QU10322 NV4500 Shift Rail Interlock Plunger

QU10322 NV4500 Shift Rail Interlock Plunger is a New Old Stock (NOS) genuine New Venture part for all 1992-2007 NV4500 transmissions. Sold individually, requires two per transmission.

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Dan the Gear Man® Tech Notes:
Shift Interlock
Matching Parts
Lubricants, Sealants, Threadlockers
NV4500 Tools
Applications

Tech Note 1: Shift Interlock
QU10322 is part of the NV4500 top cover shift interlock system to prevent the possibility of shifting the transmission into two gears at the same time. The two QU10322 Plungers are separated by a small hardened steel transfer pin that passes through the center shift rail. When a shift rail is shifted into gear, the plungers and pin will move to block the other two rails from moving.

Tech Note 2: Matching Parts
Matching Parts for QU10322 NV4500Top Cover Pin Interlock Pin or Plunger:
QU10131 Shift Tower Seal or Boot for 1992-1997 Top Covers with Integral Towers
QK1108 Top Cover Roll Pin Kit
QU10219 1-2 Shift Rail
QK1145 Late Top Cover Service Kit for 1996-2007
QK1006 1992-1995 Top Cover Shift Rail Kit
QK1107 1996-2007 Top Cover Shift Rail Plug Kit
QU10222 Top Cover Small Parts Kit
QU10186 Plunger, Shift Rail Detent Except 2002-2007 GM
QU10110 Poppet Spring, Green Medium Compression
QU10160 Top Cover Oil Baffle
QU10052 1-2 Shift Fork
QU10032 OE 3-4 Fork or QU10082 Replacement 3-4 Shift Fork
QU10230 3-4 Shift Rail except 2002-2007 GM
QU10080 Reverse Shift Fork for 1992-1997 Covers with Integral Shift Towers
QU10050 Reverse Shift Fork for 1994.5-2007 Covers with Bolt-On Shift Towers
QU10220 5th-Reverse Shift Rail
QU10262 Bare Cover Plate for 1992-1997 Transmissions with Integral Shift Tower
QU10263 Bare Cover Plate for 1995-2007 Transmissions with Bolt-On Towers
QK1094 Reverse Shift Fork Pad Kit for 1992-1997 Reverse Forks with Straight Tips
QK1095 Reverse Shift Fork Pad Kit for 1997-2007 Reverse Forks with Curved Tips

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 V1003DVD NV4500 Overhaul Video for more information.

Tech Note 4: 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.

Applications

Chevy and GMC:
GM C1500, C1500, C2500, K2500, C3500, K3500 trucks, and P-series vans with NV4500, MW3, or MT8 Transmissions: 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007

Dodge, Plymouth, and Ram:
D150, W150, D250, W250, D350, W350 with Gas engine and NV4500 5 Speed: 1992, 1993
Ram 2500, Ram 3500 with NV4500 5 Speed Manual Transmission: 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005

Other Popular Applications:
Dodge 250, 350 Series with Cummins Diesel and NV4500 Transmission Retrofit Kit: 1989, 1990, 1991, 1992, 1993
Jeeps and Rock Crawlers with 5.04: Reverse Ratio NV4500 Conversions