QU10039 NV4500 Reverse or 5th Gear Synchronizer Sleeve


QU10039 NV4500 Reverse or 5th Gear Synchronizer Sleeve is a current production replacement 5th or Reverse Synchro Sleeve or Slider for all 1992-2007 GM and 1992-2005 Dodge New Venture NV4500 5 speed manual transmissions. QU10039 is the perfect replacement for your damaged original 5th Gear or Reverse Gear Synchro Sleeve. Imported.

Reverse or 5th Synchronizer Sleeve
* 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:
There are two QU10039 Clutch Sliders in every New Venture NV4500 5 speed manual transmission. The mainshaft reverse gear and countershaft 5th gears use QU10039. Synchro clutch teeth wear issues with NV4500 QU10039 sliding sleeves or rings is most common on the reverse gear ring of 1992-1998 GM transmissions with unsynchronized reverse gear. For synchronized applications, wear on the leading edge of the clutch teeth usually is caused by one or more of these causes: wrong or contaminated oil, clutch release issues, excessive transmission shaft end-play, shift fork wear, or use of bronze instead of lined synchro rings. A worn shift fork may also cause visible wear to the QU10039 slider shift fork groove.

tech note

Dan the Gear Man® Tech Note 2:
The six piece Synchro Strut and Spring Kit for QU10039 Slider is QK1099. Countershaft 5th gear and mainshaft reverse gear synchro assembly procedures are covered in my TM1003 NV4500 Shop Manual or V1003DVD NV4500 Overhaul Video.

tech note

Dan the Gear Man® Tech Note 3:
Matching Parts for QU10039 for NV4500 Countershaft 5th Gear Sleeve:
QU10203 6.22" Diameter 5th Gear 1992-2005 Dodge, 1995-2007 GM
QU10729 6.46" Diameter 5th Gear 1992-1994 GM
QK1099 Synchro Strut Set
QU10003 5th Gear Synchronizer Ring
QU10202 5th Gear Clutch
QU10016 5th Gear Shift Fork
QU90020 NV4500 Manual Transmission Oil
TM1003 NV4500 Shop Manual
V1003DVD NV4500 Overhaul Video


tech note

Dan the Gear Man® Tech Note 4:
Matching Parts for QU10039 for NV4500 Reverse Gear Sleeve:
QK1056 OEM 35 Tooth Reverse Gear and Synchronizer Assembly 
QU10022 or QU10085 35 Tooth Synchronized Mainshaft Reverse Gears
QU10074 35 Tooth Non-Synchronized Reverse Gear for 1997-1998 GM
QU10073 39 Tooth Non-Synchronized Reverse Gear for 1992-1996 GM
QU10171 39 Tooth Synchronized Reverse Gear 1992-1996 Dodge
QU10710 or QU10204 Synchronized Reverse Gear Clutch
QU10003 Reverse Synchronizer Ring
QU10080 Reverse Gear Fork 1992-1997 Dodge, 1992-1994 GM
QU10050 Reverse Gear Fork 1995-2007 GM, 1998-2005 Dodge
QK1099 Synchro Strut Kit
QU90020 NV4500 Manual Transmission Oil
TM1003 NV4500 Shop Manual
V1003DVD NV4500 Overhaul Video

tech note

Dan the Gear Man® Tech Note 5:
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 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

tech note

Dan the Gear Man® Tech Note 6:
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:
1992-1999 C1500, K1500, C2500, K2500, C3500, C3500HD, K3500 with NV4500 5 Speed
2000-2006 C2500, K2500, C3500, K3500 Standard and HD Pickup based models with NV4500 5 Speed
2000-2002 C3500HD 15,000 Lb. GCVW Cab and Chassis with NV4500 5 Speed
2007 C2500, K2500 Silverado Classic and Sierra Classic with NV4500 5 Speed

Dodge and Ram:
1989-1993 D250, W250, D350, W350 with Cummins Diesel AND our NV4500 Transmission Retrofit Kit
1992-1993 Ramcharger, D150, W150 with NV4500 5 Speed
1992-1993 D250, W250, D350, W350 with Gas Engine and NV4500 5 Speed
1994-2003 Ram 2500, Ram 3500 with V10 and NV4500HD 5 Speed
1997-2004 Ram 2500, Ram 3500 with Cummins Diesel and NV4500HD 5 Speed
1997-2005 Ram 2500, Ram 3500 with gas V8 and NV4500LD 5 Speed