NP231 Transfer Case Chevrolet, Dodge, GMC and Jeep Buy Factory Direct & Save, we Ship World Wide!

Having issues diagnosing problems with your NP231 transfer case?

We can help free knowledgeable technical support! We have a large inventory of rebuilt NP231 transfer cases plus Transfer Case parts. Our factory rebuilt re-manufactured.

Below you will find a detailed list that includes complete NP231 rebuilt Transfer Cases, bearing rebuild kits,(it is recommended that when ordering bearing overhaul kits you also order a small parts kit) gaskets, seals, small parts & thrust washers, bushings individual bearing, forks, hubs and sliders, oil pump, planets, chain, sprockets, shafts input & main, cases housings 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.

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.

Freet . Save Money no hassle 12 month warranty!

Our Rebuilt NP231 Transfer Cases are tested before leaving the factory. This transfer case was manufactured by New Venture Gear. This model is chain driven. The NP231 is 4WD with manual shift. The NP231 was used in Chevrolet and GMC small pickups and Jeep. This unit was utilized beginning in 1992.

What is the NP231 Transfer Case

The NP231 was manufactured with left side drop output and has a low gear ratio of 2.72 to 1. This unit has 2WD and 4wd, combination of 2 high, 4 high, neutral and 4 low. The unit has a 27 spline front output and utilizes a rear slip yoke. The NP231 was offered in Chevrolet, Dodge, GMC and Jeep. Some pickups in a heavy duty version with wider chains, sprockets and HD planetary.

NP231 Transfer Case Issues

This unit can have issues with premature chain failure, caused by running the NP231 transfer case on hard surfaces like concrete or asphalt, Run 4WD only on loose dirt, snow, mud, sand or grass as the different wheel speeds in turns can put excessive torque loads on chain and sprockets.

If you have purchased your vehicle used the very first order of business is to double check the tire diameters. Used car dealers may have mismatched the tires to make the sale. Mismatched tires will cause the NP231 transfer case to fail. Recommended fluid for the NP 231 transfer case is automatic transmission fluid (ATF).

discount on np231 partsWe can provide a rebuilt NP231 transfer cases with a 12 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!

Select this link to see what models that use this Transfer Case.

Free NP231 Transfer Case parts illustration

Below we provide a NP231 parts illustrations to assist you with the correct identification of the parts you need. Upgrade parts are available for the NP231. Select the parts you require from the the list below and give us a call. See the complete line of products that we can provide at www.midwesttrans.com. To speak to a Drive Train Expert or to place and order call toll free 888-824-2012 , buy factory direct and save money!

Use our online shopping cart, just click the part number and see additional information, add to cart or proceed to check out.

 

Applications  
Model Years
 

NP231 transfer case replacements and parts

This information tag is located on rear of transfer case near where the driveshaft exits. Please supply the assembly number when ordering a replacement.

right parts first time

 

S10 Blazer & Pickup 27 spline input, 32 spline rear output
1992-1997
Dakota 23 spline input, 32 spline rear output
2000-2001
Dakota 23 spline input, 27 spline rear output
1994-1999
Dakota 23 spline input, 26 spline rear output
1988-1996
Durango 23 spline input, 32 spline rear output
2000
Durango 23 spline input, 27 spline rear output
1998-1999
Durango 23 spline input, 32 spline rear output DHD
1998-1999
Ram 1500 Pickup 23 spline input, 32 spline rear output DHD
1994-2000
GMC Jimmy 27 spline input, 32 spline rear output
1994-1997
GMC Sonoma 27 spline input, 32 spline rear output
1992-1997
Jeep Cherokee 23 spline input, 27 spline rear output
1989-2001
Jeep Cherokee 21 spline input, fixed yoke rear output
1989-1990
Jeep Comanche 23 spline input, 27 spline rear output
1989-1992
Jeep Grand Cherokee 23 spline input, 27 spline rear output
1993-1995
Jeep Liberty 23 spline input, 32 spline rear output
2002-Up
Jeep Wrangler 23 spline input, 27 spline rear output
1991-2006
Jeep Wrangler 23 spline input, fixed yoke rear output
1993-2003

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.

