SKU: 44-400200 | UPC: 651860953069
Bilstein B4 OE Replacement (Air) Monotube Strut – Rear Right for 2021+ Mercedes-Benz S500 / S580
The Bilstein 44-400200 B4 OE Replacement monotube strut is the direct factory-spec replacement for the rear right air suspension strut on the 2021+ Mercedes-Benz S500 and S580 (W223 chassis). Engineered to restore original ride quality, comfort, and handling while maintaining seamless integration with the factory Airmatic air suspension system. The monotube high-pressure gas design provides consistent damping, excellent heat dissipation, and long-term reliability exactly what you expect from Bilstein’s OE Replacement series.
Key Features
- Direct OE Replacement: Exact fit and function for Mercedes-Benz Airmatic air suspension
- Monotube Gas Pressure Technology: Superior ride control and fade-free performance
- Precise Damping Characteristics: Matches factory calibration for comfort and stability
- High-Quality Construction: Durable components built to withstand daily luxury driving
- Plug-and-Play Installation: No coding or modifications required
Specifications
| Specification | Detail |
|---|---|
| Part Number | 44-400200 |
| Position | Rear Right (Passenger Side) |
| Series | B4 OE Replacement (Air) |
| Design | Monotube Gas Pressure Strut |
| Compatibility | 2021+ Mercedes-Benz S500 / S580 with Airmatic Air Suspension |
| Installation | Bolt-On Direct Replacement |
| Country of Origin | Germany |
| Warranty | Limited Lifetime (Bilstein) |
| Shipping Weight | Approx. 18-22 lbs |
What’s Included
- One Bilstein B4 OE Replacement Rear Right Strut
- Installation Hardware (where applicable)
- Detailed Installation Instructions
Product Notes
- Designed specifically for vehicles equipped with factory Airmatic air suspension
- Sold individually order quantity 2 for a complete rear axle set (Left + Right)
- Professional installation and four-wheel alignment required after replacement
Installation Notes
- Estimated time: 2-4 hours per side (professional shop recommended)
- Requires air suspension tools and spring compressor
- No coding or programming needed direct plug-and-play with Airmatic system
This Part Fits
| Year | Make | Model | Notes |
|---|---|---|---|
| 2021+ | Mercedes-Benz | S500 / S580 | All Trims with Factory Airmatic Air Suspension – Rear Right Strut |
Why Choose Bilstein B4 OE Replacement Struts?
- Exact OE-spec performance and ride quality
- Monotube technology for superior damping and longevity
- Trusted by Mercedes-Benz enthusiasts and professional technicians worldwide
Frequently Asked Questions
- Q: Will this fit my 2023 Mercedes-Benz S580 with Airmatic?
A: Yes, 44-400200 is a direct fit for all 2021+ S500 / S580 models with factory air suspension. - Q: Do I need to buy the left strut too?
A: Yes, this is the rear right strut only. Order the matching left strut separately for a complete set. - Q: Does it work with the factory air suspension?
A: Yes, fully compatible with Mercedes-Benz Airmatic system. - Q: What is the warranty?
A: Covered by Bilstein’s limited lifetime warranty.
Shipping & Handling
- Method: UPS / FedEx Ground
- Availability: In stock ships same or next business day
- Packaging: Secure protective packaging
- Weight: Approx. 18-22 lbs
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