Arnott AS-2540 Remanufactured Front Air Strut Assembly

The Arnott AS-2540 is a completely remanufactured OE front air strut designed as a direct-fit replacement for the Mercedes-Benz S-Class (W221) equipped with Airmatic and ADS suspension systems. Arnott rebuilds each strut to exacting OEM tolerances, restoring factory ride height, handling, and comfort at a fraction of the dealer replacement cost.

Key Features:

• Continental ContiTech Air Spring Bladder: Each strut is fitted with a new rubber air spring sleeve sourced from Continental ContiTech, a trusted OEM-tier supplier, ensuring long-lasting airtight performance
• Improved Upper Seal Design: Arnott replaced the original epoxy upper seal — a known failure point prone to cracking and leaks — with a precision O-ring sealing system for superior reliability
• OEM-Quality Rebuild: Remanufactured to match original equipment specifications and tolerances for a bolt-on installation with no modifications required
• Maintains Factory Electronics: Compatible with the vehicle's existing Airmatic and ADS electronic damping control systems
• Sold Individually: One strut per package; replacing in pairs (driver and passenger side) is strongly recommended
• Limited Lifetime Warranty: Each strut is backed by Arnott's Limited Lifetime Warranty for long-term peace of mind

Arnott's remanufacturing process addresses the most common failure points of the original OEM design, delivering a more durable and cost-effective solution compared to dealership replacement parts. The AS-2540 is a core-exchange unit — the original strut must be returned after installation.