Bilstein 19-240220 B4 OE Rear Twintube Shock for 2014-2018 Mazda 3 FWD BM BN

Vehicle Fitment

• 2014-2018 Mazda 3 Sedan (BM/BN, All Engines, FWD - Standard Chassis) - Rear
• 2014-2018 Mazda 3 Hatchback (BM/BN, All Engines, FWD - Standard Chassis) - Rear
• 2014-2018 Mazda 3 Sport Hatchback (BM/BN, All Engines, FWD - Standard Chassis) - Rear

Fitment Notes

• Front-wheel drive (FWD) models only - not compatible with AWD Mazda 3 variants.
• Rear position only, left or right - sold as a single shock absorber. Order 2 for a complete rear axle replacement.
• Standard chassis models only - not recommended for use with lowering springs.
• OEM cross-references: Mazda BJM7-28-910A, B45A-28-910A, B45C-28-910A, BJM5-28-910A.
• Factory shock mounting bolts are reused for installation. Mounting plates sold separately if required.
• Not for sale in California (CA restricted).

Features

• Bilstein B4 OE Replacement engineering - specifically developed to restore factory ride quality, handling, and rear axle stability on the fourth-generation Mazda 3 (BM/BN) rear suspension, meeting or exceeding OE standards.
• Twintube gas pressure design delivers consistent, fade-free damping with high power reserves for safety and stability across all road conditions.
• Application-specific valve settings developed by Bilstein engineers for the BM/BN Mazda 3 rear suspension geometry and spring rates.
• Restores original body control, cornering composure, and ride comfort lost to worn or degraded factory rear shocks.
• Direct bolt-in replacement - no modifications required for FWD applications.

Specifications

• Part Number: 19-240220
• Series: Bilstein B4 OE Replacement
• Position: Rear (Left or Right)
• Internal Design: Twintube Gas Pressure
• Drivetrain: FWD Only
• OEM Cross References: Mazda BJM7-28-910A, B45A-28-910A, B45C-28-910A, BJM5-28-910A
• Package Dimensions: 68.5 cm L x 7.5 cm W x 7.5 cm H
• Shipping Weight: 1.81 kg
• UPC: 4025258748470
• California: Not for sale in CA
• Warranty: Limited Lifetime (against manufacturer defects)

Included Components

• 1x Bilstein B4 OE Replacement Rear Twintube Shock Absorber (19-240220)
• 1x Set of necessary washers and bushings for installation

Product Description

The Bilstein 19-240220 is a B4 OE Replacement rear shock absorber for 2014-2018 Mazda 3 (BM/BN generation) in Sedan, Hatchback, and Sport Hatchback body styles with front-wheel drive and standard chassis suspension. The B4 is Bilstein's direct OE replacement line, developed to restore the Mazda 3's factory suspension character precisely - not alter it. For BM/BN owners experiencing increased body bounce, reduced rear traction, or a noticeably degraded ride from worn rear shocks, the 19-240220 returns the rear suspension to factory damping specification with a straightforward direct bolt-in installation.

Twintube gas pressure construction with application-specific valving tuned for the BM/BN platform's rear suspension geometry and spring rates delivers consistent, fade-free performance across all driving conditions. This unit fits FWD Mazda 3 models only - verify drivetrain before ordering. Replaces OEM Mazda part numbers BJM7-28-910A, B45A-28-910A, B45C-28-910A, and BJM5-28-910A. Sold individually - order two for a complete rear axle replacement. Not for sale in California. Backed by Bilstein's Limited Lifetime Warranty against manufacturer defects.