Arnott AS-2121 Air Suspension Shock - Rear

Rear Air Shock Absorber for Cadillac DeVille and Seville

Arnott AS-2121 is a rear air shock absorber kit that replaces the vehicle’s electronic rear shocks with a passive air shock setup. It keeps the rear air leveling system operational while using a direct plug-in design for straightforward integration with the vehicle computer system.

Built for Cadillac DeVille and Cadillac Seville rear applications, this Arnott NEW series part is engineered for drivers who need a dependable replacement for electronic ride control components without altering the factory system.

Key Features

• Rear air shock absorber for air ride suspension systems
• Converts electronic shocks to a passive air shock design
• Maintains rear air leveling system operation
• Direct plug-in connection with no vehicle alterations
• Twin-tube internal construction with hydraulic damping
• Protective aluminum can for added durability
• Spring-assisted design with progressive spring rate
• Upper stud mount and lower cross pin mount
• Mounting hardware included

Product Details

Arnott AS-2121 is part of the NEW product line, focused on replacement solutions for air suspension service. This rear air shock absorber uses a twin-tube, hydraulic internal design with spring support and progressive spring rate characteristics. It includes spring isolators and a protective aluminum can, and it is built for standard-grade service in rear air ride applications. The plug-in design allows the shock to connect directly to the vehicle’s computer system, helping preserve factory functionality on Cadillac DeVille and Cadillac Seville models with rear electronic ride control.

This part cross-references Cadillac OE numbers 22064872 and 22064873 for the same application.

Common Problems This Part Addresses

• Rear shock failure on electronic ride control systems
• Loss of rear leveling function
• Ride quality issues caused by worn air shocks
• Warning lights or fault codes related to rear suspension components
• Need for a passive replacement that keeps factory leveling operation active

Installation Notes and Tips

• Fits 2000-2005 Cadillac DeVille, rear, non-electronic/passive replacement with solenoid resistor for bypassing electronic ride.
• Fits 1998-2001 Cadillac Seville, rear, non-electronic/passive replacement with solenoid resistor for bypassing electronic ride.
• Fits 2001 Cadillac Seville, rear, non-electronic/passive replacement; includes solenoid resistor to bypass electronic ride; with Real Time Damping RPO F45.
• Fits 2000 Cadillac Seville, rear, non-electronic/passive replacement; includes solenoid resistor to bypass electronic ride; with Real Time Damping RPO F45.
• Verify rear suspension configuration and RPO details before installation.

Quality Assurance

Arnott backs this air shock absorber with a Limited Lifetime Warranty. The AS-2121 is built as a direct-fit replacement for rear Cadillac air suspension service, with plug-in electrical integration and factory-style leveling system operation.