Introduction
When your Mercedes air suspension fails, three names dominate the replacement market: Genuine Mercedes (OEM), Arnott, and Bilstein. This head-to-head comparison evaluates each option on the factors that matter most to workshops and vehicle owners.
1. Arnott Air Suspension
Heritage: US-based, 30+ years specializing in air suspension remanufacturing. Products include remanufactured OEM cores with upgraded seals and coatings, plus new aftermarket designs.
Key Advantage: "Arnott Lifetime Warranty" on remanufactured products. Price Range: $400–$850 per strut.
Best For: Cost-conscious owners who still want peace of mind.
2. Bilstein (B4 Air Suspension Module)
Heritage: German engineering giant, OEM supplier to multiple automakers. Brand-new aftermarket air struts engineered to OE specifications.
Key Advantage: Bilstein's reputation for monotube damper technology and rigorous testing. Price Range: $600–$1,200 per strut.
Best For: Those who prioritize ride quality and prefer new over remanufactured.
3. Genuine Mercedes-Benz (OEM)
Identical to factory-installed parts, manufactured by Continental/ContiTech. Zero fitment risk, maintains original ride calibration. Price Range: $1,200–$2,200 per strut.
Comparison Matrix
| Factor | OEM | Bilstein | Arnott |
|---|
| Price | | | |
| Ride Quality | | | |
| Warranty | | | |
| Value for Money | | | |
Final Recommendation
Arnott for budget + lifetime warranty. Bilstein for ultimate ride quality without OEM pricing. OEM for late-model cars or lease returns where authenticity matters.
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