Automotive bearings are widely used in critical components such as engines, wheel hubs, transmissions, and drivetrains. A typical passenger car contains over 100 sets of bearings, operating continuously under conditions of load, vibration, and temperature fluctuations.

For vehicle manufacturers, aftermarket distributors, and service providers, selecting the right bearings is not only about dimensional compatibility but also directly impacts overall vehicle reliability, after-sales risks, and long-term operational costs. From a sourcing perspective, this page systematically outlines common automotive bearing types, corresponding OE part numbers, and key selection considerations.

Wheel hub bearings connect wheels to the suspension system, supporting radial loads from vehicle weight and axial forces generated during braking and cornering. Most modern vehicles adopt integrated hub bearing units, offering enhanced stability in sealing performance and installation efficiency.

Common OE Part Numbers & Applications:

• DAC3874W: Universal front wheel hub bearing for passenger cars, dimensions 38 * 74 * 33 mm
• 42450-0R010: Rear wheel hub bearing for Toyota RAV4 (2006–2015)
• A2233340400: Wheel hub unit for Mercedes-Benz W206 and GLC series
• 1044121: Front axle bearing for Tesla Model 3 / Model Y

Key Considerations for Sourcing:

As high-turnover aftermarket products, wheel hub bearings require close attention to OE compatibility accuracy, sealing structure, and batch consistency during sourcing.

Engine bearings operate in high-temperature, high-load, and lubricated environments to support crankshafts and connecting rods. They are mainly classified into main bearings and connecting rod bearings.

Common Engine Bearing Part Numbers:

• 3901230: Connecting rod bearing for Cummins 4BT 3.9L diesel engines
• 12111-20900: Main bearing for Nissan gasoline engines
• LR082363: Connecting rod bearing set for Land Rover AJ200 2.0 diesel engines
• 2750300060: Connecting rod bearing for Mercedes-Benz S600 (W221)

Key Considerations for Sourcing:

Engine bearings require careful evaluation of material composition, oil groove design, and dimensional stability—especially critical for diesel or turbocharged applications.

Bearings in transmissions, differentials, and drivetrains enable smooth torque transfer and withstand combined loads. Tapered roller bearings and deep groove ball bearings are widely used in these systems.

Common Drivetrain Bearing Part Numbers:

• 5N0521101C: Drive shaft center bearing for Audi Q3 / Volkswagen Tiguan
• 6704110112: Drive shaft bearing for Mercedes-Benz commercial vehicles
• B25-163: Deep groove ball bearing commonly used in automotive gearboxes
• VKBA3552: Wheel hub bearing kit for Nissan and Iveco vehicles

Key Considerations for Sourcing:

Drivetrain bearings focus on noise control, load capacity, and service life—particularly important in commercial vehicle applications.

Start with OE part numbers (e.g., Toyota wheel hub bearing 42410-12250) to verify dimensions, sealing structures, and sensor compatibility.

Select appropriate bearing structures and materials based on temperature ranges, load types, rotational speeds, and lubrication conditions.

• Deep groove ball bearings: High speed, low noise—ideal for passenger cars
• Tapered roller bearings: Handle combined loads—suitable for drivetrains
• Cylindrical roller bearings: High load, low speed—designed for commercial vehicles

Low-quality automotive bearings may cause:

• Increased friction and abnormal temperature rise
• Noise and vibration issues
• Premature wear or system failures

Bearings manufactured to ISO standards maintain stable clearances, reduce failure rates, and extend maintenance intervals. For fleet operators and distributors, quality consistency directly affects after-sales costs and customer complaint rates.

GQZ Bearing serves global customers, providing bearings for automotive OEM projects, aftermarket replacement, and vehicle maintenance applications.

We offer:

• OE part number cross-referencing and application verification
• Consistent quality control for wheel hub bearings, engine bearings, and drivetrain bearings
• Flexible supply options for sample testing, bulk orders, and long-term partnerships
• Technical support to minimize installation and after-sales risks

Currently, we steadily supply bearings including the DAC3874W, 3901230, and VKBA series, compatible with major vehicle models such as Toyota, Mercedes-Benz, Nissan, Land Rover, and Tesla.

Q1: Do you support OE part number matching for multiple vehicle models?

A1: Yes. OE cross-referencing and application confirmation are available prior to ordering.

Q2: Can I request samples or small-batch trials?

A2: Samples and trial orders are supported to facilitate evaluation for future large-scale cooperation.

Q3: Are the products suitable for aftermarket sales?

A3: Our products emphasize batch consistency, making them ideal for aftermarket replacement applications.

When sourcing automotive bearings for OEM production, aftermarket distribution, or fleet maintenance, partnering with a supplier familiar with OE requirements and actual operating conditions is crucial.

Contact GQZ Bearing today to get:

• OE part number matching confirmation
• Product technical specifications
• Automotive bearing pricing quotes

We collaborate with distributors, service providers, and manufacturers worldwide to deliver stable, sustainable bearing supply solutions.