Bilstein 46-223661 Suspension Kit - Front and Rear

Bilstein B12 (Pro-Kit) Suspension Kit Overview

The Bilstein B12 (Pro-Kit) suspension kit, part number 46-223661, is engineered for BMW models including the 320i, 328d, 328i, 330e, 330i, 428i, and 430i. This kit combines monotube dampers with performance springs to enhance handling and ride quality.

• Monotube internal design for consistent damping performance
• Dampers finished in yellow, springs in dark grey for durability and style
• Specifically designed for BMW 3 and 4 Series models
• Part of the B12 (Pro-Kit) series focused on balanced performance upgrades
• Part number 46-223661 ensures exact fitment and compatibility

Detailed Product Description

The Bilstein B12 (Pro-Kit) suspension kit (46-223661) features monotube shock absorbers that provide precise and consistent damping characteristics. The monotube design improves heat dissipation and reduces fade during extended driving. The kit includes yellow dampers paired with dark grey springs, engineered to work together to lower the vehicle’s center of gravity and improve cornering stability without compromising ride comfort. This suspension kit is tailored for BMW 320i, 328d, 328i, 330e, 330i, 428i, and 430i models, ensuring a direct fit and optimized performance.

About the B12 (Pro-Kit) Series

The B12 (Pro-Kit) line from Bilstein is designed to offer a balanced suspension upgrade by combining performance springs with monotube dampers. This series targets drivers seeking improved handling and a sportier stance while maintaining everyday drivability. The B12 (Pro-Kit) suspension kits are engineered to work seamlessly with the vehicle’s original suspension geometry, making them a practical choice for BMW owners looking to enhance their driving experience.

Common Applications and Benefits

• Improves handling and reduces body roll on BMW 3 and 4 Series models
• Restores suspension performance on worn or aging shock absorbers and springs
• Enhances vehicle stability during cornering and braking
• Provides a lowered stance for improved aerodynamics and appearance
• Reduces harshness compared to more aggressive coilover setups

Installation Notes and Tips

Installation of the Bilstein B12 (Pro-Kit) suspension kit (46-223661) should be performed by a qualified technician familiar with BMW suspension systems. Proper alignment after installation is recommended to ensure optimal handling and tire wear. No additional modifications are typically required as this kit is designed for direct fitment on compatible BMW models.

Quality Assurance and Warranty

Bilstein suspension components are manufactured to strict quality standards, ensuring durability and consistent performance. While specific warranty details for part number 46-223661 should be confirmed at the point of purchase, Bilstein generally offers coverage against manufacturing defects. This suspension kit is engineered to meet or exceed OEM specifications for reliability and longevity.