ECCPP Front Wheel Hub and Bearing Assembly 513121 — Front Axle, ABS-Ready, 5-Lug

ECCPP 513121 is a direct-fit front wheel hub and bearing assembly engineered to replace the factory unit on compatible Buick, Cadillac and select GM models with correct lug pattern and ABS provision.

This assembled front wheel hub combines the hub flange, sealed bearing and ABS tone ring into one ready-to-install unit. It’s built to the OE specifications listed under part number 513121 and intended for front-axle applications on many front-wheel-drive and some all-wheel-drive GM vehicles. The design reduces installation steps compared with separate bearings and races, and the integrated seal and coated bolts help protect internal components from contaminants and corrosion.

Which vehicles will this ECCPP 513121 hub fit?

The ECCPP 513121 is intended for a range of late-1990s through mid-2010s Buick and Cadillac models plus certain GM AWD applications. Fitment varies by model year and drivetrain, so verify the part number against your vehicle’s VIN and axle type before ordering.

• Common front-wheel-drive fitments: Buick Allure, Century, Lacrosse, LeSabre, Lucerne, Park Avenue, Regal, Riviera, Terraza; Cadillac DeVille, DTS, Eldorado (selected years).
• Selected AWD/rear applications: Buick Rendezvous, Buick Terraza, Chevrolet Uplander, Venture, Oldsmobile Silhouette, Pontiac Aztek, Montana, Saturn Relay (specific years and AWD variants).
• OE-style specs: 5 lug pattern, flange diameter ~5.80 in, bolt size M10x1.25, flange offset 2.007 in, ABS-ready tone ring.

How does the ECCPP hub assembly protect the bearing and extend service life?

This assembly uses a high-quality seal system and precision manufacturing to keep contaminants out and lubricant where it belongs, which reduces noise and vibration. Corrosion-resistant coatings on the supplied wheel bolts also simplify future removal and help preserve clamp integrity.

• High-quality internal seals that resist water, dirt and road debris.
• Precision-fit bearing race and hub for consistent preload and reduced noise.
• Coated wheel bolts to limit rust and make disassembly easier.

What are the key specifications and installation considerations?

This hub is built to match OE dimensions and ABS requirements, but proper installation still requires torqueing to factory specifications and checking ABS sensor clearances. Confirm bolt pattern, flange offset and ABS tone ring compatibility with your vehicle before installation.

• OE cross-reference: 513121; 5-lug front axle design with ABS provision.
• Flange diameter approximately 5.80 inches; bolt size M10x1.25; flange offset ~2.007 inches.
• Professional installation recommended: follow factory torque values and confirm ABS sensor function after installation.

Will this wheel hub change vehicle handling or ABS operation?

When correctly matched and installed, the ECCPP hub restores original wheel mounting geometry and maintains ABS signal timing because it includes the ABS tone ring. It’s made to meet the fit and functional characteristics of the OEM part, not to alter handling characteristics.

• Includes ABS tone ring to preserve wheel-speed sensor signals.
• Maintains OEM flange offset and bolt pattern for correct wheel positioning.
• Designed to reduce noise and vibration compared to worn hubs.

Who is this for: This assembled wheel hub is aimed at DIYers, independent mechanics and fleet technicians replacing worn or failed front hubs on compatible Buick, Cadillac and GM vehicles. It’s a practical choice when you need an OE-dimension replacement that integrates the bearing, seal and ABS tone ring to simplify labor and restore correct wheel mounting, provided you confirm fitment details against your vehicle’s year, model and drivetrain.