Timken 513188 Wheel Bearing and Hub Assembly - Front

Timken 513188 Front Hub Assembly

Timken 513188 is a front wheel bearing and hub assembly built for driven applications that need stable wheel support, low runout, and consistent ABS signal performance. It is a direct-fit option for select Chevrolet Trailblazer, GMC Envoy, and related GM platform vehicles.

Key Features

• OE-developed testing used to control design, materials, and manufacturing process
• Low runout construction to reduce noise and vibration and support braking performance
• Premium seals with reinforced outer case, ribbed rubber inner diameter, contamination exclusion system, and vent holes
• Precision-profile bearings with uniform internal geometry and enhanced surface finishes
• 100% tested ABS sensor for wheel speed monitoring
• Driven front hub assembly with 27 splines, 6 wheel studs, and 5.000-inch bolt circle diameter

Detailed Description

Timken 513188 is engineered as a front wheel bearing and hub assembly for vehicles that use a driven front hub. The assembly features a 3-bolt flange pattern, 3.621-inch hub pilot diameter, 5.935-inch flange diameter, and 1.850-inch flange offset, along with a 77.78 mm wheel pilot diameter and 78.98 mm brake pilot diameter. These dimensions support proper wheel and brake alignment on the vehicle platform.

This part cross-references SKF BR930470 for the same application. Timken 513188 is a direct replacement choice for front hub service on Chevrolet Trailblazer, GMC Envoy, Saab 9-7x, Isuzu Ascender, Buick Rainier, Chevrolet SSR, Trailblazer EXT, Envoy XL, Envoy XUV, and Oldsmobile Bravada applications where the listed fitment matches.

What It Helps Address

• Wheel bearing noise from worn or rough hub components
• Front-end vibration caused by excessive hub runout
• ABS warning light concerns related to wheel speed signal issues
• Uneven braking feel linked to hub or bearing wear
• Loose or unstable wheel support at the front axle

Installation Notes and Tips

Verify spline count, bolt circle diameter, pilot diameters, and front position before installation. Confirm the vehicle uses the listed driven front hub configuration and inspect the mating surfaces, axle interface, and brake components for wear or damage before assembly. Proper torque procedures and clean mounting surfaces help maintain hub alignment and sensor performance.

Quality Assurance

Timken uses OE-developed testing to control the design, materials, and manufacturing process behind this hub bearing assembly. The bearing geometry, seal design, and ABS sensor testing are focused on consistent fit, reduced contamination entry, and dependable wheel speed monitoring.