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.

JEEP WRANGLER TJ 98-06 TRANSFER CASE SPEED SPEEDOMETER SENSOR FLAT PIN DRIVE

JEEP WRANGLER TJ 98-06 TRANSFER CASE SPEED SPEEDOMETER SENSOR FLAT PIN DRIVE

$22.50
JEEP WRANGLER TJ 93-95 97 TRANSFER CASE SPEED SPEEDOMETER SENSOR ROUND PIN DRIVE

JEEP WRANGLER TJ 93-95 97 TRANSFER CASE SPEED SPEEDOMETER SENSOR ROUND PIN DRIVE

$22.50
Jeep Transfer case 4wd shifter stock Wrangler YJ

Jeep Transfer case 4wd shifter stock Wrangler YJ

$40.00
Jeep Slip Yoke NP 231 Transfer Case High Angle fits 87-95 (YJ) Wrangler

Jeep Slip Yoke NP 231 Transfer Case High Angle fits 87-95 (YJ) Wrangler

$49.00
18886.90 NP231 Transfer Case Gasket Jeep Wrangler Cherokee 84-02 With AX4 AX5

18886.90 NP231 Transfer Case Gasket Jeep Wrangler Cherokee 84-02 With AX4 AX5

$2.48
Omix-Ada 18676.18 Transfer Case Range Shift Fork Bushing 87-93 Wrangler (YJ)

Omix-Ada 18676.18 Transfer Case Range Shift Fork Bushing 87-93 Wrangler (YJ)

$14.99
★ Jeep YJ 87-90 Wrangler - 231 J TRANSFER CASE | 272 ★

★ Jeep YJ 87-90 Wrangler - 231 J TRANSFER CASE | 272 ★

$400.00
OEM Jeep Wrangler YJ Transfer Case Shifter Shift Knob 87-95

OEM Jeep Wrangler YJ Transfer Case Shifter Shift Knob 87-95

$9.95
89 90 JEEP WRANGLER Transfer Case model NP 231 6 cyl MT 0110161

89 90 JEEP WRANGLER Transfer Case model NP 231 6 cyl MT 0110161

$400.00
Trailmaster JYTCS Transfer Case Drop Bracket TJ Wrangler (TJ) Wrangler (YJ)

Trailmaster JYTCS Transfer Case Drop Bracket TJ Wrangler (TJ) Wrangler (YJ)

$58.79
AX15 Transmission transfer case assembly Shifter, Jeep Wrangler YJ, 1987-1995

AX15 Transmission transfer case assembly Shifter, Jeep Wrangler YJ, 1987-1995

$800.00
Jeep Wrangler TJ Transfercase NP231 5sp 2.5L Manual 97-02 4 cylinder 98 transfer

Jeep Wrangler TJ Transfercase NP231 5sp 2.5L Manual 97-02 4 cylinder 98 transfer

$299.95
Jeep Cherokee Wrangler 1987-1996 NP231 Transfer Case Replacement Chain

Jeep Cherokee Wrangler 1987-1996 NP231 Transfer Case Replacement Chain

$119.99
Jeep XJ Cherokee YJ Wrangler NP207 & 231C Transfer Case Chain

Jeep XJ Cherokee YJ Wrangler NP207 & 231C Transfer Case Chain

$121.99
18612.02 Omix-ADA Transfer Case Chain (NP207) JEEP Cherokee Wrangler 1984-1987

18612.02 Omix-ADA Transfer Case Chain (NP207) JEEP Cherokee Wrangler 1984-1987

$93.98
87-90 4x4 shifter Jeep Wrangler 231 transfer case YJ 5 speed trans stick MANUAL

87-90 4x4 shifter Jeep Wrangler 231 transfer case YJ 5 speed trans stick MANUAL

$59.99
Jeep Wrangler YJ Cherokee XJ Vacuum Motor Kit Replacement Kit for Transfer Case

Jeep Wrangler YJ Cherokee XJ Vacuum Motor Kit Replacement Kit for Transfer Case

$99.99
Jeep Wrangler YJ Cherokee XJ Vacuum Motor Replacement Kit for Transfer Case

Jeep Wrangler YJ Cherokee XJ Vacuum Motor Replacement Kit for Transfer Case

$89.99
Rubicon Express RE2100 Transfer Case Lowering Kit TJ Wrangler (TJ) Wrangler (YJ)

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

$58.99
Trailmaster JYTCS Transfer Case Drop Bracket TJ Wrangler (TJ) Wrangler (YJ)

Trailmaster JYTCS Transfer Case Drop Bracket TJ Wrangler (TJ) Wrangler (YJ)

$97.84

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