input diameter, and 6.5-inch input shaft length.
The product is supplied with a shifter, but the bellhousing and yoke are not included. Buyers should account for these components when planning the installation.
The supplied specifications identify the transmission as not remanufactured and sold individually.
The transmission’s 600 lb.-ft. rating, gear ratios, physical dimensions, oil capacity, and shaft specifications should all be considered when determining suitability for a particular drivetrain.
Frequently Asked Questions
What is the Tremec TR-4050 transmission designed for?
The Tremec TR-4050 is a 5-speed manual transmission designed for 4WD applications. The supplied information identifies it as a direct replacement using the NV4500 bolt pattern, with a 600 lb.-ft. torque rating and fully synchronized forward gears.
What is the torque capacity of the TR-4050?
The supplied specification lists a 600 lb.-ft. torque capacity, equivalent to approximately 813 N·m. This rating is an important consideration when matching the transmission to the engine and overall drivetrain.
What are the Tremec TR-4050 gear ratios?
The TR-4050 uses a 6.16:1 first gear, 3.11:1 second, 1.71:1 third, 1.00:1 fourth, and 0.76:1 fifth. Reverse is listed at 6.03:1. The wide ratio spread combines a low first gear with an overdrive fifth gear.
Does the TR-4050 use the NV4500 bolt pattern?
Yes. The supplied product information specifically states that the transmission uses the NV4500 bolt pattern. Buyers should still verify the complete drivetrain configuration before ordering because bolt-pattern compatibility alone does not establish complete installation compatibility.
Does the Tremec TR-4050 include a shifter?
Yes. The shifter is included with the transmission. However, the supplied specifications state that the bellhousing and yoke are not included.
How much oil does the TR-4050 hold?
The supplied specifications list an oil capacity of approximately 3.7 quarts or 3.5 liters. The transmission also uses tapered bearings, needle bearings, synchronized gears, and a die-cast aluminum housing.
Is the Tremec TR-4050 remanufactured?
No. The supplied specifications identify the TDET17341 as not remanufactured. It is sold individually as a Tremec TR-4050 manual transmission.
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