National JLM104948 Transfer Case Output Shaft Bearing

National JLM104948 Transfer Case Output Shaft Bearing

National JLM104948 is a taper bearing cone built with premium-grade steel for transfer case and driveline service. Its crowned raceways and rollers promote even load distribution, helping maintain smooth operation in demanding rear, front, and transfer case applications across a wide range of vehicles.

Key Features

• Taper bearing cone for transfer case output shaft service
• Premium-grade steel construction
• Crowned raceways and rollers for even load distribution
• Cone bore: 1.9685 in. / 50.0000 mm
• Cone length: 0.8465 in. / 21.5010 mm
• Cone radius: 0.1200 in. / 3.0480 mm
• Part number: JLM104948

Detailed Description

This National transfer case output shaft bearing is specified as a taper bearing cone and is used in driveline assemblies where precise support and consistent rotation matter. The JLM104948 dimensions make it a direct-reference service part for applications that call for a 50 mm cone bore and matching taper geometry. This part cross-references Spicer 700097 and Raybestos Brakes 981001 for the same application.

Vehicle coverage includes long-tail applications such as Fits 1999-2004 Ford F-250 Super Duty, front; Fits 1994-1998 Land Rover Discovery, rear forward; Fits 1975-1997 Toyota Land Cruiser, rear inner; and Fits 2006-2009 BMW 750Li, rear. It also appears in service listings for Chevrolet Caprice, Pontiac G8, BMW M3, and Ford Excursion driveline configurations. National JLM104948 is a practical match when replacing a worn transfer case output shaft bearing in compatible axle and differential assemblies.

What It Helps Address

• Noise from a worn transfer case or driveline bearing
• Excess shaft play caused by bearing wear
• Rough rotation in the output shaft support area
• Vibration related to degraded taper bearing surfaces
• Service replacement for specified front, rear, and rear-forward applications

Installation Notes and Tips

Verify cone bore, cone length, and application notes before installation. Confirm the vehicle’s axle, differential, or transfer case configuration, since fitment varies by ring gear size, axle type, and position. For best results, inspect the mating race and surrounding components for wear before installing JLM104948.

Quality Assurance

National manufactures this bearing cone with premium-grade steel and crowned rolling surfaces to support even load distribution in service. Part number JLM104948 is built to the dimensional and application requirements listed for the confirmed fitments above.