QA1045 HEAVY-DUTY 4X4 29 SPLINE NV4500 MAINSHAFT FOR 1994-2004 DODGE

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QA1045 29 Spline 4x4 NV4500 Full Spline Mainshaft for 1994-2004 Dodge New Venture NV4500HD 5 speed transmissions in Ram 2500 and Ram 3500 4x4 trucks with Cummins Diesel or V10 gasoline engines. QA1045 includes QU10705, the strongest, current production, 29 spline 4x4 mainshaft on the market plus an OE Style Split Nut, Extra Thick 3-Piece 5th Gear Thrust Washer Set, and Concave Mainshaft Lockwasher. QU10705 Mainshaft has full length splines for 5th gear which combined with the .300" thick Thrust Washer Set and 0.11" thick Concave Lockwasher greatly reduce the chance of the mainshaft nut loosening up. Imported. Note: QA1045 replaces QK1045.

Also see QU10011 Standard Full Spline 4x4 Mainshaft

QA1045 Full Spline 4x4 29 Spline Mainshaft
$229.98
* Kits made up of multiple items may not show an inventory in-stock status but are almost always in stock!

tech note

Dan the Gear Man® Tech Note 1:
QA1045 includes QU10705 Mainshaft which is grooved behind the 5th gear splines for an included, 0.300" wide, 3 piece piece Thrust Washer Set, Also included is an OE type split mainshaft nut with cross-bolt, and concave lockwasher.
QU10705 Specifications and Approximate Dimensions:
Overall Length: 17-1/2"
Output Spline: 1.475" x 29
3-4 Synchro Hub Spline: 1.45" x 28
1-2 Synchro Hub Spline: 3.365" x 20
Reverse Cluch Spline: 2.285" x 45
Fifth Gear Spline: 1.79" diameter x 1-7/8" long by 35 spline
Width of 3 Piece Thrust Washer: 0.30"

tech note

Dan the Gear Man® Tech Note 2:
For more information about NV4500 5th gear failures, see:
5th Gear Failures and Solutions
NV4500 Cast Iron Tailshaft Housings

We no longer make the Torque King® Mainshaft and Retrofit Kits as described in the 5th Gear Failures and Solutions, article which leaves full spline shafts the only choice currently available for Dodge NV4500HD transmissions. While full spline shafts do not actually cure the 5th gear issue, they do greatly reduce the chances of the nut backing off. QA1045 Kit is today's best option for preventing a 5th gear nut failure.

tech note

Dan the Gear Man® Tech Note 3:
Ever since the Cummins Diesel was introduced in the 1989 Dodge Ram, people have been modifying the engines to crank out more horsepower. Unfortunately, all the manual transmissions used behind the Cummins Diesel (Getrag G360 (1989-1993), NV4500HD (1994-2004), NV5600 (1999-2005), and G56 (2005 to current) are only rated for around stock engine torque. When you increase your power output, you also increase the chance of having a major transmission failure. While some reasonably effective steps can be taken to increase the torque ratings of specific components, there is no practical way I know of to really make your Ram manual transmission "bullet proof" for big torque increases. 

There are claims that cryogenically treating NV4500 gears will increase gear strength as much as 30%. Unfortunately, there does not seem to be any peer-reviewed documentary evidence to support those claims. Cryogenically treating gears is primarily a cold-hardening process that changes the molecular structure of steel to decrease wear while retaining or increasing hardness. If properly done, it is probable the cryogenic treatment process does slightly increase the impact and fatigue resistance of NV4500 gears, but not enough to significantly increase the ability of an NV4500 transmission to reliably handle more than 600 Lb.-Ft. of input torque especially considering the maximum factory torque rating of the NV4500HD transmission is only 460 Lb.-Ft..

tech note

Dan the Gear Man® Tech Note 4:
Matching Mainshaft  Gear Part Numbers for QA1045 Mainshaft Kit are:

