NP263 Chevrolet GMC Transfer Case

Quality NP263 Transfer Case Parts the First Time

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Below you will find a detailed list that includes complete Rebuilt Transfer Cases, bearing rebuild kits, gaskets, seals, small parts & thrust washers, bushings individual bearing, forks, hub sliders, synchronizers, shift motor, oil pump, planets, shafts, cases housings, chain, sprockets and miscellaneous parts. If you need more information or cannot find the parts you need give us a call, if you would like to save money, ask about our good take out parts (GTO), they are inspected and guaranteed.

Use our online shopping cart, just click the part number and see additional information, add to cart or proceed to check out. If you need more information or cannot find the parts you need give us a call 888-824-2012

Having issues diagnosing problems with your NP263 transfer case? We can help you with free technical support! We have a large inventory of rebuilt NP263 transfer cases plus Transfer Case parts.

Transfer Cases are tested before leaving the factory. This transfer case was manufactured by New Process. This model is a chain driven electric shift and part time transfer case. The output is on the driver-side with center rear output. This unit has been utilized in Chevrolet and GMC 1500, 2500 and 3500 pickup trucks & Suburban’s from 2001-Up. There are three different versions of this unit the light duty “LD” , heavy duty “HD” and the extra heavy duty unit “XHD”. The 263XHD unit is supplied with most diesel versions, the HD version has a 6 pinion planet and utilizes a 1.5″ wide chain.

The NP263 has 2.72:1 ratio, and has a magnesium case has either 4WD full-time, neutral and low 4WD, 2WD high and 4WD high. These units have different input spline counts: 27 splines in the NP263, 32 splines in the NP263 and 29 input splines in the NP263XHD.

This unit has a couple of engineering design problems, the oil pump can wear a hole in the rear case half, we recommend as part of your preventative maintenance program to install our machined aluminum case protector to save major repairs. A better option may be to install an upgraded rear case, see above. The second problem is thought to be caused by heat build up, failure of the shift forks causing the plastic pads to melt and damage the range shift hub and sometimes cause shaft damage. Recommended fluid is Automatic Transmission Fluid ATF.

We can provide a rebuilt NP263 transfer cases with a 24 month warranty we also offer all parts required to rebuild your unit, we have new parts we can also provide good used takeout parts to save you money!

Free NP263 Transfer Case parts illustration

Below we provide a NP263 parts illustrations to assist you with the correct identification of the parts you need. Select the parts you require from the the list below and give us a call. To speak to a Drive Train Expert or to place and order call toll free 888-824-2012, buy factory direct and save money!

This information tag is located on rear of transfer case near where the driveshaft exits. The NP263 can be followed by and “HD” or “XHD”

Need Stronger Parts?

Midwest Transmission can Cryogenic Treat any shaft or gear. This cryo treatment will add 30% in component strength. Call 888-824-2012 for a quote.

Application Model Years
Chevrolet & GMC 2500 263HD 32 spline input 32 spline output 2003-2004
Chevrolet & GMC 2500 263XHD 29 spline input 31 spline output 2003-2004
Chevrolet & GMC 2500 263HD 32 spline input 32 spline output 2003-2007
Chevrolet & GMC 2500 263XHD 29 spline input 31 spline output 2003-2007
Chevrolet & GMC 3500 263HD 32 spline input 32 spline output 2003-2006
Chevrolet & GMC 2500 263XHD 29 spline input 31 spline output 2003-2006
Chevrolet & GMC 3500 263HD 32 spline input 32 spline output 2001-2002
Chevrolet & GMC 2500 263XHD 29 spline input 31 spline output 2001-2002

Rebuilt Tested NP263 Transfer Cases 24 month warranty

Description Part Number
GM Silverado 27 Spline Input 2001-Up NP263 HD TCGM037
GM Silverado 32 Spline Input 2001-Up NP263 HD TCGM038
GM Silverado 29 Spline Input 2001-Up NP263 HD TCGM042
GM Silverado 2500 HD 29 Spline Input, 31 spline rear slip 2001-Up NP263XHD Elec Shift TCGM049

Rebuilt Overhaul Bearing Kits & Case Saver NP263 Transfer Case

Drawing Image Description Part Number
1999-UP NP261/NP263 Bearing Kit MWT371
1999-UP NP261/NP263XHD Bearing Kit MWT371A
Transfer Case Saver don’t leave home without it! MW52007

Small Parts Gaskets Seals, Orings & Filter NP263 Transfer Case

Drawing Image Description Part Number
N.I. NP 263 Gasket & Seal Kit TSK261
N.I. NP 263XHD Gasket & Seal Kit TSK-261XHD

SEALS

Drawing Image Description Part Number
070A Input Seal 200245
081A Front Output Seal. OE GM12547656
074A Rear Output Seal (2.695 inch x 1.825 inch) OE NV22507
074A Rear Output Seal (3.035 inch x 2.125 inch) OE NV21938

FILTERS

Drawing Image Description Part Number
012E Pump Screen (38 Spline Pump) (NP 263) NP4338943
012E Pump Screen (49 Spline Pump) (NP 263, NP 263XHD) NV16217-U
012-1 Hose and Filter to Tube (NP 263XHD) GM88962338

