Bilstein 44-239978 B4 OE Replacement (Air) – Air Suspension Strut
Air Spring with Monotube Shock Absorber
Features:
- Restores original functionality 100%
- 100% OE quality and comfort
- Manufactured with 100% new parts for maximum reliability and safety
Bilstein B4 OE Replacement (Air) dampers are designed to replace the original air suspension systems on many European brand vehicles. Bilstein is an OE supplier for air suspension systems; the quality of these products meets, and typically exceeds, the standards set forth by the vehicle’s manufacturer. Bilstein B4 OE Replacement (Air) dampers are designed to connect directly into the original connectors on the vehicle, ensuring modification-free installation and restoration of the original feel of the vehicle.
Attributes:
| Series | B4 OE Replacement (Air) |
| PartType | Air Spring Module |
| Finish | Black Paint |
| Collapsed Length (IN) | 22.83 |
| Extended Length (IN) | 27.63 |
| Title | Bilstein Shock Absorbers |
| Boot Included | No |
| Spring Seat Included | No |
| Internal Design | Monotube |
| Collapsed Length (mm) | 580.0 |
| Segment | Air Springs |
| Lower Mount Type | Clevis |
| Extended Length (mm) | 702.0 |
| Upper Mount Type | Multiple Studs |
Vehicle Applications:
| Make | Model | Years |
| Mercedes-Benz | S550 | 2014 to 2017 |
| Mercedes-Benz | S550e | 2015 to 2017 |








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