-6%
Bilstein B4 OE Replacement rear right strut full view
Click to zoom in

Bilstein 2021+ Mercedes-Benz S500/S580 B4 OE Replacement (Air) Monotube Strut - Rear Right

Bilstein
BIL44-400200
651860953069
Shocks and Struts
10 Units In Stock - Ships Next Business Day
$ 1,386.00 $ 1,299.00
FREE Ground Shipping!
$ 1,299.00

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

Request For Information

Have questions about Bilstein 2021+ Mercedes-Benz S500/S580 B4 OE Replacement (Air) Monotube Strut - Rear Right? Fill out the form below and we'll get back to you by the next business day.
Bilstein

Bilstein

Bilstein shocks and suspension are stocked at Black Ops Auto Works across the full product range, including B4 OE replacement shocks, B6 performance shocks, B8 5100 ride height adjustable shocks, B8 6112 and 8112 suspension kits, B8 TerraSport lift kits, B12 Pro-Kit systems, B14 coilovers, B16 DampTronic suspension, and EVO Series kits. Every product is filterable by year, make, model, trim, and drivetrain so the correct Bilstein part ships the first time. Black Ops Auto Works carries 2,108 Bilstein SKUs spanning trucks, SUVs, crossovers, and European performance platforms. What This Collection Covers Bilstein is a monotube shock and suspension manufacturer known for consistent damping control across a wide range of applications, from OE-style replacement to serious off-road lift setups to European performance suspension. Product Categories B4 OE replacement shocks and struts, B6 performance shocks, B8 5100 and 5160 shocks, B8 6100 and 6112 suspension kits, B8 8100 and 8112 rese...

View Bilstein Products
Shocks and Struts

Shocks and Struts

Shocks and struts for cars, trucks, SUVs, and Jeeps are stocked at Black Ops Auto Works. Shop front and rear shocks, loaded strut assemblies, monotube shocks, twin-tube shocks, reservoir shocks, and steering dampers for daily drivers, lifted trucks, tow rigs, off-road builds, and muscle cars on Hellcat, Trackhawk, TRX, HEMI, LS, LT, Coyote, and EcoBoost platforms. Every shock and strut is filterable by year, make, model, trim, drivetrain, front or rear position, and ride height so the correct part ships the first time. Black Ops Auto Works carries 5,188 shock and strut SKUs across construction type, application, and vehicle use. What This Category Covers Shocks and struts damp spring oscillation so the tire stays planted on the road and are the most common suspension replacement job on any vehicle. A shock absorber is a standalone damping unit that bolts between the chassis and axle or lower control arm. A strut is a structural suspension member that combines damping with the sp...

View Shocks and Struts Products
Suspension

Suspension

Suspension parts and complete kits for cars, trucks, SUVs, Jeeps, and off-road builds are stocked at Black Ops Auto Works. Shop coilovers, lowering springs, lift kits, leveling kits, shocks and struts, sway bars, control arms, tie rods, ball joints, bushings, chassis bracing, alignment hardware, air suspension, and complete stage kits from Bilstein, KW, Ohlins, Fox, KING, ICON, BC Racing, Silvers, Eibach, H&R, Swift Springs, Whiteline, Energy Suspension, Moog, SPC Performance, Rough Country, ReadyLIFT, BDS, Skyjacker, Air Lift, Firestone, and Black Ops Auto Works. Start with a matched shock and spring package or a full coilover kit, then layer in sway bars, chassis bracing, and camber adjustment hardware. Every part is filterable by year, make, model, trim, and drivetrain to confirm fitment before ordering. What This Category Covers Suspension is the highest-leverage handling upgrade on any vehicle. A properly matched shock, spring, and sway bar package produces measurable i...

View Suspension Products
Military & First Responder Discounts

Military & First Responder Discount Program

Black Ops Auto Works proudly honors active duty military, veterans, National Guard, reserves, police officers, firefighters, and EMTs with an exclusive 5% discount on all performance parts and carbon fiber upgrades. Verify instantly and start saving today.

Learn More & Apply

Your cart

×