National 4370N Transfer Case Output Shaft Seal - Rear

Transfer Case Output Shaft Seal for Jeep and Dodge

The National 4370N transfer case output shaft seal is built for rear transfer case sealing on select Jeep and Dodge 4WD applications. It uses a polyacrylate sealing material, a counter-clockwise spiral lip design, and Redicoat treatment to support consistent sealing performance in demanding driveline service.

Compatible With Jeep Grand Cherokee, Cherokee, Wrangler, Comanche, Wagoneer, Grand Wagoneer, CJ7, and Dodge Dakota and Durango applications that use the specified New Process transfer cases. The National 4370N is sized for the listed shaft, housing bore, and width dimensions to help maintain a proper seal at the transfer case output shaft.

• Part number: 4370N
• Transfer case output shaft seal for rear position applications
• Polyacrylate sealing material for durable oil sealing performance
• Counter-clockwise spiral lip design
• Redicoat surface treatment
• Series 4000 oil seal, Type 88
• Inside diameter: 1.503 in / 38.180 mm
• Outside diameter: 2.383 in / 60.530 mm
• Width: 0.420 in / 10.670 mm
• Housing bore: 2.376 in / 60.350 mm

Fitment Details

• Fits 1996-2004 Jeep Grand Cherokee, rear, Full Time 4WD with New Process 242J Transfer Case and 2 Speed - Transfer Case Input Shaft Pilot Bearing
• Fits 1997-2000 Dodge Dakota, rear, with New Process 231D Transfer Case; with Part Time 4WD; 2 Speed
• Fits 1998-1999 Dodge Durango, rear, with New Process 231D Transfer Case; with Part Time 4WD; 2 Speed
• Fits 1993-1998 Jeep Grand Cherokee, rear, Full Time 4WD with New Process 249J Transfer Case 2 Speed
• Fits 1987-1996 Jeep Cherokee, rear, Fits New Process 231J Transfer Case with Part Time 4WD and 2 Speed.
• Fits 1995-1996 Jeep Cherokee, rear, Full Time 4WD with New Process 242J Transfer Case and 2 Speed - Transfer Case Input Shaft Pilot Bearing
• Fits 1987-1993 Jeep Cherokee, rear, Full Time 4WD with New Process 242J Transfer Case and 2 Speed - Transfer Case Input Shaft Pilot Bearing
• Fits 1993-1996 Jeep Grand Cherokee, rear, Fits New Process 231J Transfer Case with Part Time 4WD and 2 Speed.
• Fits 1988-1995 Jeep Wrangler, rear, Fits New Process 231J Transfer Case with Part Time 4WD and 2 Speed.
• Fits 1994 Jeep Cherokee, rear, 1st Design; Full Time 4WD; with 0.42 (in) Width; with New Process 242J Transfer Case; 2.383 (in) Outside Diameter; 2 Speed
• Fits 1994 Jeep Grand Cherokee, rear, 1st Design; Full Time 4WD; with 0.42 (in) Width; with New Process 242J Transfer Case; 2.383 (in) Outside Diameter; 2 Speed
• Fits 1993 Jeep Grand Wagoneer, rear, Full Time 4WD with New Process 249J Transfer Case 2 Speed
• Fits 1993 Jeep Grand Wagoneer, rear, Full Time 4WD with New Process 242J Transfer Case and 2 Speed - Transfer Case Input Shaft Pilot Bearing
• Fits 1989-1991 Jeep Grand Wagoneer, rear, Full Time 4WD with New Process 242J Transfer Case and 2 Speed - Transfer Case Input Shaft Pilot Bearing
• Fits 1986-1992 Jeep Comanche, rear, Full Time 4WD with New Process 242J Transfer Case and 2 Speed - Transfer Case Input Shaft Pilot Bearing
• Fits 1986-1992 Jeep Comanche, rear, Fits New Process 231J Transfer Case with Part Time 4WD and 2 Speed.
• Fits 1986-1987 Jeep Comanche, rear, with New Process 207 Transfer Case; with Part Time 4WD; 2 Speed
• Fits 1984-1987 Jeep Wagoneer, rear, with New Process 207 Transfer Case; with Part Time 4WD; 2 Speed
• Fits 1987 Jeep Wrangler, rear, with New Process 207 Transfer Case; with Part Time 4WD; 2 Speed
• Fits 1984-1986 Jeep Cherokee, rear, with New Process 207 Transfer Case; with Part Time 4WD; 2 Speed
• Fits 1984-1986 Jeep CJ7, rear, with New Process 207 Transfer Case; with Part Time 4WD; 2 Speed

What This Seal Helps Address

• Transfer case fluid seepage at the output shaft
• Oil leakage around the rear transfer case seal area
• Contamination from worn or hardened sealing lips
• Seal wear related to driveline rotation and age
• Service issues on New Process 207, 231J, 231D, 242J, 249J, and related transfer case setups

Installation Notes and Tips

Verify the shaft diameter, housing bore, and seal width before installation. Clean the bore and shaft surface thoroughly, and inspect for grooves, scoring, or contamination that could affect sealing. This seal is specified for rear transfer case applications on the listed Jeep and Dodge vehicles, so confirm transfer case type and drivetrain configuration before ordering.

This part cross-references Dixie Electric Ltd 15047 for the same application.

Quality Assurance

National has supplied sealing products for more than 75 years and continues to develop sealing solutions for modern vehicle service needs. The 4370N reflects that focus with a polyacrylate sealing element, Redicoat treatment, and a spiral lip design intended for transfer case sealing applications.