KYB 3418003 Suspension Shock Absorber - Rear Left

KYB Excel-G Rear Left Shock Absorber

KYB Excel-G 3418003 is a nitrogen gas-charged, twin-tube suspension shock absorber built to restore original ride control, stability, stopping response, lane-change responsiveness, and handling. It is made on KYB OE assembly lines with OE-quality components and calibrated to return the vehicle to its designed performance.

Compatible with BMW X5 and BMW X6 rear left applications that do not use electronic controlled suspension, this KYB shock absorber is a direct-fit service part for restoring suspension performance on the rear left side.

Key Features

• Part number 3418003 for rear left suspension service
• Nitrogen gas-charged, twin-tube design
• Built on KYB OE assembly lines using OE-quality components
• Calibrated to restore original ride characteristics rather than alter them
• Internal rebound spring included
• Lower mount type: E2 (15.5x61.5)
• Upper mount type: S1 (12MM)
• Compressed length: 14.76 in; extended length: 19.09 in; stroke length: 4.33 in

Detailed Description

The KYB Excel-G line is KYB’s Original Equipment for the Aftermarket offering, focused on returning factory ride control and handling balance. This 3418003 shock absorber is engineered for BMW X5 and BMW X6 rear left fitments and follows OE-style calibration so the suspension responds as intended during braking, cornering, and everyday driving. If you are replacing a worn rear shock on a BMW X5 or BMW X6, part number 3418003 provides a service solution that matches the original design intent.

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

What It Helps Address

• Excessive rear-end bounce after bumps
• Reduced stability during braking and lane changes
• Uneven or unsettled ride quality
• Delayed suspension response from a worn shock absorber
• Handling drift or loss of control feel in the rear suspension

Installation Notes and Tips

• Fits 2014-2018 BMW X5, rear left, except electronic controlled suspension; Excel-G.
• Fits 2015-2019 BMW X6, rear left, except electronic controlled suspension; Excel-G.
• Verify the vehicle is equipped with non-electronic controlled suspension before installation.
• Confirm mount style and dimensions against the removed part before final assembly.
• Inspect related suspension components such as bushings, mounts, and tires during replacement.

Quality Assurance

KYB is a major OE shock and strut supplier, and the Excel-G line is produced on the same KYB OE assembly lines using OE-quality components. The design focus is restoring original vehicle performance for BMW X5 and BMW X6 rear left applications.