Bilstein 23-303324 Suspension Strut Assembly - Front Left

Bilstein B4 OE Replacement Suspension Strut Assembly Overview

The Bilstein shock absorbers part number 23-303324 is designed specifically for BMW 330e, 330i, and 430i models. This suspension strut assembly offers reliable performance and precise fitment to restore your vehicle's original handling characteristics.

• Compatible with BMW 330e, 330i, and 430i models
• Part number: 23-303324
• Collapsed length: 14.65 inches (372.0 mm)
• Extended length: 22.38 inches (568.5 mm)
• Internal twintube design for consistent damping
• Black paint finish for corrosion resistance
• Includes fixed spring seat
• Lower mount type: base cup; upper mount type: stem
• Boot not included

About the B4 OE Replacement (DampTronic) Product Line

The B4 OE Replacement (DampTronic) line from Bilstein is engineered to meet original equipment specifications, providing a direct replacement for factory-installed suspension components. This product line is tailored for vehicles equipped with DampTronic electronic damping control systems, ensuring compatibility and maintaining the intended ride quality and handling dynamics of your BMW 330e, 330i, or 430i.

Detailed Product Description

This Bilstein suspension strut assembly features a twintube internal design that delivers consistent damping performance across a range of driving conditions. The strut has a collapsed length of 14.65 inches (372.0 mm) and an extended length of 22.38 inches (568.5 mm), matching the original equipment dimensions for proper fitment. Finished in durable black paint, it offers corrosion resistance to extend service life. The assembly includes a fixed spring seat and uses a base cup lower mount and stem upper mount to ensure secure installation and reliable operation. Note that this strut does not include a protective boot.

Common Applications and Problem Solving

• Restores factory ride height and suspension geometry on BMW 330e, 330i, and 430i
• Replaces worn or leaking original struts causing poor handling or uneven tire wear
• Improves vehicle stability and control by maintaining proper damping characteristics
• Addresses noise or vibration issues related to damaged suspension components
• Supports DampTronic electronic damping systems for consistent performance

Installation Notes and Tips

Ensure compatibility with your specific BMW model and year before installation. The fixed spring seat is included, so separate spring seat replacement is not necessary. Since the boot is not included, inspect the existing boot for damage and replace if needed to protect the strut shaft. Proper torque specifications should be followed for the base cup lower mount and stem upper mount to maintain safety and performance.

Quality Assurance and Warranty

Bilstein shock absorbers are manufactured to meet OE standards, ensuring reliable performance and durability. This suspension strut assembly undergoes rigorous quality control to provide consistent damping and fitment. Warranty details are provided by Bilstein and typically cover defects in materials and workmanship; please refer to official Bilstein documentation for specific warranty terms.