Bosch 1986AD1121 A/C Compressor

Bosch A/C Compressor for BMW HVAC Repair

This Bosch A/C compressor is built for BMW HVAC service where OE-style fit, refrigerant compatibility, and dependable operation matter. It is engineered for R134A systems and comes oil filled with PAG 46, making it a direct replacement choice for select BMW 128i, 328i, 328i xDrive, and 328xi applications.

Part number 1986AD1121 is part of Bosch’s A/C Compressor line, which draws on OE manufacturing experience and a controlled release process with testing for endurance, performance, vibration, leak, salt spray, and noise. The result is a compressor built to match OE casting, pulley, and connector specifications for easier service work.

Key Features

• Brand: Bosch A/C Compressor
• Part number: 1986AD1121
• Refrigerant type: R134A
• Compatible refrigerant oil: PAG 46
• Oil filled: Yes
• Compressor type: 7SEU17C
• 12V coil voltage
• 6-groove pulley with 110 mm outside diameter
• Supplied with seal ring

Detailed Description

Designed for BMW climate control repair, Bosch 1986AD1121 is an OE-style A/C compressor that supports proper refrigerant circulation in the vehicle’s air conditioning system. It is a direct-fit replacement for 2008-2013 BMW 128i, 2007-2013 BMW 328i, 2009-2013 BMW 328i xDrive, and 2007-2008 BMW 328xi A/C compressor applications. This part cross-references BMW 64529122618 for the same application.

For buyers searching for a BMW 328i A/C compressor, BMW 128i compressor replacement, or a BMW 328xi HVAC compressor, this Bosch unit is built around OE specifications to help maintain correct pulley alignment, connector fit, and system operation.

What It Helps Fix

• Weak or no cabin cooling from a worn compressor
• Noise from a failing A/C compressor clutch or internal wear
• Refrigerant circulation problems in the HVAC system
• Leaks related to compressor seal wear
• Drive belt issues caused by pulley or alignment problems

Installation Notes and Tips

Verify the vehicle uses R134A refrigerant and PAG 46 oil before installation. Confirm pulley groove count, connector style, and compressor type match the original unit. Replace the seal ring as required by the service procedure, evacuate and recharge the system correctly, and inspect the condenser, expansion device, and lines for contamination before returning the vehicle to service.

Quality Assurance

Bosch subjects this compressor line to endurance, performance, vibration, leak, salt spray, and noise testing before release. Those checks support consistent operation in demanding conditions and help ensure the part meets OE-level dimensional and functional requirements.