Arnott 211-320-12-25 Rear Air Suspension Spring for Mercedes-Benz E-Class and CLS-Class AMG

The Arnott 211-320-12-25 (A-2725) is a premium replacement rear air suspension spring designed specifically for Mercedes-Benz E-Class AMG and CLS-Class AMG vehicles equipped with semi-active air suspension systems. This aftermarket air spring delivers enhanced performance and durability compared to the original equipment.

Key Features:

• 4-ply Continental ContiTech rubber bladder for superior durability and longevity
• Custom-designed tapered piston engineered for a firmer performance ride
• CNC-machined crimping ring for leak-free operation and secure bladder retention
• Includes new airline fittings and upper retaining pin for complete installation
• Eliminates the need for a separate air reservoir found on factory units
• Pre-assembled design for straightforward installation

Technical Specifications:

• Position: Rear left or right
• System pressure: Up to 150 PSI (10 bar)
• OEM Part Number Cross-Reference: 2113201225, 2113201325, 211320122580, 211320132580

Important Installation Note: When replacing with Arnott A-2725, both rear air springs must be replaced simultaneously to maintain proper suspension balance and performance. Air springs contain solenoid valves that require Mercedes-Benz DAS Star diagnostic computer software for proper inflation after installation.

Backed by Arnott's reputation for American engineering and quality manufacturing, this air suspension spring offers a cost-effective alternative to expensive OEM replacements while maintaining or exceeding original equipment specifications.