QU10086 AM NV4500 Mainshaft 5th Gear

QU10086 Quality Reproduction 31 Spline x 22 Tooth NV4500 Mainshaft 5th Gears For 1992-2005 Dodge and 1995-2007 GM New Venture NV4500 standard-duty transmissions. QU10086 has 31 internal splines and they fit all 1992-2005 Dodge 23 spine 4x4, 32 spline Dodge 4x2 NV4500/NV4500LD Transmissions. For GM, these gears fit all 1995-2007 NV4500 transmissions except some export units with QU10213 Mainshaft. Small bore, 31 internal splines. Imported.

Need More Info? Use the handy Links below to access over 40 years of Dan's product and vehicle specific Tech Notes to easily get the information you need for your vehicle's repair, maintenance, or upgrade project!

Dan the Gear Man® Tech Notes:
Losing 5th Gear
Common Failures
Rear Output Applications
Will Not Fit
NV4500 Tools
Matching Parts
Applications

Tech Note 1: Losing 5th Gear
Of all the NV4500 variants, the GM 4x2 version of the New Venture NV4500 5 speed manual transmission is the most resistant to "losing fifth gear".

Tech Note 2: Common Failures
Typically, Countershaft 5th gear tooth failures occur from one of three causes: low or improper oil, misalignment of the maishaft to countershaft, and excessive horsepower/torque (over 275hp/600 Lb-Ft of torque). Broken 5th gear teeth are almost always caused by a combination of shaft misalignment (loose bearings or defective tailhousing) and exceeding the demonstrated 600 Lb.Ft input strength limit of the NV4500.

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 GM NV4500 transmission is only 450 Lb.-Ft..

Tech Note 3: Rear Output Applications
NV4500 Transmissions are frequently used for conversion applications. The Table below lists the most popular rear output applications and their associated parts.

 *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 4: Will Not Fit
QU10086 has 22 teeth and 31 internal splines. They will NOT fit Dodge NV4500HD transmissions which use a 35 spline mainshaft 5th gear. For a Dodge NV4500HD 5th gear, see QU10067.

Tech Note 5: NV4500 Tools
Need Torque Specs or Rebuild procedures? Order my 116 page, full color illustrated TM1003 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.

Tech Note 6: Matching Parts
Matching Parts for QU10086 NV4500 Mainshaft Fifth Gears:
QU10203 51 Tooth x 6.22" Diameter Countershaft 5th Gear
QU10214 Dodge NV4500LD 4x4 23 Spline Rear Output Shaft
QU10098 32 Spline 4x4 Output Shaft for GM
QU10719 35 Spline 4x2 Output Shaft for GM C-Trucks
QU10212 35 Spline 4x2 Output Shaft for 1992-2002 GM C3500HD
QU10236 32 Spline 4x2 Output Shaft for GM P-Trucks
QU10172 Vibration Dampener for GM 4x4
QU10173 Mainshaft Spacer for GM 4x4
QU10719 GM 4x2 Transmission Mainshaft Spacer/Tone Ring
QK1093 Original Equipment Mainshaft Nut Set for Dodge Light Duty or GM 4x4
QU10097 Aftermarket Nut Set with Set Screws for Dodge Light Duty or GM 4x4
QT2002 Mainshaft Nut Wrench for Dodge Light Duty or GM 4x4 models without Vibration Dampener
QT2028 Mainshaft Nut Socket for GM 4x4 models with Vibration Dampener

Applications

Chevy and GMC:
With New Venture NV4500 5 Speed Manual Transmission: 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007

Dodge and Ram:
D and W Series with Gas Engines and New Venture NV4500 5 Speed Manual Transmission: 1992, 1993
Ram 2500, Ram 3500 with 5 Speed Manual Transmission: 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005