National JLM603013Z Wheel Bearing Race - Front Inner or Front Outer

National JLM603013Z Wheel Bearing Race

The National JLM603013Z is a taper bearing cup for front wheel bearing service on select Jeep applications. It uses premium-grade steel and a crowned raceway profile to promote even load distribution across the bearing surface.

Key Features

• Wheel bearing race, also described as a taper bearing cup
• Premium-grade steel construction for bearing service durability
• Crowned raceway helps distribute load evenly
• Cup bore: 3.0709 in. (78.0000 mm)
• Cup length: 0.5906 in. (15.0000 mm)
• Cup radius: 0.0906 in. (2.3000 mm)
• Part number: JLM603013Z

Detailed Description

National JLM603013Z is a front wheel bearing race used in tapered roller bearing assemblies for Jeep Cherokee, Jeep Comanche, Jeep Wagoneer, and Jeep Wrangler front inner and front outer positions. The cup bore, length, and radius dimensions are specified for accurate bearing fitment, and the crowned raceway is engineered to support consistent contact across the rolling elements. This part cross-references 53000238 and JLM603013-Z for the same application.

For Jeep Cherokee front inner and front outer service, Jeep Comanche front inner and front outer service, and Jeep Wagoneer front inner and front outer service, this National JLM603013Z cup provides the dimensional match needed for proper wheel bearing setup. It also fits Jeep Wrangler front inner and front outer applications within the listed model years.

What It Is Used For

• Replacing a worn or pitted front wheel bearing race
• Restoring correct bearing preload and rolling contact
• Addressing noise from damaged tapered bearing surfaces
• Correcting rough wheel rotation caused by race wear
• Supporting front hub and spindle bearing service on listed Jeep models

Installation Notes and Tips

Verify the cup bore, length, and radius against the removed part before installation. Press the race into the hub or bearing housing using proper bearing service tools to avoid damaging the raceway. Clean the bearing surfaces thoroughly and inspect the matching rollers or cones for wear before reassembly. Confirm whether the vehicle uses the front inner or front outer position listed in the fitment data.

Quality Assurance

National manufactures this taper bearing cup with premium-grade steel and a crowned raceway profile for controlled load distribution. The JLM603013Z is built to the dimensional specifications shown above for accurate wheel bearing service on the listed Jeep applications.

Compatible Vehicles

• Fits 1984-1989 Jeep Cherokee, front inner.
• Fits 1984-1989 Jeep Cherokee, front outer.
• Fits 1986-1989 Jeep Comanche, front inner.
• Fits 1986-1989 Jeep Comanche, front outer.
• Fits 1984-1989 Jeep Wagoneer, front inner.
• Fits 1984-1989 Jeep Wagoneer, front outer.
• Fits 1987-1989 Jeep Wrangler, front outer.
• Fits 1987-1989 Jeep Wrangler, front inner.
• Fits 1986 Jeep Cherokee, front outer, 1st Design; 3.07 in. cup bore; 0.590 in. cup length.
• Fits 1986 Jeep Cherokee, front inner, 1st Design; 3.07 in. cup bore; 0.590 in. cup length.
• Fits 1986 Jeep Comanche, front outer, 1st Design; 3.07 in. cup bore; 0.590 in. cup length.
• Fits 1986 Jeep Comanche, front inner, 1st Design; 3.07 in. cup bore; 0.590 in. cup length.