Dodge
NV4500HD
Application
Mainshaft 3rd Mainshaft 2nd Mainshaft 1st Mainshaft Reverse Mainshaft 5th
1994-1996

QU10201 QU10035 QU10075 QU10171 QU10067
1997-2004 QU10201 QU10035 QU10075 QU10022
or
QU10085
QU10067
tech note

Dan the Gear Man® Tech Note 5:
Matching Synchronizer Parts for QA1045 Mainshaft Kit are:

Gear Synchronizer
Assembly
Synchronizer
Hub
Synchronizer
Slider
Strut
Kit
Synchronizer
Clutch
1st-2nd QK1058 QU10038 QU10081 QK1100 Part of Gears
3rd-4th QU10732 QU10122 QU10021
or QU10206
QK1099 4th QU10049
or QU10702
Reverse
1994-1996
Not
Available
Part of Gear QU10039 QK1099 QU10710
or QU10204
Reverse
1997-2004
QK1056 Part of Gear QU10039 QK1099 QU10710
or QU10204
tech note

Dan the Gear Man® Tech Note 6:
Mainshaft Bearings in matching Bearing Kits for QA1045 Mainshaft Kit are:

Bearing Individual
Bearing
1994-2004
TK10237
Taper Bearing Kit
1994-2004
QK1136
Primary Bearing Kit
1994-1996 QU10001
Master Bearing Kit
1997-2004 QU10005
Master Bearing Kit
Input
Pocket
To Main 
QU10133 NO YES YES YES
Input to
Main Thrust
QU10134 NO YES YES YES
3rd QU10135 NO NO YES YES
2nd QU10055 NO NO YES YES
1st QU10055 NO NO YES YES
Reverse QU10058 NO NO YES YES
Mainshaft
Rear Cup
QU10118 YES YES YES YES
Mainshaft
Rear
Bearing
QU10119 YES YES YES YES
tech note

Dan the Gear Man® Tech Note 7:
Matching Small Parts and Small Parts Kits for QA1045 Mainshaft Kit are:

Bearing Individual
Part Number
Sub
Kit
QU10221
Basic Small
Parts Kit

TK1179
Main Case 
Small
Parts Kit 
QK1010
Complete
Small
Parts Kit
3rd Gear Teflon Ring  QU10313 QK1098 No YES YES
3rd Gear
Snap Ring
QU10301 QK1102 YES YES YES
3rd Gear
Thrust Washer
QU10302 NO NO YES YES
1-2 Synchro
Snap Rings
QU10305 QK1103 YES YES YES
Reverse Clutch
Snap Ring
QU10300 QK1102 YES YES YES
Reverse Gear
Thrust Washer
QU10303 NO NO YES YES
Basic Mainshaft
Shim Kit
QU10009B NO YES NO YES
Complete Mainshaft
Shim Kit
QA10009 NO NO NO YES
tech note

Dan the Gear Man® Tech Note 8:
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.

TOOLS for SPECIFIC NV4500 MODELS

Component 23 Spline
Dodge 4x4
NV4500LD
29 Spline
Dodge 4x4
NV4500HD
30 Spline
Dodge 4x2
NV4500LD
31 Spline
Dodge 4x2
NV4500HD
32 Spline
GM 4x4
35 Spline
GM 4x2
Mainshaft Nut QT2002 QT2001
QT2036
QT2002 QT2001
QT2036
QT2002
QT2028
1-1/2" Hex
Socket
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
CALL
Not Used Not Used
Tailshaft Bushing Remover and Installer Not Used Not Used Not Used QT2044 Not Used Not Used

TOOLS For ALL NV4500 MODELS

Countershaft
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
tech note

Dan the Gear Man® Tech Note 9:
NV4500 Transmissions are frequently used for conversion applications. The Table below lists the most popular rear output applications and their associated parts.

