Timken HA590577 Wheel Bearing and Hub Assembly - Rear

Timken Rear Hub Assembly for Mustang and GT

Timken HA590577 is a rear wheel bearing and hub assembly built for select Ford Mustang and Ford GT applications. It combines OE-developed testing, low runout, and precision bearing construction to support smooth operation, stable braking feel, and reliable wheel-speed signal performance.

• Rear wheel bearing and hub assembly for driven applications
• 32-spline design with a 4-bolt flange pattern
• 5 wheel studs and a 4.500 in. bolt circle diameter
• Low runout construction to reduce noise and vibration
• Premium seals with contamination control features
• ABS sensor tested for wheel-speed monitoring
• Precision bearing profiles and enhanced surface finishes

Built Around OE-Level Specifications

Timken HA590577 is engineered with OE-developed test standards that guide the design, materials, and manufacturing process of the hub bearing assembly. The result is a rear hub assembly with uniform internal geometry, reinforced sealing features, and bearing surfaces intended to support load capacity, bearing life, and fuel efficiency. This part number, HA590577, is a direct fit for 2015-2025 Ford Mustang rear applications, plus 2017-2021 Ford GT rear and 2022 Ford GT rear with aluminum wheels.

Cross-reference part numbers include MOOG 512517 and SKF BR930955 for the same application.

Common Problems This Part Addresses

• Rear wheel bearing noise or humming
• Wheel vibration caused by hub runout
• ABS wheel-speed signal faults
• Uneven braking feel from worn hub components
• Loose or worn rear hub mounting surfaces

Installation Notes and Tips

Verify rear fitment by year, model, and wheel configuration before installation. Confirm the 32-spline, 4-bolt flange, 5-stud, and 4.500 in. bolt-circle specifications match the original part. Inspect the mating surfaces, axle interface, and ABS connector condition during replacement to ensure proper seating and sensor operation on Ford Mustang and Ford GT rear applications.

Quality Assurance

Timken uses OE-developed testing and controlled manufacturing processes for hub bearing assemblies. Premium seals, precision bearing geometry, and 100% tested ABS sensors are part of the product’s quality-focused design.