QU10179 23 Spline NP241 Input Shaft for Dodge Ram with Auto Trans

QU10179 Genuine NPG 23 Spline x 4-5/16" New Process NP241DLD, NP241DHD Transfer Case Input Shaft for 1999.5-2002 Dodge Ram 2500, Ram 3500 Use with QU50873 Wide Input Bearing. This USA made, genuine New Process original equipment replacement part includes factory installed Input Shaft to Mainshaft Needle Pilot Bearing. Fits all 1999.5-2002 Dodge Ram 2500 and Ram 3500 4x4 trucks with automatic transmissions and either NP241DLD or NP241DHD Transfer Cases. USA Made.

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Dan the Gear Man® Tech Notes:
Assembly Numbers 
Planetary Tooth Cut
Input Bearing Width 
Pilot Bearing 
Synchro Clutch Teeth 
Transmission or Transfer Case Swaps 
Replacing 29 Spline with 23 Spline 
1994-2002 NP241DLD Matching Parts 
1994-2002 NP241DHD Matching Parts 
Applications

Tech Note 1: Assembly Numbers 
QU10179 23 spline Input Shaft was used on these Dodge NP241 transfer case assembly numbers:
52105025AB, 52105025AC, 52105025AD, 52105028AB, 52105028AC, and 52105028AD  Note: QU10179 was NOT used in 1996-1999.5 assemblies with no assembly number suffix (ex. 52105028), these transfer cases use QU50640 narrow bearing input.

Tech Note 2: Planetary Tooth Cut
Many early production (1994-1995 and possibly some very early 1996) Ram 2500, Ram 3500 4x4 trucks with New Process NP241DLD and NP241DHD transfer cases have a wide cut planetary gear set. While the planetary gear tooth profile is visibly different than narrow cut teeth used through 2002, the diameters of the 3 pieces (Input, Planetary, Annulus) are also slightly different. See Help Article IDN-400 for more information.

Tech Note 3: Input Bearing Width
1994-2002 Dodge Ram NP241DLD and NP241DHD Transfer Cases were built with input shafts using either a narrow (5/8” wide, Single Row) or wide (15/16” wide, Double Row) Input Ball Bearing. While a narrow bearing cannot be used on an input made for the wide bearing and visa-versa, the combined matching bearings and shafts are totally interchangeable. For example, If you are doing a manual transmission swap on a 1998 Automatic transmission equipped Cummins powered truck with NP241DHD Assembly number 52105028, you can replace the original QU50640 input shaft/QU50874 Narrow Bearing with QU10889 29 Spline Input/QU50873 Wide Bearing. Need more info? See IDN-401 Input Bearing Tech.

Tech Note 4: Pilot Bearing
The Input Shaft to Mainshaft Pilot Bearing is included with this Input Shaft. Your matching Mainshaft (Rear Output Shaft) will have a Pilot Diameter of 1-5/16". An optional steel adapter ring for using this input with smaller transfer cases like the NP231 will be available soon. 

Tech Note 5: Synchro Clutch Teeth
QU10179 has Single Cut Synchro Teeth. The Input Shaft Synchro Clutch Teeth are machined inside the back of the Input Shaft. The Sliding Clutch Collar will engage the Synchro Clutch Teeth in High Range. Single Cut teeth are beveled in one direction. Double Cut Teeth are beveled the same to left and right. Input Shafts with single cut Synchro teeth were only used on 1999.5 to 2002 NP241DLD and NP241DHD models on vehicles with automatic transmissions and some 2002 cases in manual transmission Ram trucks without the vacuum controlled Central Axle Disconnect (CAD). The actual engineering reason using the single cut tooth profile for late production automatic equipped models is not known by us, but except for manual transmission assembly 52105027AD used in 2002 trucks without Central Axle Disconnect and 52105028AB assemblies for 2001-2002, all 1998-2002 NP241DHD transfer cases using the single cut input use the same Sliding Range Sleeve (QU50150) as all the other NP241DHD applications. Since range shifting is usually done with the vehicle stopped and the transmission in park (auto) or neutral (manual), the cut of the synchro teeth is not usually an issue. (Click Here for Detailed Photo)

Tech Note 6: Transmission or Transfer Case Swaps
Replacing a manual transmission with an automatic? Verify the input shaft length needed to couple to your transmission. In most cases the RH series Dodge automatic transmissions mate to a 5-3/64" long transfer case input shaft. RE series typically need a 4-5/16" long transfer case input.

Tech Note 7: Replacing 29 Spline with 23 Spline 
If you are replacing a 29 spline manual transmission with a 23 spline output RE series transmission, use this 23 spline input shaft if your transfer case assembly number is one of these: 52105024AB, 52105024AC, 52105024AD, 52105027AB, 52105027AC, and 52105027AD.

Tech Note 8: 1994-2002 NP241DLD Matching Parts
Exploded View XV4002 1994-1997 Dodge Ram NP241DLD Transfer Case
Exploded View XV4004 1998-2002 Dodge Ram NP241DLD Transfer Case
QU50873 Input Ball Bearing, 15/16" Thick
QU10893 Snap Ring, Input Bearing to Input Shaft
QU10857 Input Seal
QU10572 Input Shaft to Planet Thrust Washer (uses 2)
QU50153 Planetary Assembly, most 1994-1996 NP241DLD and all 1997-2002
QU50152 Range Sliding Sleeve

Tech Note 9: 1994-2002 NP241DHD Matching Parts
Exploded View XV4000 1994-1996.5 Dodge Ram NP241DHD Transfer Case
Exploded View XV4001 1996.5-1997 Dodge Ram NP241DHD Transfer Case
Exploded View XV4003 1998-2002 Dodge Ram NP241DHD Transfer Case
QU50873 Input Ball Bearing, 15/16" Thick
QU10893 Snap Ring, Input Bearing to Input Shaft
QU10857 Input Seal
QU10572 Input Shaft to Planet Thrust Washer (uses 2)
QU50494 Planetary Assembly, most 1994-1996 NP241DHD and all 1997-2002
QU50150 Range Sliding Sleeve

Applications
Dodge Ram:
Ram 2500, Ram 3500 with NP241 Transfer Case Assembly Numbers 52105025AB, 52105025AC, 52105025AD, 52105028AB, 52105028AC, and 52105028AD: 1999.5, 2000, 2001, 2002