Drawing Image Description Part Number Core
Price
New Units
N.I. Unit 87-90 Wrangler NP231 21 Spline STD TCAJ022N $333.33
$966.67
N.I. Unit 1987-Up Dakota NP231 27 Spline NEW TCCRY010N $333.33
$933.33
N.I. Unit 1988 S10 NP231 With Manual TCGM016N $333.33
$666.67
N.I. Unit, 94-6 2.5 5SPD Wrangler NP231 NEW TCAJ017N $333.33
$966.67
N.I. Unit, 94-97 Ram 1500 NP231 Transfer Case TCCRY011N $333.33
$1,000.00
N.I. Unit, 97-UP NP231 Dakota 8CYL Transfer Case TCCRY020N $333.33
$1,000.00
N.I. Unit, New NP231 Jeep 23 Spline LONG IP 52097599 TCAJ016N $333.33
$571.43
N.I. Unit,94-5 WranglerNP231 4CYL STD 21 Spline TCAJ020N $333.33
$1000.00
N.I. Unit,94-96 Cherokee 4 CYL AT NP231 23Spline TCAJ018N $333.33
$1133.33
Rebuilt Units
N.I. Rebuild, 87-UP NP231 Cherokee Switch LOC 23Spline TCAJ010N $333.33
$1000.00
N.I. Rebuild, 91-93 4CYL NP231 21Spline TCAJ015N $333.33
$966.67
N.I. Rebuild, 94-6 Grand Cherokee NP231 STD 23Spline TCAJ014N $333.33
$966.67
N.I. Rebuild Cherokee Switch LOC 21 Spline 87-93 TCAJ009 $333.33
$533.33
N.I. Rebuild, Cherokee Switch LOC 23 Spline 87-94 NP231 TCAJ010 $333.33
$1,000.00
N.I. Rebuilt, 1994-1996 Ram 1500 MWTTCAJ011 $333.33
$1,000.00
N.I. Rebuilt, 1997-Up Ram and 1500 Dakota MWTTCCRY020 $333.33
$866.67
N.I. Rebuilt, 87-UP Dakota NP231 27 Spline CK Switch TCCRY010 $333.33
$700.00
N.I. Rebuilt, 88-UP 26 Spline NP231 Dodge Transfer Case TCGM016 $333.33
$666.67
N.I. Rebuilt, 88-UP 26 Spline NP231 Dodge Transfer Case TCCRY009 $333.33
$700.00
N.I. Rebuilt, 89-92 NP231GM With Electronic TCGM017 $333.33
$800.00
N.I. Rebuilt, 94-97 Ram 1500 NP231 Transfer Case TCCRY011 $333.33
$866.67
N.I. Rebuilt, 97-UP NP231 Dakota 8CYL Transfer Case TCCRY020 $333.33
$866.67
N.I. Rebuilt,2003-2006 Jeep Wrangler 5 speed Manual MWTTCAJ037 $333.33
$1,000.00
Bearing Kits
N.I. Bearing, Kit 02-UP Jeep Liberty NP231 Transfer Case MWT-231JA  
$188.08
N.I. Bearing Kit 9 5-UP NP231 Narrow Input 6010N MWT-231A  
$90.52
N.I. Bearing Kit 87-94 NP231 BD50-8 Input MWT-231  
$92.88
N.I. Bearing Kit 94-ON NP231 Jeep MWT-231J  
$104.11
Small Parts
N.I. Oil Pickup Screen NP231 NP241 NP4338943  
$5.33
N.I. Ring, NP231 Syncro NP4329526  
$22.00
N.I. Small Parts Kit, NP231 NP233 SP231-50  
$26.96
N.I. Small Parts Kit. NP 231 MWTSP231-10  
$44.94
N.I. Switch, 4wd Indicator (3 Prong) MWT15664811  
$39.99
N.I. Switch, 4wd Indicator (4 Prong) MWT15832  
$21.91
N.I. Switch, 4wd Indicator (Electronic) MWT56006755  
$91.91
Gaskets and Seals
