Description
QU10732 NV4500 Original Equipment 3-4 Synchronizer Assembly fits all 1992-2007 GM and 1992-2005 Dodge New Venture NV4500 5 speed manual transmissions. QU10732 is a genuine USA made, pre-assembled original equipment New Venture part that is taken from brand new transmissions we disassembled for parts. Includes QU10021 Sleeve, QU10020 Hub, plus 3 springs and 3 struts. Synchronizer assemblies do not include synchro rings.
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Dan the Gear Man® Tech Notes:
Common Wear Spots
Groove
NV4500 Tools
Matching Mainshafts
Lubricants, Sealants, Threadlockers
Matching Parts
Applications
Tech Note 1: Common Wear Spots
Your 3-4 Synchro Assembly is typically subject to wear in 3 spots:
Leading Edge of Synchro Clutch Teeth
Mainshaft Splines
Front Face where Thrust Bearing contacts
Tech Note 2: Groove
The input or forward side of the 3-4 synchro hub has a groove in it.
Tech Note 3: 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.
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 4: Matching Mainshafts
Matching Popular Mainshaft Part Numbers for QU10732 3-4 Synchro are:
Application | Mainshaft | Engine | Output Spline |
1992-1993 Dodge 4x4 1994-2005 Dodge NV4500LD | QU10214 | Gas V8 | 23 |
1994-2004 Dodge 4x4 NV4500HD | QA1045 or QU10011 | Diesel or V10 | 29 |
1995-2004 Dodge 4x2 NV4500HD | QU10013 | Diesel or V10 | 31 |
1992-2007 GM 4x4 | QU10098 | All | 32 |
1997-2007 GM C-Series 4x2 | QU10719 | All | 35 |
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 VSG1003DVD 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 6: Matching Parts
Other Matching Parts for QU10732 3rd - 4th Gear Synchro:
QU10134 Input to Mainshaft Thrust Bearing
QU10135 Bearing, 3rd Gear
QU10004 Synchronizer Friction Ring (uses 2)
QU10301 Snap Ring, 2-3 Gear Thrust Washer Retaining
QU10302 Thrust Washer (between 2nd and 3rd Gear)
QU10313 Teflon Bearing Spacer for 3rd Gear
QU10316 Pin, Thrust Washer Anti-Rotation
QU10049 or QU10702 4th Gear Clutch
QU10099 28 Tooth Mainshaft 3rd Gear 1992-1994 GM
QU10201 29 Tooth Mainshaft 3rd Gear 1992-2005 Dodge, 1995-2007 GM
QU10032 or QU10082 3-4 Shift Fork
Mainshafts: See Tech Note 4
QU10001 Premium Bearing and Seal Kit 1992-1996 Dodge
QU10005 Premium Bearing and Seal Kit 1997-2005 Dodge
QU10061 Premium Bearing and Seal Kit 1992-1995 GM 4x4
QU10062 Premium Bearing and Seal Kit 1996-2005 GM 4x4
QU10063 Premium Bearing and Seal Kit 1992-1995 GM 4x2
QU10064 Premium Bearing and Seal Kit 1996-2007 GM 4x2
QU90020 NV4500 Manual Transmission Oil
TM1003 NV4500 Shop Manual
VSG1003DVD NV4500 Overhaul Video
Applications
Chevy and GMC:
C1500, K1500, C2500, K2500, C3500, C3500HD, K3500 with NV4500 5 Speed: 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999
C2500, K2500, C3500, K3500 Standard and HD Pickup based models with NV4500 5 Speed: 2000, 2001, 2002, 2003, 2004, 2005, 2006
C3500HD 15,000 Lb. GCVW Cab and Chassis with NV4500 5 Speed: 2000, 2001, 2002
C2500, K2500 Silverado Classic and Sierra Classic with NV4500 5 Speed: 2007
Dodge and Ram:
D250, W250, D350, W350 with Cummins Diesel AND our NV4500 Transmission Retrofit Kit: 1989, 1990, 1991, 1992, 1993
Ramcharger, D150, W150 with NV4500 5 Speed: 1992, 1993
D250, W250, D350, W350 with Gas Engine and NV4500 5 Speed: 1992, 1993
Ram 2500, Ram 3500 with V10 and NV4500HD 5 Speed: 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
Ram 2500, Ram 3500 with Cummins Diesel and NV4500HD 5 Speed: 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
Ram 2500, Ram 3500 with gas V8 and NV4500LD 5 Speed: 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
Warranty
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