Timken SP450303 Wheel Bearing and Hub Assembly - Front

Timken Front Wheel Bearing Hub Assembly

Timken SP450303 is a front wheel bearing and hub assembly for select Cadillac, Chevrolet, and GMC trucks and SUVs. It is built for non-driven front applications and uses OE-developed testing, precision bearing geometry, and low-runout construction to support smooth operation, reduced noise, and stable braking performance.

Key Features

• Front wheel bearing and hub assembly for non-driven applications
• Low runout construction helps reduce wheel noise and vibration
• Premium seals use reinforced and contamination-resistant features to support seal life
• Precision bearing profiles and uniform internal geometry help increase load-carrying capacity
• Enhanced surface finishes support bearing life and fuel efficiency
• ABS sensor is 100% tested to monitor wheel speed for anti-lock braking systems
• Flange bolt hole quantity: 3; wheel stud quantity: 6; bolt circle diameter: 5.500 in. / 139.70 mm
• Wheel pilot diameter: 3.063 in. / 77.81 mm; hub pilot diameter: 3.913 in. / 99.34 mm

Detailed Description

Timken SP450303 is engineered as a direct-fit front hub bearing assembly for 2007-2014 Cadillac Escalade, 2008-2014 Cadillac Escalade ESV, 2007-2013 Chevrolet Avalanche, 2007-2013 Chevrolet Silverado 1500 New Style Models, 2007-2013 Chevrolet Suburban 1500 New Style Models, 2007-2013 Chevrolet Tahoe New Style Models, 2014 Chevrolet Suburban 1500, 2014 Chevrolet Tahoe, 2007-2013 GMC Sierra 1500 New Style Models, 2007-2013 GMC Yukon, 2007-2013 GMC Yukon XL 1500 New Style Models, 2014 GMC Yukon, and 2014 GMC Yukon XL 1500. The assembly is designed around OE-developed validation methods and uses premium bearings, advanced sealing, and a tested ABS sensor to support consistent wheel-speed monitoring and dependable front-end performance. This part cross-references SKF BR930693 for the same application.

What It Helps Address

• Front wheel bearing noise during driving or turning
• Wheel vibration caused by excessive hub runout
• ABS warning light concerns related to wheel-speed signal issues
• Brake feel changes linked to hub instability
• Premature bearing wear from contamination or seal failure

Installation Notes and Tips

Verify front axle application, bolt pattern, pilot diameters, and ABS sensor configuration before installation. Confirm the vehicle is a non-driven front application and match the part to the exact model year and trim notes, including Silverado 1500, Suburban 1500, Tahoe, Sierra 1500, Yukon, and Yukon XL 1500 New Style Models where listed. Clean the mounting surfaces thoroughly and inspect related suspension and brake components for wear before installing Timken SP450303.

Quality Assurance

Timken manufactures hub bearing assemblies using OE-developed test procedures that control design, materials, and production processes. The result is a front hub assembly built to support consistent performance, accurate ABS wheel-speed monitoring, and long service life in demanding truck and SUV applications.