QU10097 NV4500 Mainshaft Nut Set with Set Screws for Dodge LD and GM 4x4 Transmissions


QU10097 NV4500 Small Set Screw Type Mainshaft Nut Set for all New Venture NV4500 GM 4x4 and Dodge NV4500LD 5 speed manual transmissions (Set screws will not work on GM 4x4 transmissions with Vibration Dampers). Kit includes Nut, Concave Washer, 2 Brass Thread Protectors, and 2 Set Screws. Order Hi-Temp or High Strength Threadlocker from our Shop Chemicals web page. See Tech Note Below. Country of origin: Taiwan.

Aftermarket Small NV4500 5th Gear Mainshaft Nut Set
* Kits made up of multiple items may not show an inventory in-stock status but are almost always in stock!

tech note

The infamous "NV4500 5th Gear Failure" is almost always wrongly blamed on the nut. Having your nut back off is a consequence of an inadequately supported mainshaft 5th gear on stock and full spline mainshafts. Radial and axial movement of the gear will loosen the nut. No nut design will prevent 5th gear failures although they may delay them. The only way to solve the problem is to redesign the shaft, gear, and nut set which we did with our Torque King® mainshaft sets. See Tech Article 5th Gear Failures and Solutions for more information.

tech note

Matching Parts for QU10097:
QU10119 Timken Mainshaft Rear Bearing
QU10118 Timken Mainshaft Rear Bearing Cup
QA10009 Complete Mainshaft Shim Kit
QU10009B Basic Mainshaft Shim Kit
QK1093 Small Genuine NVG Nut Set for Dodge NV4500LD and GM 4x4
QU10069 Large Set Screw Type Mainshaft Nut Set for Dodge NV4500HD
QU10175 Mainshaft Rear Retainer Thrust Plate
QU10181 4x2 Rear Output Lock Nut for GM C-Truck
QU10303 Mainshaft Reverse Gear Thrust Washer
QU10144 Timken High Performance Countershaft Rear Bearing
QU10145 Timken High Performance Countershaft Rear Bearing Cup
QA10008 Complete Countershaft Shim Kit
QU10008B Basic Countershaft Shim Kit
QK1102 Lock Ring Kit Includes 4 Lock/Snap Rings
QK1118 Rear Bearing Retainer/Thrust Plate Bolt Set
QU10037 Countershaft Bearing Plate
QU10304 Countershaft 5th Gear Thrust Washer
QK1110 Thrust Washer Locating Pin Set
NV4500GME Low Ratio Transmission Case for 1992-1995 GM
NV4500E Low Ratio Transmission Case for 1996 GM and 1994-1996 Dodge
NV4500L High Ratio Transmission Case for 1997 and Newer GM and Dodge
QU90020 NV4500 Manual Transmission Oil
TM1003 NV4500 Shop Manual
V1003DVD NV4500 Overhaul Video

tech note

Lubricants, Sealants, Threadlockers:
Early production NV4500 Transmissions used an anaerobic sealant (QU90003) to seal between the main case and input bearing retainer, top cover, and rear housing. Mid-production units used anaerobic sealant just on the input retainer and RTV for everything else. Later production transmissions used black RTV Sealant (QU90006 or QU90005) for everything. Either type of sealant works fine (except the PTO covers ALWAYS should be sealed with RTV), but I prefer RTV for all components. Regardless of which sealant you use, make sure excess sealant does not block the lube access hole at the top of input retainer pilot that fits into the transmission case. Also, the threaded holes in the main case for the four retainer bolts and 12 PTO bolts are open ended, so you must use new bolts with factory applied threadlocker or apply Threadlocker (S24200) to your existing bolts to prevent oil seepage past the bolt threads. Apply High Strength (Dodge LD or GM) or High Temp Threadlocker (Dodge HD) to the mainshaft Nut. See my TM1003 NV4500 Shop Manual or V1003DVD NV4500 Overhaul Video for more information.

Lubricant and Chemical List for NV4500 Transmissions
QU90020 NV4500 Manual Transmission Oil
QU90003 Anaerobic Sealant
QU90006 3.35 oz Ultra Black RTV Sealant
QU90005 0.5 oz Ultra Black RTV Sealant
S24200 6ml Threadlocker
S9978 1 gram Threadlocker
QU90003 Anaerobic Sealant
QU90006 3.35 oz Ultra Black RTV Sealant
QU90005 0.5 oz Ultra Black RTV Sealant
S24200 6ml Medium Strength Blue Threadlocker
S9978 1 gram Medium Strength Blue Threadlocker
S9979 1 gram High Strength Red Threadlocker for Mainshaft Nut
S24026 High Temperature Threadlocker for Mainshaft Nut for Dodge HD Mainshaft Nut

tech note

Need Torque Specs or Rebuild procedures? Order my 116 page, full color illustrated NV4500 Rebuild Manual.

You will need some special tools to correctly service your NV4500 Transmission. The chart below lists our current NV4500 Special Tools for popular models.


Component 23 Spline
Dodge 4x4
29 Spline
Dodge 4x4
30 Spline
Dodge 4x2
31 Spline
Dodge 4x2
32 Spline
GM 4x4
35 Spline
GM 4x2
Mainshaft Nut QT2002 QT2001
QT2002 QT2001
1-1/2" Hex
Mainshaft Holding NLA QT2000 NLA QT2011 N/A N/A
5th Gear Nut
Torx® Cross Bolt
N/A QT9205 N/A QT9205 N/A N/A
Output Seal Installer N/A QT1801 N/A QT2058
Not Used Not Used
Tailshaft Bushing Remover and Installer Not Used Not Used Not Used QT2044 Not Used Not Used


Front Bearing Cup Installer
QT1802 Use with QT1101 or QT1119 Driver Handle. Also can use flat side to install Dodge 4x4 Rear Output Seal
Countershaft Front Bearing Installer QT2004 Can also use to press 3-4 Synchro Hub on original equipment mainshafts
Input Bearing & Countershaft Rear Bearing Installer QT2005 Can also use to install Input Seal
Input Bearing Cup Installer QT1801 Use with QT1100, QT1101, QT1116, or QT1119 Driver Handle.
Countershaft Support QT2006 Use to support front of countersahft when installing countershaft rear bearing
1-2 Synchronizer Support QT2008 Use to support 1-2 synchronizer hub during synchronizer assembly
10mm 1/2" Drive 12 Point Socket QT1020 USA Made Impact Socket for Factory Tailshaft Housing Bolts
Long Shank Punch for Shift Lug QT9300 3/16" x 8" Shank for 5th Gear Shift Lug Roll Pin


Chevy and GMC:
1992-2007 All with 4x4 New Venture NV4500 Transmission

Dodge and Ram:
1992-2005 All with New Venture NV4500LD Series Transmissions