Bosch 1986AD1055 A/C Compressor

Bosch A/C Compressor for Mercedes-Benz

This Bosch A/C compressor is built for Mercedes-Benz HVAC systems that require R134A refrigerant and PAG 46 oil. Part number 1986AD1055 is engineered to match OE casting, pulley, and connector specifications for a direct replacement on select Mercedes-Benz GL450, ML350, S550, and related models.

Key Features

• Bosch A/C Compressor, part number 1986AD1055
• Uses R134A refrigerant and PAG 46 compressor oil
• Oil filled and supplied with seal ring
• 6-groove pulley with 100 mm outside pulley diameter
• 12-volt coil voltage for OE-style electrical fitment
• Built with Bosch OE manufacturing experience and release testing
• Tested for endurance, performance, vibration, leak, salt spray, and noise

Product Details

Bosch’s A/C compressor line focuses on OE-level fit and function for Mercedes-Benz climate control systems. The 1986AD1055 is produced to align with factory casting, pulley, and connector dimensions, helping maintain proper belt alignment and electrical connection during replacement. For shoppers searching for a Mercedes-Benz A/C compressor, Bosch 1986AD1055 offers a direct-fit solution for vehicles such as the GL450, ML350, R350, SL550, S500, and E500.

This part cross-references Bosch OE-style applications using part numbers such as 0012300211 and 0012301211 for the same application.

What It Helps Fix

• Weak or no cabin cooling from a failing compressor
• Noise from worn internal compressor components
• Refrigerant loss related to compressor seal or housing wear
• Improper belt drive operation caused by pulley wear
• HVAC performance issues on Mercedes-Benz GL450, ML350, and S550 models

Installation Notes

Verify refrigerant type, oil specification, pulley groove count, and connector match before installation. This compressor is oil filled and uses PAG 46, so the system should be serviced according to the vehicle’s A/C procedure before charging with R134A. Confirm the seal ring is in place and inspect the belt drive, condenser, and lines for contamination or damage before final assembly.

Fits 2007-2012 Mercedes-Benz GL450, A/C Compressor. Fits 2008-2012 Mercedes-Benz GL550, A/C Compressor. Fits 2011-2012 Mercedes-Benz SL550, A/C Compressor. Fits 2007-2009 Mercedes-Benz SL550, A/C Compressor. Fits 2006-2011 Mercedes-Benz ML350, A/C Compressor. Fits 2008-2011 Mercedes-Benz ML550, A/C Compressor. Fits 2006-2011 Mercedes-Benz R350, A/C Compressor. Fits 2010 Mercedes-Benz S550, A/C Compressor. Fits 2003-2008 Mercedes-Benz SL55 AMG, A/C Compressor. Fits 2006-2007 Mercedes-Benz ML500, A/C Compressor. Fits 2006-2007 Mercedes-Benz R500, A/C Compressor. Fits 2001-2006 Mercedes-Benz CL500, A/C Compressor. Fits 2003-2006 Mercedes-Benz CLK500, A/C Compressor. Fits 2006 Mercedes-Benz CLS500, A/C Compressor. Fits 2003-2006 Mercedes-Benz E500, A/C Compressor. Fits 2006 Mercedes-Benz S350, A/C Compressor. Fits 2002-2006 Mercedes-Benz S430, A/C Compressor. Fits 2000-2006 Mercedes-Benz S500, A/C Compressor. Fits 2003-2006 Mercedes-Benz SL500, A/C Compressor. Fits 2004-2005 Mercedes-Benz C240, A/C Compressor. Fits 2004-2005 Mercedes-Benz C320, A/C Compressor. Fits 2004-2005 Mercedes-Benz CLK320, A/C Compressor. Fits 2003-2005 Mercedes-Benz E320, A/C Compressor. Fits 2003-2004 Mercedes-Benz CLK55 AMG, A/C Compressor. Fits 2002-2003 Mercedes-Benz S55 AMG, A/C Compressor. Fits 2001-2002 Mercedes-Benz CL55 AMG, A/C Compressor.

Quality Assurance

Bosch subjects this compressor to endurance, performance, vibration, leak, salt spray, and noise testing before release. Those checks help confirm consistent operation under demanding conditions and support OE-style replacement quality for Mercedes-Benz HVAC service.