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 YJ transfer case shifter, AX5  5spd.  OEM

Jeep Wrangler YJ transfer case shifter, AX5 5spd. OEM

$89.99
12C4596 97 98 99 JEEP WRANGLER Transfer Case NP231 349

12C4596 97 98 99 JEEP WRANGLER Transfer Case NP231 349

$600.00
Jeep Cherokee Wrangler (1987-1996) NP231 Transfer Case Master Overhaul Kit

Jeep Cherokee Wrangler (1987-1996) NP231 Transfer Case Master Overhaul Kit

$139.99
Jeep Wrangler & Cherokee ('88-01) NP231 Transfer Case Electric Vacuum Switch

Jeep Wrangler & Cherokee ('88-01) NP231 Transfer Case Electric Vacuum Switch

$19.99
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 CHEROKEE NP231 NP-231 TRANSFER CASE GEAR SHIFT CONTROL ROD NEW OEM

JEEP WRANGLER CHEROKEE NP231 NP-231 TRANSFER CASE GEAR SHIFT CONTROL ROD NEW OEM

$49.99
Rubicon Express RE2100 Transfer Case Lowering Kit TJ Wrangler (TJ) Wrangler (YJ)

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

$44.99
1989 89 1990 90 Jeep Wrangler Transfer Case 4 Cyl NP231

1989 89 1990 90 Jeep Wrangler Transfer Case 4 Cyl NP231

$432.00
Jeep Wrangler YJ NP231 Transfercase Shift Range Collar Gear 87-95 Transfer Case

Jeep Wrangler YJ NP231 Transfercase Shift Range Collar Gear 87-95 Transfer Case

$34.95
Jeep Wrangler YJ NP231 Transfercase Shift Drive Collar Gear 87-95 Transfer Case

Jeep Wrangler YJ NP231 Transfercase Shift Drive Collar Gear 87-95 Transfer Case

$34.95
Transfer Case Gasket & Seal Kit NP231 JEEP (except Liberty) 1987-2006 (TSK-249)

Transfer Case Gasket & Seal Kit NP231 JEEP (except Liberty) 1987-2006 (TSK-249)

$24.75
JEEP WRANGLER MANUAL SHIFT TRANSFER CASE 91-92 NP231 APPROX 152 K MILES

JEEP WRANGLER MANUAL SHIFT TRANSFER CASE 91-92 NP231 APPROX 152 K MILES

$731.25
JEEP WRANGLER MANUAL SHIFT TRANSFER CASE 91-92 NP231

JEEP WRANGLER MANUAL SHIFT TRANSFER CASE 91-92 NP231

$731.25
96-02 JEEP WRANGLER TJ CHEROKEE XJ 4.0 REBUILT 6 CYL NP231 T-CASE TRANSFER CASE

96-02 JEEP WRANGLER TJ CHEROKEE XJ 4.0 REBUILT 6 CYL NP231 T-CASE TRANSFER CASE

$800.00
96-04 JEEP WRANGLER TJ CHEROKEE XJ 2.5L REBUILT 4 CYL NP231 T-CASE TRANSFER CASE

96-04 JEEP WRANGLER TJ CHEROKEE XJ 2.5L REBUILT 4 CYL NP231 T-CASE TRANSFER CASE

$800.00
87-95 JEEP WRANGLER YJ CHEROKEE XJ 4.0 REBUILT 6 CYL NP242 T-CASE TRANSFER CASE

87-95 JEEP WRANGLER YJ CHEROKEE XJ 4.0 REBUILT 6 CYL NP242 T-CASE TRANSFER CASE

$950.00
87-95 JEEP WRANGLER YJ CHEROKEE XJ 2.5 REBUILT 4 CYL NP242 T-CASE TRANSFER CASE

87-95 JEEP WRANGLER YJ CHEROKEE XJ 2.5 REBUILT 4 CYL NP242 T-CASE TRANSFER CASE

$950.00
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 XJ Cherokee YJ Wrangler NP207 & 231C Transfer Case Chain

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

$121.99
★ Jeep YJ 87-95 Wrangler 2.5 TRANSFER CASE SHIFTER | Shift 4WD 4 Cylinder ★

★ Jeep YJ 87-95 Wrangler 2.5 TRANSFER CASE SHIFTER | Shift 4WD 4 Cylinder ★

$52.00

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