New Venture Gear 3550

The New Venture Gear 3550 is a five-speed cast-aluminum transmission was available for the Jeep Wrangler TJ and Jeep Cherokee XJ beginning in 2000. It was also found in Dodge downsized pickups. It was used until 2004 when it was retired for the NSG370 six-speed.

The NV3550 was available in 2-wheel and 4-wheel drive variations. It was used as the manual transmission for the 2000 and 2001 Jeep Cherokee XJ and found it’s way into the Jeep Wrangler TJ from 2000 to 2004.

This transmission has a 1-1/8″ x 10 spline input shaft and a 23 spline output shaft. All five forward gears are fully synchronized with reverse being the only unsynchronized gear. The manufacturer rates this transmission at being able to handle 300ft-lbs of torque.

The factory recommended transmission fluid is the Mopar Manual Transmission Fluid, but according to some sources it is just as fine to use SAE 30W or SAE 10W-30 motor oil in this transmission – just ensure that it is a high quality oil to ensure it doesn’t foam.

Gear Ratios

1st Gear4.01
2nd Gear2.33
3rd Gear1.39
4th Gear1.00
5th Gear0.78

Fluid Type and Capacity

LubricantMopar MT Fluid
SAE 30W Oil
Capacity3.3 qts (3.15L)
Avoid GL-5 lubricant, which can cause increased wear on the brass synchros found in this transmission

Other Specifications

Length (2WD)unknown
Length (4WD)16.7″
Input Splines10
Output Splines23
Pilot Tip Diameterunknown

Transfer Case Compatibility

The NV3550 was found with NP231 and NP241OR transfer cases.

Engine/Bellhousing Compatibility

GM – Buick V6, Chevy Small Block V6 and V8 conversions are available. Information and parts for conversion can be found made by Novak here.

AMC Jeep – The NV3550 is factory compatible with AMC 4.2L I6 engine. It can also be adapted to 1972-1991 AMC I6 and V8 using kits made by Novak here.

Ford – The NV3550 can be adapted to the Ford Windsor V8 and I6 bellhousings that feature the “butterfly” bolt pattern using this kit by Novak.

Write-ups and Tutorials

To Be Completed

Parts and Fluids

Engine Fluids

EngineFluid TypeCapacity
AMC 2.5L I4Above 0°F: 10W-30
Below 60°F: 5W-30
4.0 qts
AMC 4.0L I6Above 0°F: 10W-30
Below 32°F: 5W-30
6.0 qts
GM 2.5L I4Above 0°F: 10W-30
Below 0°F: 5W-30
3.0 qts
Renault 2.1Ltbdtbd
VM Motori 2.5Ltbdtbd

Transmission Fluids

TransmissionFluid TypeCapacity
Chrysler A904 3-Speed
Aisin-Warner AW-4 4-Speed
Chrysler 30RH 3-Speed
Borg-Warner T-4 4-Speed ATF Dexron II1.75qts
Aisin-Warner AX4 4-Speed75W-90 GL3 or GL4
10W-30 Motor Oil
2WD: 3.7qts
4WD: 3.5qts
Borg-Warner T-5 5-SpeedATF Dexron II1.75qts
Aisin-Warner AX5 5-Speed75W-90 GL3 or GL4
10W-30 Motor Oil
2WD: 3.7qts
4WD: 3.5qts
Peugeot BA-10/5 5-Speed
Aisin-Warner AX15 5-Speed75W-90 GL3 or GL4
10W-30 Motor Oil
2WD: 3.32qts
4WD: 3.27qts
New Venture Gear NV3550 5-SpeedMopar MT Fluid
SAE 30W Oil

Axle Fluids

AxleFluid TypeCapacity
Dana 3075W-90
75W-140 (towing)
Dana 3575W-90
75W-140 (towing)
Dana 4475W-90
75W-140 (towing)
Chrysler 8.2575W-90
75W-140 (towing)

Transfer Case Fluids

Transfer CaseFluid TypeCapacity

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