Component 23 Spline
Dodge 4x4
29 Spline
Dodge 4x4
31 Spline
Dodge 4x2
w/Speedo
31 Spline
Dodge 4x2
No Speedo
32 Spline
GM 4x4
35 Spline
GM 4x2
Short*
35 Spline
GM 4x2
Long*
Mainshaft  QU10214 QA1045 or
QU10011
QU10013 QU10013 QU10098 QU10719 QU10212
Rear Housing QU10057 QU10057 QU10024 QU10083 QU10716 QU10233 QU10217
5th Gear** QU10007
QU10086
QU10067 QU10067 QU10067 QU10007
QU10086
QU10007
QU10086
QU10007
QU10086
5th Gear
Nut Set
QK1093
QU10097
QU10069 QU10069 QU10069 QK1093
QU10097
See Yoke
Nut
See Yoke
Nut
Speedometer
Drive
Not Used Not Used QU10027
QK1143
Not Used Not Used QU10177 QU10177
Speedometer
Snap Ring
Not Used Not Used QU10330
QK1143
Not Used Not Used Not Used Not Used
Speedometer
Sender
Not Used Not Used Contact
Dealer
Not Used Not Used QU10228 QU10228
Speedometer
O-Ring
Not Used Not Used QU10678 Not Used Not Used incl. with
QU10228
incl. with
QU10228
Spacer Not Used Not Used Not Used Not Used QU10172
QU10173
Not Used QU10738
Bushing or
Bearing
Not Used Not Used QU10025 QU10025 Not Used QU50155 QU50155
Bearing
Snap Ring
Not Used Not Used Not Used Not Used Not Used QU10319 QU10319
Output Seal QU10123 QU10123 QU10023 QU10023 Not Used QU10720 QU50204
Gasket TK10519 TK10519 Not Used Not Used TK30052 Not Used Not Used
Yoke Not Used Not Used QU40700
QU40354
QU40495
QU40700
QU40354
QU40495
Not Used QU10184
QU10727
QU30094
QU40902
Yoke
Spline Seal
Not Used Not Used QU10026 QU10026 Not Used QU30009 QU30009
Yoke Washer Not Used Not Used Not Used Not Used Not Used QU30095 QU30095
Yoke Nut See 5th
Gear Nut
See 5th
gear Nut
See 5th
Gear Nut
See 5th
Gear Nut
See 5th
Gear Nut
QU10181 QU10181

 *Electronic, Screw-In Speedometer Sensor
**22 Tooth Mainshaft 5th Gears listed for 1992-2005 Dodge and 1995-2007 GM with 5.61:1 1st gear ratio. 1992-1994 GM with 6.34:1 first gear ratio use 19 Tooth QU10728 Gear. QU10728 is NOT compatible with Dodge 29 and 31 Spline Output Shafts.

tech note

Dan the Gear Man® Tech Note 10:
Other Matching Parts for QA1045 Mainshaft Kit are:
QK1001 QA1045 and QU10067 Mainshaft and Gear Kit
QU10011 Original Fully Splined 4x4 Mainshaft
QU10076 Rebuilder Spec 1-1/4" x 10 Spline Input Shaft
QU10199 Replacement 1-1/4" x 10 Spline Input Shaft
QU10261 Upgrade 1-3/8'x 10 Spline Input Shaft Kit
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
S24026 High Temperature Threadlocker for Mainshaft Nut
QU90020 NV4500 Manual Transmission Oil
TM1003 NV4500 Shop Manual
V1003DVD NV4500 Overhaul Video
QT2000 29 Spline Shaft Wrench
QT2001 Mainshaft Nut Wrench, 1/2" Drive
QT2036 Mainshaft Nut Wrench, 3/4" Drive

tech note

Dan the Gear Man® Tech Note 11:
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. 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
S24026 High Temperature Threadlocker for Mainshaft Nut

Application

Dodge and Ram:
1994-2004 Ram 2500, Ram 3500 with 4x4 New Venture NV4500HD Transmission