Rear Wheel Bearing ACDelco RW20-10 Roller Bearing for GM Vehicles

Description

Product Overview

The ACDelco rear wheel bearing (model RW20-10) is engineered to match the exact specifications of the original equipment manufacturer for General Motors vehicles. Constructed from high‑grade plastic, the bearing housing provides a lightweight yet robust enclosure that resists corrosion, chemical exposure, and the wear patterns typical of daily driving and high‑performance applications. Inside the housing, a precision‑machined roller bearing delivers smooth rotational motion, reducing friction and heat buildup while supporting the vehicle’s rear axle loads. The design incorporates a standard bearing number RW20‑10, ensuring compatibility with a wide range of GM models that originally used this part, and it meets FDA‑approved material standards for safety and durability.

Every unit is produced under strict quality‑control protocols at ACDelco’s dedicated manufacturing facilities, where automated inspection systems verify dimensional accuracy, surface finish, and load capacity before the product leaves the factory. The bearing’s grease‑compatible design allows technicians to apply the recommended lubrication without risking damage to the plastic components, extending service intervals and minimizing maintenance costs. With an item weight of 12.8 ounces and compact dimensions of 3.3 × 3.3 × 1.2 inches, the bearing is easy to handle, store, and install, fitting seamlessly into the wheel hub assembly without the need for additional adapters or modifications.

In addition to its mechanical advantages, the ACDelco rear wheel bearing carries the OEM part number 12479031, aligning with the manufacturer’s part catalog and ensuring that inventory systems, service manuals, and parts ordering processes recognize it as a direct replacement. The bearing’s global trade identification numbers (GTIN) 021625483320 and 40021625483328 further simplify cross‑border logistics, making it a reliable choice for distributors, repair shops, and end‑users worldwide. By choosing this GM‑approved component, customers benefit from the same fit, form, and function as the original part, backed by ACDelco’s reputation for automotive excellence.

Usage

This rear wheel bearing is intended for installation on the rear axle of GM passenger cars, light trucks, and SUVs that originally specified the RW20‑10 bearing. It is ideal for both professional mechanics performing routine maintenance and DIY enthusiasts undertaking a bearing replacement as part of a larger suspension overhaul. The bearing’s plastic housing and roller design make it well suited for environments ranging from urban commuting to off‑road adventures, where exposure to road salt, mud, and temperature fluctuations can challenge less robust components.

When installing, the bearing should be seated in the hub using the factory‑specified tools to avoid misalignment. After placement, a high‑quality automotive grease compatible with the plastic housing should be applied to the rollers and inner race to ensure optimal lubrication. The bearing’s design tolerates typical torque specifications for GM rear hubs, and it can be paired with standard wheel hub assemblies without the need for custom machining. Regular inspection during scheduled service intervals will help detect early signs of wear, allowing the bearing to be replaced before any impact on vehicle handling or safety occurs.

Why Choose Us

Choosing the ACDelco rear wheel bearing means selecting a part that carries the same engineering pedigree as the original GM component. ACDelco’s commitment to quality is reflected in the rigorous testing each bearing undergoes, including load simulations, vibration analysis, and corrosion resistance assessments. This ensures that the bearing not only meets but often exceeds the performance expectations set by the vehicle manufacturer, delivering reliable operation over the full lifespan of the vehicle.

In addition to the technical merits, ACDelco provides comprehensive customer support, including access to technical documentation, installation guides, and a responsive service team ready to assist with any fitment questions. The company’s extensive dealer network guarantees that replacement parts are readily available, and the warranty coverage offers peace of mind for both professional shops and individual owners. By partnering with ACDelco, customers gain confidence that they are installing a component that aligns with GM’s original design intent while benefiting from modern manufacturing efficiencies.

Key Features

• Durable plastic housing resists corrosion and reduces overall vehicle weight.
• Precision roller bearing delivers smooth rotation and minimizes heat buildup.
• Grease‑compatible design allows easy lubrication for extended service intervals.
• Exact OEM fit (RW20-10) ensures seamless installation without modifications.
• Backed by ACDelco’s customer support and warranty for reliable after‑sales service.

FAQ

What vehicles are compatible with the RW20‑10 bearing?

The RW20‑10 bearing is specified for a range of General Motors models, including many Chevrolet, GMC, Buick, and Cadillac passenger cars and light trucks. Compatibility lists can be found in the vehicle’s service manual or by consulting ACDelco’s parts lookup tool, which matches the bearing number to the appropriate GM applications.

Can I install this bearing myself, or do I need a professional?

While the bearing is designed for straightforward installation using standard automotive tools, a basic understanding of hub assembly procedures is recommended. DIY owners should follow the manufacturer’s torque specifications and use a bearing press or appropriate puller to avoid damaging the housing. If you are uncertain, a qualified mechanic can complete the installation quickly and ensure proper alignment.

What type of grease should I use with this bearing?

Any high‑quality automotive grease that is compatible with plastic components is suitable. ACDelco recommends using a lithium‑based or synthetic grease that meets the vehicle manufacturer’s specifications. Avoid greases containing solvents or extreme additives that could degrade the plastic housing over time.

How long will the bearing last under normal driving conditions?

When installed correctly and maintained with regular lubrication, the ACDelco rear wheel bearing typically provides service life comparable to the original equipment, often exceeding 80,000 miles. Actual lifespan can vary based on driving habits, road conditions, and adherence to maintenance schedules. Periodic inspections will help identify wear early and extend the bearing’s useful life.