Bilstein 19-124551 B4 OE Replacement Front Shock for 1998-2005 Mercedes ML-Class

Vehicle Fitment

• 1998-2003 Mercedes-Benz ML320 (W163, AWD, 3.2L V6 M112)
• 2003-2005 Mercedes-Benz ML350 (W163, AWD, 3.7L V6 M112)
• 1999-2001 Mercedes-Benz ML430 (W163, AWD, 4.3L V8 M113)
• 2002-2005 Mercedes-Benz ML500 (W163, AWD, 5.0L V8 M113)
• 2000-2003 Mercedes-Benz ML55 AMG (W163, AWD, 5.5L V8 M113)

Fitment Notes

• Fits all W163 M-Class models - all variants are AWD (4Matic); no drivetrain exclusions apply
• Not recommended for use with lowering springs - engineered specifically to restore stock ride height and OE ride quality
• Sold individually - one shock absorber per unit; two required for a complete front axle replacement
• Replaces OEM Mercedes-Benz part numbers: 163 326 04 00, 163 326 11 00, A163 326 11 00
• Cross-references Bilstein part number 19-293899 for overlapping W163 fitment applications

Features

• Twin-tube gas-pressurized design delivers consistent, OE-quality damping performance across all driving conditions and load variations
• Engineered to match original Mercedes-Benz W163 factory specifications - restores ride quality, handling precision, and suspension response without any modification
• Gas-charged construction prevents oil aeration and foaming under repeated compression cycles, ensuring stable and fade-free damping performance over time
• Includes a pre-installed black straight dust boot to protect the piston rod from road debris, moisture, and corrosion
• Stem upper mount and 14mm eye lower mount provide direct OEM-compatible fitment with no hardware changes required
• Black painted finish provides corrosion resistance suitable for all-weather use in year-round driving conditions
• Meets or exceeds original equipment damping force, travel, and load capacity specifications for the W163 platform
• Backed by Bilstein's Limited Lifetime Warranty against manufacturer defects for gas pressure shock absorbers

Specifications

• Part Number: 19-124551
• Brand: Bilstein
• Series: B4 OE Replacement (Touring Class)
• Position: Front axle (left or right)
• Internal Design: Twin-tube, gas-pressurized
• Collapsed Length: 13.70 in (348.0 mm)
• Extended Length: 15.08 in (383.0 mm)
• Upper Mount Type: Stem
• Lower Mount Type: Eye, 14mm
• Spring Seat: Not included
• Dust Boot: Included (Black Straight)
• Finish: Black paint
• Ride Height: Stock (OE)
• Adjustable Valving: No
• Quantity: 1 shock absorber

Included Components

• 1x Bilstein B4 Front Shock Absorber with dust boot (19-124551)

Product Description

The Bilstein 19-124551 is a B4 OE Replacement front shock absorber designed specifically for the 1998-2005 Mercedes-Benz M-Class (W163 platform), covering the ML320, ML350, ML430, ML500, and ML55 AMG. Using a twin-tube gas-pressurized design, this shock absorber is calibrated to match the factory damping characteristics of the W163's front suspension, restoring the smooth, controlled ride quality that these SUVs were engineered to deliver. A pre-installed dust boot is included to protect the piston rod from the road contamination and moisture that front axle positions are particularly exposed to on an SUV of this type.

The B4 series is Bilstein's dedicated OEM replacement line, built to meet or exceed the specifications of the original equipment component for each specific vehicle application. Unlike generic aftermarket alternatives, the 19-124551 is valved precisely for the W163 platform, accounting for the weight, suspension geometry, and ride tuning of the Mercedes-Benz M-Class. The gas-charged twin-tube construction prevents oil foaming under repeated high-load damping cycles - a key advantage on a vehicle that is frequently used with cargo loads or in varied terrain conditions. The direct-fit stem upper mount and 14mm eye lower mount correspond exactly to the W163's factory mounting configuration, requiring no additional hardware for installation.

All W163 M-Class variants supported by this shock are AWD (4Matic), so no drivetrain restrictions apply across the fitment range. This unit is designed to restore stock ride height and OE suspension behavior and is not recommended for use with lowering springs. Two units are required for a complete front axle replacement. The 19-124551 is cross-referenced with OEM Mercedes-Benz part numbers 163 326 04 00 and 163 326 11 00, and is also cross-referenced to Bilstein part number 19-293899 for overlapping W163 applications. It is covered by Bilstein's Limited Lifetime Warranty against manufacturer defects.