N.I. Gasket, Adapter to Transfer Case (GM) MWT100130  
$1.06
N.I. Oil Pickup Tube O-Ring MWTAS109  
$0.91
N.I. Seal, NP231 Jeep Liberty NP4210603  
$6.33
N.I. Seal, NP231 Liberty 5015847AA  
$26.00
N.I. Seal, 02-UP NP231 Jeep Liberty Transfer Case Kit TSK-231JA  
$105.57
N.I. Seal, Front Output (2.455 in x 1.110 in) MWT11778  
$10.47
35 Seal, Front Output (2.455 in x 1.485 in) MWT100223  
$6.46
35 Seal, Input MWT200245  
$3.73
080A Seal, NP207 NP231 Gasket Kit K100907  
$40.00
4 Seal, Pump MWTCR22306  
$3.33
N.I. Seal, Rear 02 Liberty NP231 NP242 NP5072307AA  
$13.33
35 Seal, Rear Output (2.380 in x 1.510 in) NP231 NP233 NP247 NP249 26/27Spline MWT8850A  
$3.66
12 Dakota 3Bolt Tail (Jeep 2PC) MWT100223  
$5.12
12 Seal, Rear Output (2.710 in x 1.830 in) Dakota 2 Piece 32 Spline MWTNV22507  
$28.67
12 Seal, Rear Output (2.385 in x 1.430 in) MWT15041  
$1.91
12 Seal, Rear Output (2.695 in x 1.825 in) MWT22507  
$28.67
12 Seal,Rear Output (2.585 in x 1.090 in) 32Spline Jeep 1PC Rubber Boot MWTNP4798117  
$18.00
N.I. Transmission to Adapter O-Ring (700-R4, 4L60E, TH350, TH350C) MWT26064  
$1.91
Bearings
N.I. Bearing, Drive Sprocket (.940 in Wide) MWTHK5020  
$10.00
16 Bearing, Front Output Shaft (Rear) MTWSCE2416  
$11.22
23 Bearing, Input (.630 Wide) (94-Up) MWT6010N  
$20.66
23 Bearing, Input (.940 Wide) (87-94) MWTBD50-8  
$29.39
8 Bearing, Output (Rear) (2.833 in OD, .668 in Thick) (94-Up) MWT6207N  
$1.06
8 Bearing, Output (Rear) (2.439 in OD, .629 in Thick) (87-94). MWT6206N  
$9.33
9 Bearing, Output retainer Snap Ring (32 Spline Shaft) MWT1300-139-027  
$2.67
N.I. Bearing, Output Retainer Spline Sleeve (32 Spline Shaft) (Sonnax) MWT100420-02K  
$42.92
N.I. Bearing, Output,Retainer Spline Sleeve (27 Spline Shaft) (Sonnax) MWT100420-01K  
$42.92
N.I. Input Needle Assembly MWTDB59856  
$7.93
9 Output Bearing Retainer Snap Ring (27 Spline Shaft) MWT4446478  
$15.95
Forks
44 Fork, Insert Kit MWTNP15866  
$5.33
41 Fork, Mode (Iron) (Cast # 16196) MWTNV16267  
$103.33
N.I. Fork, Mode Cast# 17769 NP231D NP4746136  
$65.77
N.I. Fork, Pad NV4500, NP231 NP4219073  
$0.87
41 Fork, Range (Aluminum) (Cast # 17833). Has Pads MWTNP17833-r  
$37.69
N.I. Fork, Range Bushings (Plastic) MWT15547404  
$1.33
N.I. Fork,Pad NP241,NP231,NV4500 NP4167969  
$1.00
41 ode Fork, Iron (30T) (Cast 17769) (Late Dodge) MWTNP4746136  
$65.77
N.I. Range Slider and Hub MWTNP4796906  
$60.00
32 Key and Spring Kit (48T Only) MWTNP208K  
