Autoround Front Wheel Hub Bearing Assembly Pair 513121 — 5-Lug w/ ABS, Direct-Fit for GM Front Axles

Autoround 513121 is a direct-fit front wheel hub bearing assembly set (pair) engineered for 5-lug ABS-equipped Buick, Chevy, Pontiac and Cadillac models, delivering a ready-to-install replacement that meets OEM dimensions.

If your vehicle shows wheel noise, rough steering feel, or an illuminated ABS/traction light tied to a wheel speed sensor, a worn hub bearing assembly can be the cause. This Autoround paired kit is designed as a one-piece replacement for front applications on many FWD/AWD cars and some rear AWD positions, simplifying repair with the correct flange and bolt-circle geometry already integrated.

Which vehicles and positions does this hub assembly fit?

This Autoround 513121 assembly covers a wide range of late-1990s through early-2010s GM models across Buick, Chevrolet, Pontiac, Oldsmobile and Cadillac lines. It is specified for front-wheel installations on FWD and AWD vehicles and can serve rear positions on certain AWD applications when the same fitment is required.

• Compatible models include Buick Regal, LeSabre, LaCrosse, Century, Rendezvous and more.
• Chevrolet fitments include Impala, Monte Carlo and select full-size minivans.
• Also fits Pontiac Grand Prix, Bonneville, Aztek, and several Oldsmobile and Cadillac models.
• Designed for 5-lug hubs with ABS speed-sensor integration.

How does this hub assembly match OEM specifications?

Autoround units are manufactured to replicate OEM geometry and mounting points so the part aligns with existing suspension and braking components. Dimension details such as flange diameter, offset and bolt circle are matched to ensure wheel alignment and bearing preload remain correct after installation.

• Flange diameter: 5.73 inches for correct wheel seating.
• Flange offset: 1.65 inches to preserve track and clearance.
• Bolt circle diameter: 4.53 inches to fit 5-lug patterns.
• Includes ABS-friendly tone ring and sensor readiness for modern systems.

What performance and quality checks are included?

Each Autoround hub bearing assembly undergoes validation to meet or exceed common OEM performance benchmarks for durability and noise control. The design incorporates sealed bearings and corrosion-resistant finishes to extend service life under typical road and weather exposure.

• Sealed bearing construction to retain lubricant and exclude contaminants.
• Quality-tested to align with OEM performance expectations.
• Corrosion-resistant surfaces for longer-term reliability.
• Sold as a pair to ensure balanced handling and uniform wear.

How straightforward is installation and what support is offered?

Because the bearing and hub are pre-assembled, installation reduces press-fitting steps and can be completed with standard wheel-hub service tools. Autoround provides a three-year quality assurance period and customer support for fitment or warranty questions through their service channel.

• Comes as a complete, ready-to-install hub and bearing assembly.
• Fits into existing knuckle and brake components without machining.
• Three-year QA backed support from Autoround customer service.
• Ideal for DIY mechanics and professional installers.

Who is this for: This Autoround 513121 pair is suited to owners and technicians replacing worn or noisy front wheel hub bearings on compatible GM vehicles who want a direct-fit, ABS-ready assembly. It's also a practical choice for shops seeking a reliably dimensioned aftermarket hub that minimizes installation time and restores secure wheel mounting on 5-lug applications.