Timken LM603019 Differential Race - Front or Rear

Timken LM603019 Differential Race Overview

The Timken LM603019 is a differential race built for tapered roller bearing applications that carry both radial and axial loads. It is used in driveline and axle service where precise bearing support matters, including Ford Explorer rear 8.8 in. IRS applications and Ford F-150 front differential service.

Timken LM603019 is engineered for compact packaging, stable load handling, and long service life in demanding axle and differential environments. This race is a direct-fit service component for select Ford, Lincoln, and Mercury applications.

Key Features

• Part number: LM603019
• Differential race for tapered roller bearing assemblies
• Outside diameter: 3.063 in. (77.79 mm)
• Width: 0.656 in. (16.67 mm)
• Bearing cup radius: 0.031 in. (0.80 mm)
• Supports radial and axial load management in axle and differential service
• Cross-reference: SKF LM603019

Detailed Description

Timken LM603019 is a differential race designed for tapered roller bearing setups in driveline and axle systems. Timken’s bearing engineering focuses on durability in compact spaces, and this race is sized for precise cup-to-cone operation in compatible differential assemblies. For service work on Ford Explorer rear 8.8 in. independent rear suspension, Ford Expedition rear 8.8 in. IRS, and Ford F-150 front differential applications, the LM603019 helps restore proper bearing support when the original race is worn or damaged.

Because tapered roller bearing components work as a matched system, the cone and cup should be replaced together to maintain reliability and service life. The LM603019 part number is also used in Lincoln Navigator front Dana/Spicer 35 axle manual transmission applications and Mercury Mountaineer rear 8.8 in. IRS service.

What This Part Helps Address

• Noise from a worn differential bearing race
• Excessive play in the pinion or differential bearing assembly
• Rough bearing operation caused by race wear or scoring
• Loss of proper load support in axle and differential service
• Service replacement for select Ford, Lincoln, and Mercury driveline applications

Installation Notes and Tips

Verify axle and differential configuration before ordering, since LM603019 is used in multiple front and rear applications with different notes. Confirm the bearing cup dimensions and inspect the matching cone for wear before installation. For best results, replace the inner cone and outer cup together, and follow the vehicle service manual for press-fit and preload procedures.

Quality Assurance

Timken is a recognized global manufacturer of tapered roller bearings, with engineering support focused on load capacity, speed, and service life. The LM603019 follows Timken’s dimensional standards for differential bearing service and is built for consistent fit in the listed applications.