Timken 30303 Steering Knuckle Bearing - Front or Front Outer

Timken 30303 Steering Knuckle Bearing

The Timken 30303 steering knuckle bearing is a tapered roller bearing assembly for front suspension and steering applications. It is built for Toyota trucks and SUVs that need reliable support for combined radial and axial loads in a compact bearing design.

Key Features

• Tapered roller bearing construction for load handling in steering knuckle service
• Separates into inner cone and outer cup rings for serviceable bearing assembly
• Supports both radial and axial loads
• Engineered for durability in compact packaging
• Timken bearing design for front-end applications

Detailed Description

Timken 30303 is a front steering knuckle bearing used in select Toyota 4Runner, Land Cruiser, Pickup, and Van applications. This bearing is a direct-fit service part for vehicles with 9.25 in. or 9.5 in. ring gear configurations, including Fits 1984-1990 Toyota 4Runner, front; Fits 1980-1990 Toyota Land Cruiser, front; Fits 1980-1990 Toyota Pickup, front; and Fits 1987-1989 Toyota Van, front. This part cross-references SKF BR30303 for the same application.

Common Repair Uses

• Front wheel end noise from worn bearing surfaces
• Excessive play in the steering knuckle area
• Rough rotation or binding at the front hub assembly
• Wear from high-load front suspension service
• Replacement during front-end bearing service on Toyota 4Runner, Land Cruiser, Pickup, or Van

Installation Notes and Tips

Verify ring gear size and front axle application before installation. Clean and inspect the bearing seat, cone, and cup surfaces during service, and follow the vehicle service manual for proper bearing preload and assembly procedures. Timken 30303 is a cone-and-cup style tapered roller bearing, so correct orientation and seating are important for long-term performance.

Quality Assurance

Timken is known for tapered roller bearing engineering and produces components for demanding load conditions. The 30303 bearing is built to manage radial and axial forces in a compact front steering knuckle application.