Transfer Cases

The Wrangler YJ was produced with two different transfer cases: the New Process 207 (NP207) and the New Process 231 (NP231). The 1987 Wrangler YJ came with the NP207 primarily because there was a surplus of them when Chrysler took over the Jeep brand. Up until this point, the NP207 was used exclusively in the 1984-87 Cherokee XJ. From 1988 to 1995, the Wrangler YJ was outfitted with the NP231 transfer case.

NP207 Transfer CaseThe NP207 has an aluminum case. It is similar in appearance to the NP231, but should have a tag (facing the rear of the vehicle) that's stamped New Process Gear Model 207. The NP207 is chain driven. Models mated to a manual transmission have a 21-spline input shaft. Models mated to an automatic transmission have a 23-spline input shaft. The output for the front driveshaft is on the driver's side. The ratio for high-range is a direct drive 1:1 while low-range is 2.61:1. This transfer case is unpopular due to its weakness when used in modified Wranglers for off-road. Many of the NP207 transfer cases have been swapped out in favor of the NP231 transfer case.

NP231 Transfer CaseThe NP231 has an aluminum case. Conversely, it is similar in appearance to the NP207, but should have a tag (facing the rear of the vehicle) that's stamped New Process Gear Model 231. The NP231 is chain driven. Models mated to the Peugeot BA-10 or Aisin-Warner AX-5 transmission have a 21-spline input shaft. Models mated to the Aisin-Warner AX-15 transmission have a 23-spline input shaft. The output for the front driveshaft is on the driver's side. The ratio for high-range is a direct drive 1:1 while low-range is 2.72:1. This transfer case is widely supported in the off-road community due to its strength and ease for upgrading it with parts made by many third-party companies.

Omix-Ada 18612.02 Transfer Case Drive Chain Fits Cherokee (XJ) Wrangler (YJ)

Omix-Ada 18612.02 Transfer Case Drive Chain Fits Cherokee (XJ) Wrangler (YJ)

$128.30
Rubicon Express RE2100 Transfer Case Lowering Kit TJ Wrangler (TJ) Wrangler (YJ)

Rubicon Express RE2100 Transfer Case Lowering Kit TJ Wrangler (TJ) Wrangler (YJ)

$51.91
97-02 Jeep Wrangler TJ 6 cylinder 4.0 NP 231 J transfer case shifter handle, TJ3

97-02 Jeep Wrangler TJ 6 cylinder 4.0 NP 231 J transfer case shifter handle, TJ3

$19.95
Transfer Case, NP 231 J, 21 Spline, 4cyl 5-Speed, Jeep Wrangler YJ - 1987-1995

Transfer Case, NP 231 J, 21 Spline, 4cyl 5-Speed, Jeep Wrangler YJ - 1987-1995

$280.00
Transfer Case Slip-Yoke Eliminator Kit 87-06 Wrangler with NP231 Transfer Case

Transfer Case Slip-Yoke Eliminator Kit 87-06 Wrangler with NP231 Transfer Case

$210.99
Pro Comp Suspension TailShaft Conversion Kit 87-95 Wrangler YJ Transfer Case ic

Pro Comp Suspension TailShaft Conversion Kit 87-95 Wrangler YJ Transfer Case ic

$335.21
JEEP WRANGLER YJ CHEROKEE XJ TRANSFER CASE VACUUM SWITCH SEE DESC

JEEP WRANGLER YJ CHEROKEE XJ TRANSFER CASE VACUUM SWITCH SEE DESC

$32.90
Transfer Case, Reman, with SYE Kit NP231J 231 Jeep Wrangler lift TJ LJ

Transfer Case, Reman, with SYE Kit NP231J 231 Jeep Wrangler lift TJ LJ

$975.00
Transfer Case, Remanufactured Transfercase NP231J HD 231 Jeep Wrangler TJ LIFT

Transfer Case, Remanufactured Transfercase NP231J HD 231 Jeep Wrangler TJ LIFT

$775.00
Crown Automotive 83501389 Transfer Case Output Seal Cherokee (XJ) Wrangler (YJ)

Crown Automotive 83501389 Transfer Case Output Seal Cherokee (XJ) Wrangler (YJ)

$17.64
IH INTERNATIONAL SCOUT II 1980 DANA 300 TRANSFER CASE JEEP CJ YJ XJ WRANGLER

IH INTERNATIONAL SCOUT II 1980 DANA 300 TRANSFER CASE JEEP CJ YJ XJ WRANGLER

$699.99
Wrangler YJ Transfer Case Vacuum Harness 53002033 OEM Mopar 231 87A-K Models

Wrangler YJ Transfer Case Vacuum Harness 53002033 OEM Mopar 231 87A-K Models

$54.99
4x4 shifter Jeep Wrangler 231 transfer case YJ 2.5 AX5 5 speed trans stick 87-95

4x4 shifter Jeep Wrangler 231 transfer case YJ 2.5 AX5 5 speed trans stick 87-95

$60.00
Jeep NP231 1997-06 Wrangler TJ Cherokee XJ Transfer Case Electric Vacuum Switch

Jeep NP231 1997-06 Wrangler TJ Cherokee XJ Transfer Case Electric Vacuum Switch

$22.99
Jeep Wrangler TJ NP231 Transfercase Drive Shift Collar  97-06 Transfer Case

Jeep Wrangler TJ NP231 Transfercase Drive Shift Collar 97-06 Transfer Case

$34.95
Jeep Wrangler TJ NP231 Transfercase Shift Range Collar Gear 97-06 Transfer Case

Jeep Wrangler TJ NP231 Transfercase Shift Range Collar Gear 97-06 Transfer Case

$34.95
18676.60 Rugged Ridge NP231 Transfer Case SYE Kit Jeep TJ YJ Wrangler 1988-2006

18676.60 Rugged Ridge NP231 Transfer Case SYE Kit Jeep TJ YJ Wrangler 1988-2006

$210.99
Omix-Ada 18676.29 Transfer Case Output Seal Fits 87-95 Wrangler (YJ)

Omix-Ada 18676.29 Transfer Case Output Seal Fits 87-95 Wrangler (YJ)

$15.28
Omix-Ada 18676.29 Transfer Case Output Seal Fits 87-95 Wrangler (YJ)

Omix-Ada 18676.29 Transfer Case Output Seal Fits 87-95 Wrangler (YJ)

$18.13
Omix-Ada 18676.29 Transfer Case Output Seal Fits 87-95 Wrangler (YJ)

Omix-Ada 18676.29 Transfer Case Output Seal Fits 87-95 Wrangler (YJ)

$16.99

« Previous12345