Description
Bilstein B4 OE Replacement Air Spring Module – 2018–2020 Mercedes-Benz S450 | 44-275389 is an application-specific Bilstein suspension solution for Mercedes-Benz S450 2018-2020, S560e 2019-2020. For this road-focused application, the priority is controlled body motion and a composed ride without introducing unnecessary suspension changes. The exact Bilstein configuration should be matched to the vehicle's factory suspension equipment, especially where adaptive or air suspension is involved.
Why Bilstein B4 OE Replacement (Air) for This Application?
This B4 OE Replacement Air component is intended to restore the vehicle's original air-suspension function with an application-matched Bilstein replacement rather than converting the chassis to a conventional spring/damper layout. For the Mercedes-Benz application shown here, Bilstein assigns this product to Front Left, Front Right, Rear Left, Rear Right, so the part should be chosen by both chassis fitment and suspension position.
Application-Specific Product Details
- Bilstein Series: B4 OE Replacement (Air)
- Product Type:
- Application: Mercedes-Benz S450 2018-2020, S560e 2019-2020
- Position: Front Left, Front Right, Rear Left, Rear Right
- Country of Origin: DE
Choosing the Right Bilstein Setup
For this road-focused application, the priority is controlled body motion and a composed ride without introducing unnecessary suspension changes. The exact Bilstein configuration should be matched to the vehicle's factory suspension equipment, especially where adaptive or air suspension is involved. If the vehicle has been lowered, lifted, converted from factory electronic suspension, or carries substantial added weight, verify that this exact Bilstein series and part number matches that configuration before purchase.
Bilstein Application Notes
- Without Active Body Control
Part Numbers & Configurations
| Position / Configuration | Bilstein MPN | Listed Package Dimensions |
|---|---|---|
| Front Left | 44-275389 | L: 32.3 in; W: 7.5 in; H: 7.5 in |
| Front Right | 44-275396 | L: 32.3 in; W: 7.5 in; H: 7.5 in |
| Rear Left | 44-275426 | L: 37.6 in; W: 7.5 in; H: 7.5 in |
| Rear Right | 44-275433 | L: 37.6 in; W: 7.5 in; H: 7.5 in |
Each selectable variant corresponds to the Bilstein part number shown above. Order the quantity required for the positions being serviced.