Suspensia X31BU0278 Suspension Control Arm Bushing - Rear Left Forward

Suspension Control Arm Bushing for Mercedes-Benz

Restore rear suspension stability with this Suspensia suspension control arm bushing, part number X31BU0278. It is a direct-fit replacement for select Mercedes-Benz S-Class and CL-Class applications that use the rear left forward position with upper bushing configuration.

• Suspension control arm bushing for the rear left forward position
• Fits applications with upper bushing configuration
• OE-style replacement for select Mercedes-Benz S450, S560, S63 AMG, S65 AMG, S550, S550e, S600, S350, S400, CL550, and CL63 AMG models
• Suspensia part number X31BU0278
• Cross-reference: 2223500192

Fitment Details

• Fits 2018-2020 Mercedes-Benz S450, rear left forward, with upper bushing.
• Fits 2018-2020 Mercedes-Benz S560, rear left forward, with upper bushing.
• Fits 2014-2020 Mercedes-Benz S63 AMG, rear left forward, with upper bushing.
• Fits 2008-2010 Mercedes-Benz S63 AMG, rear left forward, with upper bushing.
• Fits 2015-2020 Mercedes-Benz S65 AMG, rear left forward, with upper bushing.
• Fits 2007-2017 Mercedes-Benz S550, rear left forward, with upper bushing.
• Fits 2015-2017 Mercedes-Benz S550e, rear left forward, with upper bushing.
• Fits 2015-2017 Mercedes-Benz S600, rear left forward, with upper bushing.
• Fits 2007-2014 Mercedes-Benz CL550, rear left forward, with upper bushing.
• Fits 2012-2013 Mercedes-Benz S350, rear left forward, with upper bushing.
• Fits 2013 Mercedes-Benz S400, rear left forward, before 03/22/2013.
• Fits 2010-2012 Mercedes-Benz S400, rear left forward, with upper bushing.
• Fits 2008-2010 Mercedes-Benz CL63 AMG, rear left forward, with upper bushing.

Detailed Description

This Suspensia control arm bushing is manufactured in Turkey in IATF 16949 certified factories and backed by the engineering standards of ISC Industries, a supplier to OE Tier 1 customers including Ford, Fiat/Chrysler, Volkswagen Group, and Renault/Nissan. For Mercedes-Benz S-Class and CL-Class vehicles, the bushing supports the rear left forward control arm location and is specified for applications with an upper bushing. Use X31BU0278 when replacing worn suspension bushings on compatible Mercedes-Benz S450, S560, S63 AMG, S65 AMG, S550, S550e, S600, S350, S400, CL550, and CL63 AMG models.

Common Repair Symptoms

• Rear suspension looseness or clunking over bumps
• Excessive play in the control arm mounting point
• Uneven tire wear related to rear suspension movement
• Steering or chassis instability caused by worn bushings
• Noise from deteriorated rear suspension bushings

Installation Notes

Verify the rear left forward position and upper bushing configuration before ordering. Confirm model year and production date for the 2013 Mercedes-Benz S400, since fitment changes before 03/22/2013. Professional installation is recommended because control arm bushing replacement typically requires suspension disassembly and proper alignment afterward.

Quality Assurance

Suspensia parts are produced in IATF 16949 certified factories in Turkey, with manufacturing support from ISC Industries. This part number X31BU0278 is built for the specified Mercedes-Benz applications and cross-references 2223500192 for the same application.