KYB 343352 Shock Absorber - Rear

KYB Excel-G Rear Shock for BMW 3 Series

KYB Excel-G part number 343352 is a rear suspension shock absorber for select BMW 3 Series models. It is built to restore original ride control, stability, and steering response while maintaining OE-style performance for daily driving.

Key Features

• KYB recommended OEM replacement shock absorber
• Nitrogen gas-charged, twin-tube design
• Triple-lip fluid seal helps reduce oil and gas leakage
• Vehicle-specific, hand-assembled damping valves manage tire contact, steering response, and body movement
• Strong strut body and bracket construction helps minimize flex and maintain alignment
• R-stop design for controlled rebound performance
• Compatible with electronic safety systems that rely on suspension performance staying within factory intent

Product Details

The KYB Excel-G line is KYB’s OE replacement series, built on the same assembly lines and with the same quality components used for original equipment applications. This rear shock absorber is calibrated to return the BMW 3 Series to its designed handling balance rather than changing the vehicle’s character. Part number 343352 is a practical choice for drivers looking to restore rear suspension control on BMW 325i, 330i, 328i, and related 3 Series models.

Measured specifications include 14.57 inches compressed length, 23.94 inches extended length, and 9.37 inches stroke length. Mounting details are lower mount type E2(12X41) and upper mount type S1. The unit does not include a dust cover, internal rebound spring, or B-stop.

This part cross-references Monroe Shocks & Struts 5998 for the same application.

What It Helps Address

• Excessive rear-end bounce after bumps
• Loose or delayed handling response in the BMW 3 Series rear suspension
• Reduced tire contact during braking and lane changes
• Oil seepage or gas loss from a worn shock absorber
• Noise and vibration caused by tired suspension damping

Installation Notes

Compatible with rear applications on select 1992-2006 BMW 3 Series models, including 325Ci, 330Ci, 325i, 330i, 330xi, 323Ci, 323i, 328Ci, 328i, 323is, 328is, 318i, and 318is. Fitment varies by suspension package; several listings exclude sport suspension, M-Technik suspension, or adaptive control suspension. Follow the manufacturer’s instructions for replacing the suspension strut and coil spring assembly where noted.

KYB recommends replacing strut mounts with SM5257 and protecting the new unit with strut boot SB107 to reduce noise, vibration, and contamination.

Quality Assurance

KYB is a major OE shock and strut supplier, and the Excel-G line is classified as an Original Equipment for the Aftermarket replacement. That OE-based approach supports consistent damping, fit, and performance for BMW 3 Series rear suspension service.