Moog 515091 Wheel Bearing and Hub Assembly - Front Left

Front Left Wheel Bearing Hub Assembly

Restore smooth front-end operation with the MOOG 515091 wheel bearing and hub assembly for select Chevrolet Astro and GMC Safari models. This front left hub assembly is built with application-specific dimensions and an integrated ABS sensor to support accurate wheel speed signal delivery.

Compatible with 2003-2005 Chevrolet Astro, front left, and 2003-2005 GMC Safari, front left, the MOOG 515091 is a direct-fit driveline and axle service part for vehicles using a 6-lug, 5.5-inch bolt circle hub design.

Key Features

• Wheel bearing and hub assembly for front left service
• Integrated anti-lock brake sensor included
• 33-spline hub configuration
• 6 wheel studs with 3 flange bolt holes
• Modified flange shape with 49.800 flange offset
• Wheel pilot diameter: 77.900 mm
• Brake pilot diameter: 78.400 mm
• Hub pilot diameter: 99.300 mm
• Flange diameter: 180.000 mm
• Bolt circle diameter: 139.700 mm / 5.500 in

Product Details

MOOG 515091 is engineered as a wheel bearing and hub assembly for the front left position on 2003-2005 Chevrolet Astro and 2003-2005 GMC Safari models. MOOG focuses on design updates that improve service life and make installation and replacement more straightforward, which is why this hub assembly is a practical choice for driveline and axle repair work. This part cross-references SKF BR930670 and Timken SP550310 for the same application.

Common Repair Symptoms

• Front wheel bearing noise or growling from the left side
• ABS warning light related to wheel speed sensor signal issues
• Wheel play or looseness at the hub
• Uneven front-end vibration during driving
• Hub wear affecting braking or steering feel

Installation Notes and Tips

Verify spline count, flange dimensions, bolt circle, and sensor configuration before installation. Confirm the front left position and match the hub to the vehicle’s ABS-equipped setup. Clean the mounting surface thoroughly and inspect related components such as the axle, knuckle, and brake hardware during replacement.

Quality Assurance

MOOG is known in the chassis and steering category for continuously refining replacement parts to improve durability and simplify service. The 515091 hub assembly reflects that approach with application-specific fitment and dimensional accuracy for select Chevrolet Astro and GMC Safari front left applications.