Bilstein 22-111081 Suspension Strut Assembly - Front

Bilstein B4 OE Replacement Suspension Strut Assembly Overview

The Bilstein shock absorbers B4 OE Replacement suspension strut assembly (part number 22-111081) is engineered for precise fitment on BMW 540i models. Designed to restore original ride comfort and handling, this strut assembly features a durable black paint finish and a twintube internal design for consistent performance.

• Compatible with BMW 540i vehicles
• Part number: 22-111081
• Black paint finish for corrosion resistance
• Twintube internal design for reliable damping
• Lower mount type: base cup
• Upper mount type: stem
• Boot not included

Detailed Features of the Bilstein B4 OE Replacement Strut

This Bilstein suspension strut assembly is part of the B4 OE Replacement series, which focuses on delivering original equipment quality and fitment. The twintube internal design provides a balance between comfort and control, replicating the damping characteristics of the factory-installed struts. The black paint finish offers protection against corrosion, extending the service life of the component. The lower mount uses a base cup design, while the upper mount features a stem type, ensuring compatibility with the BMW 540i suspension system. Note that this assembly does not include a boot.

Applications and Problem Solving

• Restores factory ride quality and handling on BMW 540i
• Replaces worn or leaking original struts
• Addresses excessive body roll and poor vehicle stability
• Improves shock absorption for a smoother ride
• Corrects uneven tire wear caused by suspension issues

Installation Notes and Tips

Installation of the Bilstein B4 OE Replacement suspension strut assembly (22-111081) should be performed by a qualified technician familiar with BMW suspension systems. Ensure all mounting points, including the base cup lower mount and stem upper mount, are properly aligned and torqued to manufacturer specifications. Since the boot is not included, inspect the existing boot for damage and replace if necessary to protect the strut shaft.

Quality Assurance and Warranty

Bilstein manufactures the B4 OE Replacement series to meet or exceed original equipment standards, providing reliable performance and durability. While specific warranty details are not provided here, Bilstein products typically come with a limited warranty covering defects in materials and workmanship. Refer to official Bilstein documentation for exact warranty terms.