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Home > Transfer Case Parts - Jeep, AMC > NP 231
NP 231 Transfer Case
Rebuild Kits / Parts
Drivetrain Parts Las Vegas offers great quality professionally rebuilt NP231 transfer cases and parts including rebuild parts kits that are designed to be top of the line overhaul kits. The New Process 231 series transfer case started to be installed in Jeep, Dodge, and Chevrolet applications in 1987. These transfer cases are part time four wheel drive with shift positions 4HI - 2HI - N - 4L. The NP231 is 1:1 direct drive in high range, and use planetary reduction gears for low range with a ratio of 2.72:1.
We have a transfer case cross reference and identification page to help assist you in correctly identifying your transfer case Click Here

GMC / Chevrolet T-Series 1988-97 / Jeep XJ, YJ and TJ 1986-On / Dodge Dakota 1988- On

KITS
















BK231
Rebuilder Kit - Bearings, Gaskets, Seals, & Pads
.940"/24mm wide BD50-8 input Brg. (GM, Dodge, Jeep)
1988-94
$96.66









BK231A
Rebuilder Kit - Bearings, Gaskets, Seals & Pads
.630/16mm wide 6010-N input Brg. (GM, Dodge)
1995-97
$89.33









BK231J
Rebuilder Kit - Bearings, Gaskets, Seals & Pads
.630/16mm wide input Brg. (Jeep except Liberty)
1994-06
$102.00









BK231JA
Rebuilder Kit - Bearings, Gaskets, Seals & Pads
.630/16mm wide input Brg. (Jeep Liberty)
2002-07
$82.95









TSK231
Overhaul Kit - Gaskets, O' Rings and Seals
(except Jeep)


$12.95









TSK231J
Overhaul Kit - Gaskets, O' Rings and Seals
(Jeep except Liberty)


$12.95









TSK231JA
Overhaul Kit - Gaskets, O' Rings and Seals
(Jeep Liberty)


$12.95









351001
Small Parts Kit


ALL
$34.95









TC - GILLY'S
Transfer Case Saver don't leave home without it, stop premature failure
Must Use With 4 Bolt Tail Housing


$44.95













SHAFTS
















351670
Input Shaft 21 Spline 4 1/8" Jeep w/.940 wide input bearing




$113.01









361670A
Input Shaft 23 Spline 4 1/4" Dodge w/.940 wide input bearing




$103.60









371670B
Input Shaft 23 Spline 5 1/8" w/.940 wide input bearing




$133.13









352670CC
Input Shaft 23 Spline 5 1/8" w/.630 wide input bearing




$128.00









351672
Main Shaft 26 Spline 18 3/8" Dodge




$288.30









FORKS
















352849A
Range Fork - #16976 or 17833
Aluminum Update
1986-93
$33.95









352850A
Mode Fork (iron) Cast #16196




$38.18









351850
Mode Fork 30 Teeth (Late Dodge)




$62.68









321840K
Fork Pad Kit


1986-On
$4.64









351334
Range Fork Bushing (Plastic)




$4.68 (EA)









SYNCHRO PARTS
















351701K
Mode Assembly (complete)




$123.15









351646
Mode Slider 24 Teeth




$54.41









351701
Mode Syncro 24/48 Teeth




$20.44









352646B
Mode Slider 30 Teeth




$124.64









351701A
Mode Syncro 30/60 Teeth




$24.90









351645K
Range Slider & Hub




$45.33









331843-2K
Mode Key & Spring Kit ( 48T Only )




$12.20









PLANETS
















351588A
Planet (6 Pinion) used w/.630" wide #6010-N Bearing


1994-Up
$178.70









351588
Planet (6 Pinion) used w/.940" wide #BD50-8 Input Bearing
1987-94 Call and see if we have a good used one
L/A
$355.51









5012367AA
Planet Thrust Washers (Plastic)




$5.28ea









CHAIN / SPROCKETS
















MG10-022
Drive Chain - 62 Pins, 1/2" Pitch, Round Pins
1.25" Wide - 31 Links
1988-On
$63.98









MG10-27
Drive Chain - 62 Pins, 1/2" Pitch, Round Pin
1.0" Wide - 31 Links
1989-Up
$63.98









351805
Drive Sprocket (1.25" wide chain)




$68.45









4636965
Driven Sprocket (1.25" wide chain)
1 PC Shaft/Sprocket, 1.25" Wide
L/A
$90.00









CASES
















351760-1
Case Half Front Cast #16118




$230.40









351760-2
Case Half Rear Cast# 16117




$107.17









351772A
Tail Housing ( cast# 16258 ) 4 Bolt




$83.35









351772
Tail Housing 5 3/4" Cast #16354


L/A
$110.90









351500
Oil Pump Assembly




$38.45









EXT BUSHINGS
















44066
Extension Housing Bushing 1.5" O.D.
Chevy / GM


$6.95









331066
Extension Housing Bushing 32 Spline
Chevy / GM


$8.85









12066
Extension Housing Bushing 1.510" O. D. 26 & 27 Spline
Dodge


$6.93









351334
Range Fork Bushing (Plastic) 2 per




$4.68ea









BEARINGS
















351240
Input Ball Bearing .940"
BD50-8
1986-96
$30.36









351240A
Input Ball Bearing .630"
6010N
1992-00
$19.65









411240
Input Pocket Bearing




$7.43









351268
Front Output Shaft Bearing - Front




$31.10









SCE2416
Front Output Shaft Bearing - Rear




$9.78









303211A
Drive Sprocket Bearing (.940)




$9.85









351268
Rear Mainshaft Bearing 2.439 od / .629 wide, 1987-94




$14.56









351268A
Rear Mainshaft Bearing 2.833 od / .668 wide, 1994-on




$15.90









GASKETS / SEALS
















351304
Adapter to Transfer Case Gasket


1986-97
$2.85









44348
Adapter Housing Seal (trans side)
G/M / Jeep / Dodge - Not in Kits
1986-On
$7.15









301080
Input Gear Seal - Double-Lip


1986-97
$5.91









321081
Front Output Shaft Seal 2.455 X 1.485


1994-97
$6.63









321071
Rear Output Shaft Seal 2.380 X 1.510
Chevy/GMC/Jeep/Dodge
1986-96
$6.63









44074
Rear Output Shaft Seal 2.385 X 1.430


1988-83
$8.49









321081
Rear Output Shaft Seal 2.455 X 1.485


1992-97
$8.49









361071
Rear Output Shaft Seal 2.585 X 1.090


1986-00
$8.49









411074
Rear Output Seal 2.695 X 1.825




$8.49









34074
Rear Output Seal 2.710 X 1.830




$8.49









321070
Oil Pump Seal




$5.87









HARDWARE
















321411B
Switch, Vacuum
4 prong black


$25.90









321411
Switch, Vacuum
3 prong black


$35.21









D361410
Switch, 4wd Indicator ( electric )




$60.78