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1994-1997 Dodge NP241DHD Transfer Case

Shop now for Parts, Tools, and Oil specific to 1994-1997 Dodge Ram NP241DHD Transfer Cases in Ram 2500 and Ram 3500 4x4 trucks. In stock availability on most items for quick shipping.

The NP241DHD differs considerably from earlier NP241D transfer cases used from 1987 to 1993 and the second generation NV241D introduced for the 2002 Ram 1500. Starting in 1994, the stock Ram 2500 transfer case was the NV241DLD (Dodge Light Duty). Optional on the Ram 2500 and standard on the Ram 3500 was the NV241DHD (Dodge Heavy Duty). There were numerous design changes in the NP241DLD/DHD during its production life; making part(s) selection a bit tricky without the round transfer case build tag affixed to the rear case half.

Despite the many assembly variations, there are a few common characteristics shared by both DLD and DHD models. All these cases will have a slip yoke rear output, left drive chain front output, with CV flange and mechanical shift engagement. The cases will also have a 6-gear planetary 2.72:1 ratio low range, and a transfer case mounted vacuum switch, which controls the front axle disconnect system.

All gas V8 trucks with a manual transmissions and all automatic trucks regardless of their engine is a 23 spline input.  Whereas, all manual transmission trucks with a Cummins Diesel or Gas V10 engine will have a 29 spline input shaft. The NP241DHD has a 1-1/2" wide chain, a bearing supported planetary, and a SAE 6 Bolt PTO opening on the right side. Almost all 1994 to 1996 NP241DHD transfer cases, plus perhaps few a 1997 models might have a two-piece tailshaft housing and a 1-3/8" diameter 32 spline output shaft. A stronger version of the NP241DHD is with a 1-5/8" diameter 31 spline output shaft, which was phased in starting with the late 1996 and early 1997 model year Ram of 2500 and 3500 Ram trucks. The upgraded NP241DHD transfer cases will be found in most 1997 trucks and all 1998-2002 models. These transfer cases have a one-piece tail housing and take a slip yoke that is about 14% larger in diameter than the previous slip yokes. The 1997 and earlier models have a mechanical speedometer output that drives an external electronic sender. Again, whereas, the 1998 to 2002 models do not have any provisions for a speedometer because the speedometer signal for these years is generated by the ABS sensor on the rear axle. If you are trying to swap parts between cases you will find some parts are interchangeable between the DLD and DHD models for a given year, but many are not. You also have to watch for variations within 1994-1997 model years as input shafts and the cut of the planetary teeth often changed within each assembly.

1994-1997 Dodge NP241DHD Transfer Case

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