Bilstein 46-190321 Suspension Kit - Front and Rear

Bilstein B12 Suspension Kit for Mazda 3

The Bilstein B12 (Pro-Kit) suspension kit combines Bilstein Performance dampers with Eibach Pro-Kit springs for a fixed-height lowering setup. This application is tuned for the 2007-2009 Mazda 3, with a moderate drop and a balanced ride height for street use.

Part number 46-190321 is built around Bilstein’s monotube damper design and a matched spring-and-damper package. For Mazda 3 owners looking for a controlled lowering solution, this kit focuses on suspension response, stance, and application-specific tuning.

Key Features

• Bilstein B12 (Pro-Kit) suspension kit for the 2007-2009 Mazda 3
• Bilstein Performance dampers paired with Eibach Pro-Kit springs
• Moderate lowering range of 24-40 mm depending on application
• Monotube internal damper design for consistent damping response
• Finish: yellow dampers with dark grey springs
• Application-specific tuning for front and rear suspension
• Part number 46-190321

Product Details

The Bilstein B12 (Pro-Kit) line is a matched suspension package that brings together dampers and springs selected for a specific vehicle application. On the Mazda 3, this setup is engineered to lower ride height while maintaining a fixed, predictable suspension profile. The result is a more purposeful stance with components tuned to work together rather than as separate upgrades. If you are searching for a Bilstein 46-190321 suspension kit for Mazda 3 front and rear fitment, this package provides a direct solution for the 2007-2009 chassis.

This part cross-references Eibach part numbers E10-55-008-05-22 and E90-55-008-05-22 for the same application.

Common Uses

• Reducing factory ride height on a 2007-2009 Mazda 3
• Replacing worn dampers and springs with a matched suspension package
• Improving suspension control after a lowering spring upgrade
• Addressing uneven stance or excessive factory ride height
• Supporting a cleaner lowered appearance with application-specific tuning

Installation Notes

Fits 2007-2009 Mazda 3, front and rear. Rear lowered height is listed at 15 mm, with up to 915 kg axle load noted for this application. Verify vehicle configuration and axle load before installation, and confirm that the suspension setup matches the intended ride-height change. Part number 46-190321 should be matched to the exact vehicle application shown in the fitment data.

Quality Assurance

Bilstein B12 (Pro-Kit) kits use Bilstein monotube dampers paired with Eibach springs and are tuned for specific vehicle applications. The product line is built around matched components and fixed-height lowering for consistent suspension behavior on the listed Mazda 3 fitment.