Bilstein B4 OE Replacement is an OEM-quality monotube shock absorber providing factory ride quality — a direct replacement for the factory unit.
| Type | Bilstein B4 OE Replacement strut |
| Position | Rear Left |
| Technology | Monotube |
| Quantity | 1 (sold individually) |
| Part Number | 44-400187 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2021 | Mercedes-Benz | S500 | 4Matic |
| 2022 | Mercedes-Benz | S500 | 4Matic |
| 2023 | Mercedes-Benz | S500 | 4Matic |
| 2024 | Mercedes-Benz | S500 | 4Matic |
| 2025 | Mercedes-Benz | S500 | 4Matic |
| 2021 | Mercedes-Benz | S580 | 4Matic |
| 2022 | Mercedes-Benz | S580 | 4Matic |
| 2023 | Mercedes-Benz | S580 | 4Matic |
| 2024 | Mercedes-Benz | S580 | 4Matic |
| 2025 | Mercedes-Benz | S580 | 4Matic |
| 2023 | Mercedes-Benz | S580e | 4Matic |
| 2024 | Mercedes-Benz | S580e | 4Matic |
| 2025 | Mercedes-Benz | S580e | 4Matic |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
