QU10726 1992-2002 GM NV4500 4x2 C-Truck Rear Transmission Housing

This part has superseded to QU10233

QU10726 1992-2002 GM NV4500 4x2 C-Truck Rear Transmission Housing For Bolt-In (Push-In) Speedometer Sensor fits C1500, C2500, and C3500 Chevy Silverado and GMC Sierra GMT400 body style trucks with fixed rear output yoke and BOLT-IN speedometer sensor. New take-out part from brand new transmissions we disassembled for parts. Includes rear support needle bearing and rear output seal. USA Made.

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Dan the Gear Man® Tech Notes:
Product Note
Housing Specs
Speedometer Sensors
Sealants
NV4500 Tools
Rear Output Applications
Matching Parts
Applications

Tech Note 1: Product Note
Since these are cases from brand new transmissions we parted out, there will be some RTV sealant you will need to clean off the mating surfaces.

Tech Note 2: Housing Specs
QU10726 GM NV4500 Tailshaft housing is approximately 6-3/8"” long. The casting number is 25868. The bolt pattern on the front is the universal NV4500 8 bolt main case to rear housing pattern. The rear of the housing includes QU50155 output shaft support bearing, QU10319 Bearing Snap Ring, and QU10720 rear output seal.

Tech Note 3: Speedometer Sensors
4x2 GM NV4500 transmissions in C-Series trucks were built with two types of Speedometer Sensors. QU10227 Bolt-In or Push-In type speedometer Sensor first appeared in 1992 and it was used until early 2002 in C-Series GM trucks with the GMT400 body. The Speedometer Sensor is grooved for an o-ring and it is installed by pushing it into a smooth hole in the rear output housing. The sensor has an integral metal tab that is secured to the tailshaft housing with a bolt. QU10726 is made to work with the bolt-in speedometer sensor.

For the 1999 model year, GM introduced the C-Series, GMT800 body style and it was offered until 2007 with a NV4500 tailshaft housing that uses QU10228 Screw-In Speedometer Sensor.

Tech Note 4: Sealants
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 theadlocker 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.

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: 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 7: Matching Parts
Matching Parts for QU10726 GM NV4500 4x2 Rear Housing:
QU10106 12 Point Metric Tailshaft Housing Bolt with factory applied Threadlocker
QU10146 Tailshaft Housing Alginment Dowell
NV4500GME Transmission Main Case for 1992-1995 GM
NV4500E Transmission Main Case for 1996 GM
NV4500L Transmission Main Case for 1997-2007 GM
QU10184 1350 Series Rear Output Yoke
QU10727 1350 Series Rear Output Yoke with Dampener
QU30094 1410 Series Rear Output Yoke
QU10184 1410 Series Rear Output Yoke with Dampener
QU10227 Bolt-In Speedometer Sensor
QU90003 Anerobic Sealant
QU90006 3.35 oz Ultra Black RTV Sealant
QU90005 0.5 oz Ultra Black RTV Sealant
S24200 6ml Threadlocker
S9978 1 gram Threadlocker
QU90020 NV4500 Manual Transmission Oil
TM1003 NV4500 Shop Manual
VSG1003DVD NV4500 Overhaul Video

Applications

Chevy and GMC:
1992, 1993, 1994, 1995, 1996, 1997, 1998 C1500, C2500, C3500 series Silverado and Sierra
1999 C1500, C2500, C3500 series Silverado and Sierra GMT400 Classic Style Body
2000, 2001, 2002 C2500, C3500 series Silverado Classic and Sierra GMT 400 Classic Style Body including export models