Bilstein 19-227740 Suspension Shock Absorber - Rear

Bilstein B4 Rear Shock for Mazda 6

The Bilstein B4 OE Replacement shock absorber restores factory-style ride control for the rear of your Mazda 6. Built to meet or exceed OE standards, this rear damper is a direct-fit suspension solution for drivers who want original handling balance and ride quality.

Compatible with 2009-2013 Mazda 6 rear applications, part number 19-227740 is part of Bilstein’s B4 OE Replacement line, which focuses on preserving the vehicle’s original damping characteristics. This rear shock absorber uses a twintube internal design and a black painted finish for a clean OE-style appearance.

Key Features

• Bilstein B4 OE Replacement series for factory-style ride restoration
• Rear suspension shock absorber for 2009-2013 Mazda 6
• Twintube internal design for OE-type damping behavior
• Black paint finish
• Black straight boot included
• Upper mount type: eye 12.3mm
• Lower mount type: eye 14.5mm

Detailed Description

Bilstein 19-227740 is engineered as an OE replacement rear shock for the Mazda 6, helping return the suspension to original performance and handling characteristics. The B4 OE Replacement line is built for drivers who want a direct replacement that follows factory ride quality expectations while maintaining Bilstein’s established damper construction standards. This rear shock absorber is a practical choice for restoring control, comfort, and stability on 2009-2013 Mazda 6 models.

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

What It Helps Address

• Excessive rear bounce or oscillation
• Reduced ride control over bumps and uneven pavement
• Rear-end instability during braking or cornering
• Worn OE shock performance on a Mazda 6
• Loss of factory ride comfort and handling balance

Installation Notes and Tips

Fits 2009-2013 Mazda 6, rear. Confirm upper and lower eye mount dimensions before installation and inspect related suspension components such as bushings, mounts, and hardware condition during replacement. For best results, replace shocks in pairs on the same axle to maintain balanced damping.

Quality Assurance

Bilstein B4 OE Replacement dampers are built to meet or exceed OE standards and are designed to restore original ride quality and handling response. Part number 19-227740 reflects Bilstein’s OE-focused suspension engineering for rear Mazda 6 applications.