$13.33
32 Mode Assembly (Complete) (48T) MWTNV17915  
$86.66
N.I. Slider, Mode (48T) MWT17823-U  
$73.33
N.I. Slider, Mode (60T) MWTNP17773  
$97.31
Synchros
N.I. Assembly, Syncro NP241 DHD SOME NP231'S NP4746144A  
$200.00
31 Synchro, Mode (48T).small pre 1994 MWTNP4329526  
$22.00
31 Synchro, Mode (60T). 1994-Up MWTNP4745139  
$16.96
5 Pump Assembly MWTNV16209-U  
$60.00
18 Pump Screen (Filter) MWTNP4338943  
$5.33
28 Planet (6 Pinion) (used With .940 Wide Input MWT16550  
$335.95
26 Planet, Thrust Washer (Plastic) MWTNP4338908  
$4.00
N.I. Planet, Upgrade from 3 plant to 5 planet MWTNV17869  
$179.98
N.I. Bolt, Yoke Main Shaft Kit NP231 50-7905  
$366.67
Shafts
27 Input Shaft (Jeep) (21 Spline) (4.30 in) (used With .940 in Wide Input Bearing) MWT16758  
$103.93
27 Input Shaft (Jeep) (23 Spline) (5.30 in) (used With .940 in Wide Input Bearing) MWT17822  
$110.90
N.I. Jeep Slip Yoke Eliminator Short Shaft Conversion Kit: Includes Main Shaft, Yoke, Speedo, Small Parts and Extension Housing / Bearing Support (Bolt Yoke) MWTESYE231  
$320.00
N.I. Shaft, 96 Cherokee NP231 M/S With External Boot NP20362  
$166.67
27 Shaft, Input (Dodge) (23 Spline) (4.30 in) (used With .940 in Wide Input Bearing) MWTNP19061  
$193.39
27 Shaft, Input (Dodge) (23 Spline) (5.30 in) (used With .630 in Wide Input Bearing) MWTNP4796965  
$193.39
2 Shaft, Main (Dodge) (26 Spline) (18 3/8 in) MWT16353  
$264.94
Cases and Housing
N.I. Case, Front Half 10/17/89-90 NP231D 53008220  
$233.33
N.I. Case, Front Half NP231 83503572  
$193.33
21 Case, Half (Front) (Cast # 16118) MWT20357  
$217.97
3 Case, Half (Rear) (Cast #16117). MWT16721  
$135.98
N.I. Case, NP231 Dodge/GM Rear NP4741242  
$126.67
10 Extension Housing, Slip Yoke (32 Spline, 4 Bolt) MWT17477  
$83.93
N.I. Housing, 4 Bolt Extension NP231 NP241 NP4746150-U  
$151.95
11 Housing, Extension (1.630 in OD) (27 Spline) (GM) MWT35008  
$10.00
11 Housing, Extension (1.700 in OD) (26 and 27 Spline) Dodge MWT12501A  
$6.69
11 Housing, Extension (2.010 in OD) (32 Spline) (GM) MWT100408  
$10.00
10 Housing, Extension 5 3/4 in (Cast # 16356) MWTNP4338953  
$73.33
Miscellaneous Parts
38 Chain, (1.00 in Wide) 31 Links. MWTCL10-027  
$86.96
38 Chain, (1.25 in Wide) 31 Links. MWTCL10-022  
$96.98
1 Drive Sprocket (1.25 in Wide Chain) MWT19043  
$249.99
14 Driven Sprocket (1.25 in Wide Chain). MWT16619  
$297.97

Minimum order $25.00, Shipping and handling charges will be added.