FAG 102421 Wheel Bearing - Front

Front Wheel Bearing for Mazda 6

FAG 102421 is a front wheel bearing built as a compact, sealed bearing unit with preset clearance and lifetime lubrication. It is engineered for the 2009-2013 Mazda 6 front axle, where consistent wheel support and low-maintenance operation matter in daily driving and demanding road conditions.

Key Features

• Inside diameter: 42 mm (1.654 in)
• Outside diameter: 80 mm (3.15 in)
• Height: 45 mm (1.772 in)
• First-generation sealed wheel bearing design
• Preset bearing clearance for controlled operation
• For-life lubrication and sealing for maintenance-free service
• Angular contact ball bearing construction for front-wheel applications

Detailed Description

This FAG wheel bearing, part number 102421, is designed for front wheel service on the Mazda 6 and uses a compact, rugged bearing unit layout. The sealed design helps keep lubricant in place and contaminants out, while the angular contact ball bearing construction supports the loads seen at the front wheels. With its 42 mm inside diameter, 80 mm outside diameter, and 45 mm height, this bearing is sized for the specified application and built for stable, long-term operation.

This part cross-references National 510102 and SKF FW27 for the same application.

Common Problems This Part Can Address

• Wheel bearing noise from the front of the vehicle
• Rough or uneven wheel rotation
• Excessive play at the wheel hub area
• Seal wear that allows contamination into the bearing assembly
• Loss of smooth front-end road feel on a Mazda 6

Installation Notes and Tips

• Fits 2009-2013 Mazda 6, front.
• Fits 2009-2013 Mazda 6, front, DOHC 16 Valve.
• Inspect the hub, knuckle, and related mounting surfaces before installation.
• Confirm bearing dimensions and vehicle application before pressing the unit into place.
• Use proper bearing service tools to avoid damage during installation.

Quality Assurance

FAG manufactures this wheel bearing as a sealed, lifetime-lubricated unit with preset clearance for consistent service in the specified Mazda 6 front-wheel application. Part number 102421 is built to meet the dimensional and design requirements listed above.