Bilstein 23-238923 Suspension Strut Assembly - Front Right

Bilstein B4 OE Replacement Front Right Strut

The Bilstein B4 OE Replacement (DampTronic) suspension strut assembly is a direct OE-style replacement for electronically adjustable dampers used on select BMW models. Built to restore original ride quality and handling balance, this front right strut is engineered to meet or exceed OE standards while preserving the factory electronic suspension behavior.

Key Features

• Bilstein B4 OE Replacement (DampTronic) series for electronically adjustable suspension systems
• Front right suspension strut assembly for BMW applications
• Twintube internal design with black paint finish
• Stem upper mount and base cup lower mount
• Boot not included
• OE replacement part number: 23-238923

Product Details

Bilstein B4 OE Replacement (DampTronic) dampers are built for drivers who want to restore factory ride control without changing the vehicle’s original suspension character. This part number 23-238923 is designed for BMW 2 Series and 3/4 Series models equipped with electronic suspension, including applications such as the BMW 328i, BMW 335i, and BMW 430i. It is a direct replacement for the front right position and is intended to maintain the original damping response expected from the vehicle’s electronically controlled system.

The B4 OE Replacement (DampTronic) line focuses on OE-level fit, function, and ride quality for European vehicles with adaptive damping. This makes it a practical choice when replacing a worn front right strut on a BMW 228i, 328d, 340i, or M240i while keeping the factory suspension setup intact. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Problems This Part Can Address

• Excessive bouncing or reduced damping control from a worn front right strut
• Uneven ride quality caused by a failing electronically adjustable damper
• Noisy or unstable front suspension behavior over bumps and rough pavement
• Loss of factory handling feel in BMW models with electronic suspension
• Need for an OE-style replacement during suspension service

Installation Notes

• Compatible With 2017-2021 BMW 230i, front right, with electronic suspension
• Compatible With 2017-2021 BMW M240i, front right
• Compatible With 2017-2020 BMW 430i, front right, with electronic suspension
• Compatible With 2012-2016 BMW 328i, front right, with electronic suspension
• Compatible With 2012-2015 BMW 335i, front right, with electronic suspension

Verify electronic suspension equipment and front right application before installation. The strut uses a stem upper mount and base cup lower mount, and the boot is not included. Professional installation and a post-repair alignment are recommended after suspension replacement.

Quality Assurance

Bilstein is known for OE-focused suspension engineering, and the B4 OE Replacement (DampTronic) line is built to support factory-level ride quality and electronic damping performance on select BMW applications. Part number 23-238923 is manufactured to meet or exceed OE standards for the listed vehicles.