Arnott MR-3448 Suspension Shock Absorber - Rear Left

Rear Left Magnetic Ride Shock for DTS

Arnott MR-3448 is an OES rear left magnetic ride shock for the 2006-2011 Cadillac DTS with the GM magnetorheological damper system. It also serves Buick Lucerne applications with Magneride RPO Code F55, giving you a direct-fit suspension shock absorber for vehicles that rely on electronically controlled damping.

• Standard-grade suspension shock absorber for rear left placement
• Monotube damper filled with magnetorheological fluid for rapid damping changes
• Electromagnetic coil control adjusts fluid viscosity and suspension stiffness
• Connects to the vehicle ECU with no modifications
• Direct replacement for Cadillac DTS and Buick Lucerne Magneride applications

How Arnott NEW Line Works

Arnott’s NEW product line focuses on aftermarket replacement parts that follow OE-style fitment and function. MR-3448 is built for the Cadillac DTS rear left corner and uses magnetic ride technology to preserve the adaptive response expected from the factory system. If you are searching for a Cadillac DTS rear left magnetic ride shock or an Arnott MR-3448 replacement, this part is built for that exact application.

This part cross-references Cadillac 15211375 and 19302768 for the same application.

Vehicle Fitment

• Fits 2006-2011 Buick Lucerne, rear left. Fits vehicles with Magneride RPO Code F55; NEW.
• Fits 2006-2011 Cadillac DTS, rear left. Fits vehicles with Magneride RPO Code F55; NEW.

Common Problems This Part Addresses

• Rear suspension ride quality that has become harsh or inconsistent
• Electronic damping faults related to the original magnetic ride shock
• Loss of adaptive response in the rear left suspension corner
• Noise or instability from a worn rear shock absorber
• Need for a direct replacement on a Cadillac DTS magnetic ride suspension system

Installation Notes and Tips

Verify the vehicle is equipped with the GM magnetorheological damper system and the correct rear left position before ordering. This shock connects to the ECU without modifications, but the suspension should be inspected for related wear, wiring issues, and mounting-point condition during replacement. For best results, confirm Magneride RPO Code F55 on the vehicle build data.

Quality Assurance

Arnott MR-3448 is an OES-style replacement built for electronically controlled magnetic ride applications. The manufacturer description identifies it as a rear left shock for Cadillac DTS models with GM magnetorheological damping, using a monotube design and magnetic fluid technology to match the OE adaptive ride behavior.