GASKETS & O-RINGS

Drawing Image Description Part Number
330A O-Ring, Pump Pick-Up Tube (38 Spline Pump) (NP 263) 401330
330A O-Ring, Pump Pick-Up Tube (49 Spline Pump) (NP 263, NP 263XHD) AS012
Small Parts Kit SP261-50

Bushings & Washers NP263 Transfer Case

Drawing Image Description Part Number
066A Extension Housing (2.010OD) (NP 263) 100408
066A Extension Housing (2.340OD) (NP 263XHD) OE NV18172

WASHERS

Drawing Image Description Part Number
215C Planet Thrust Washer (Plastic) 4338908

Bearings NP263 Transfer Case

Drawing Image Description Part Number
210D Output Bearing (Rear) (NP 263) 6208N
Output Bearing (Rear) (NP 263XHD) B41-6

Shift Forks NP263 Transfer Case

Drawing Image Description Part Number
850B Mode Fork (Aluminum) (Cast # 28624) (All) NV27756
849B Range Fork (Fits Slider w/ .368 Wide Fork Groove) (All) See Note NV43682
840KB Fork Insert Kit (All) 401840K

Note:
# 849 – There are two different designs to the range fork for the NV263 and the NV263XHD , the early fork has three removable pads. The late fork has 2 U- shaped pads and requires the updated range hub with the fork slot width of .368.

The Early fork with 3 pads is no longer available so if anything other than the pads are damaged it will require the purchase of the updated range fork NV43681, updated range hub NV43682 and 2 of the updated fork pads NV37284

The NV261 units use the NP17833 range fork

Shift Hubs & Sliders NP263 Transfer Case

Drawing Image Description Part Number
646C Mode Slider (NP 263, NP 263XHD) NV17823
645C Range Slider & Hub (Non-Updated) (.325 Wide Fork Groove) (NP 263) NP4796906
645C Range Slider & Hub (NP 263XHD) .368 (Updated) NV43681
606D Drive Hub / Bushing (Splines into Drive Sprocket) (2 Piece Synchro) NV27721

Synchronizers NP263 Transfer Case

Drawing Image Description Part Number
701-1D Mode Synchro (Inner) (All) NV27722
701-3D Mode Synchro (Middle) Friction (All) NV21635
701-5D Mode Synchro (Outer) (All) NV26081
843-2KC Mode Key & Spring Kit (All) NP208K

Pump & Planet NP263 Transfer Case

PUMPS

Drawing Image Description Part Number
500D Pump Assembly (38 Spline) (NP 263) NV29191
500D Pump Assembly (49 Spline) (NP 263, NP 263XHD) NV25904
463E Tube, Oil Pump (38 Spline Pump) (NP 263) 482463
463E Tube, Oil Pump (49 Spline Pump) (NP 263XHD) GM88962338

PLANETS

Drawing Image Description Part Number
588C Planet (6 Pinion) (used w/ .630 Wide Input Bearing) NV17869

Shafts NP263 Transfer Case

Drawing Image Description Part Number
670C Input Shaft (27 Spline) (NP 263) 401670
670C Input Shaft (32 Spline) (NP 263) NV42740
670C Input Shaft (29 Spline) (NP 263XHD) NV43996
672D Main Shaft (38 Spline Pump) (NP 263) 401672
672D Main Shaft (49 Spline Pump) (NP 263HD) NV48714
672D Main Shaft (49 Spline Pump) (NP 263XHD) NV47936

Cases & Housings NP263 Transfer Case

Drawing Image Description Part Number
760-1A Case Half (Front) NP 263) (NP 263HD) NP 263XHD NV45544
760-2A Case Half (Rear) (NP 263 Standard) MG620001
760-2A Case Half (Rear) (NP 263 XDH) (Cast # 25909) MG620002

Chain & Sprocket NP263 Transfer Case

Drawing Image Description Part Number
700E Chain (1.25 Wide) 49 Links, 3 Blue Links CL10-072
700E Chain (1.50 Wide) 42 Links XHD CL10-074
700E Chain (1.50 Wide) 49 Links XHD CL10-069
805D Drive Sprocket (1.25 Chain) (NP 263) NV31269-U
805D Drive Sprocket (1.50 Chain) (NP 263). 401805B
805D Drive Sprocket (1.50 Chain) (NP 263XHD) NV21966
806E Driven Sprocket (1.25 Chain) (NP 263) 401805
806E Driven Sprocket (1.50 Chain) (NP 263) 401805B
806E Driven Sprocket (1.50 Chain) (NP 263XHD) 401805A

Miscellaneous Components NP263 Transfer Case

Drawing Image Description Part Number
N.I. Selector Support, Shift Cam (All) 401626A
420A Shift Motor (01-Up) UMM2263
862D Snap Ring, Drive Hub (All) 16205
861D Snap Ring, Rear Output Shaft Bearing (NP 263).ALL 482860
861D Snap Ring, Rear Output Shaft Bearing (NP 263XHD) 482860
860D Snap Ring, Rear Main Shaft Bearing, Outer 263XHD GM12478091
Snap Ring, Rear Main Shaft Bearing, Outer 263HD GM12472966
436A Speed Sensor (All) GM12376520
997D Speedometer Tone Wheel (38 Spline) (NP 263) 401997
997D Speedometer Tone Wheel (49 Spline) (NP 263, NP 263XHD) 401997A
775A Stud, Front Case (All) 492775
490A Vent Tube (All) 411490

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