FCS 346354 Shock Absorber - Rear

Rear Shock Absorber for BMW 2 and 4 Series

FCS 346354 is a rear suspension shock absorber built for select BMW 228i, 230i, 228i xDrive, 230i xDrive, 420i Gran Coupe, 428i, 430i, 430i Gran Coupe, 435i, 440i, and related xDrive applications. With a compressed length of 14.61 inches, an extended length of 21.3 inches, and 6.69 inches of stroke, it is specified for rear suspension service where correct travel and ride control matter.

FCS is the brand line on this part, and 346354 is cataloged as a direct-fit suspension shock absorber for rear BMW applications with the listed suspension exclusions.

• Compressed length: 14.61 in.
• Extended length: 21.3 in.
• Stroke length: 6.69 in.
• Rear position application
• Fits select BMW models with Sport Suspension or M Sport Suspension, depending on the listing
• Excludes Adaptive Control Suspension where noted in fitment

Detailed Fitment and Application

Compatible With rear suspension service on 2014-2021 BMW 2 Series and 4 Series models listed in the fitment data, including 2017-2021 BMW 230i rear, 2017-2020 BMW 230i xDrive rear, 2014-2016 BMW 228i rear, 2016 BMW 228i xDrive rear, 2014-2016 BMW 428i rear, 2014-2016 BMW 428i xDrive rear, 2017-2020 BMW 430i rear, 2017-2020 BMW 430i Gran Coupe rear, 2017-2020 BMW 440i rear, and 2015-2016 BMW 435i xDrive rear. This part number, FCS 346354, is also listed for 2016 and 2018-2020 BMW 420i Gran Coupe rear applications, along with 2016 BMW 435i rear and 2017 BMW 430i and 440i rear configurations shown in the fitment table.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What This Shock Absorber Helps Address

• Excessive rear-end bounce after bumps
• Reduced damping control over uneven pavement
• Rear suspension noise caused by worn shock performance
• Unstable ride quality during braking or cornering
• Uneven rear tire contact from degraded shock response

Installation Notes and Tips

Verify the vehicle’s suspension package before ordering, since several BMW listings exclude Adaptive Control Suspension and some require Sport Suspension or M Sport Suspension. Match the rear position and compare the compressed length, extended length, and stroke length to the original unit before installation. For BMW 230i, 430i, 440i, 228i, 428i, and 435i applications, confirm the exact model year and drivetrain notes shown in the fitment table.

Quality Assurance

FCS 346354 is cataloged for direct rear suspension replacement on the specified BMW applications and is built to match the listed dimensional requirements for proper fitment.