QU10308 NV4500 Synchro Strut

QU10308 NV4500 Synchro Strut for 3-4, 5th, and Reverse synchronizer assemblies. Sold individually, order 3 struts per synchronizer assembly.

Also see QK1099 Synchro Spring and Strut Kit.

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:
Synchronized Reverse Gear
Matching Parts
Lubricants, Sealants, Threadlockers
Applications

Tech Note 1: Synchronized Reverse Gear
All New Venture NV4500 5 speed manual transmissions use three QU10308 struts for the 3-4 synchro assembly and three for the 5th gear synchro assembly. All Dodge and 1999-2007 GM NV4500 transmissions also use three QU10308 struts for the synchronized reverse gear. 1992-1998 GM NV4500 transmissions do not have a synchronized reverse gear from the factory and do not use QU10308 struts for reverse gear.

Tech Note 2: Matching Parts
QU10309 Synchro Spring
QK1099 Spring and Strut Kit
QU10206 3-4 Synchro Sleeve
QU10122 3-4 Synchro Hub
QU10039 Synchro Sleeve for 5th Gear and Reverse Gear
QU10171 39 Tooth Synchronized Reverse Gear for 1992-1996 Dodge Ram
QU10085 35 Tooth Reverse Gear for 1997-2005 Ram and 1999-2007 GM
QU10729 Countershaft 5th Gear for 1992-1994 GM
QU10203 Countershaft 5th Gear for 1992-2005 Ram and 1995-2007 GM

Tech Note 3: 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

Applications:
Chevy and GMC:
All with NV4500 5 Speed: 1999m 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007

Dodge and Ram:
All with NV4500 5 Speed: 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005