Bosch 1986AD1077 A/C Compressor

Bosch A/C Compressor for BMW HVAC Repair

The Bosch 1986AD1077 A/C compressor is a direct-fit replacement built for BMW cooling system service. It is engineered for R134A refrigerant systems and uses PAG 46 oil, with OE-matched casting, pulley, and connector specifications for a cleaner installation on select BMW 325Ci, 330Ci, M3, and X3 applications.

Key Features

• Bosch A/C Compressor, part number 1986AD1077
• Designed for R134A refrigerant systems
• Compatible refrigerant oil type: PAG 46
• Oil filled: Yes
• 7SBU16C compressor type
• 12-volt coil voltage
• 4-groove pulley with 110 mm outside pulley diameter
• Without seal ring
• OE-aligned casting, pulley, and connector specifications

Product Details

Bosch A/C compressors are developed using OE manufacturing experience and released through a controlled testing process that includes endurance, performance, vibration, leak, salt spray, and noise evaluation. The Bosch A/C Compressor 1986AD1077 is built to match factory specifications for fit and function, making it a practical choice for BMW HVAC repair where compressor replacement is required. This part cross-references BMW 64526916232 for the same application.

Compatible With BMW 325Ci, BMW 330Ci, BMW M3, BMW X3, BMW 325i, BMW 325xi, BMW 330i, and BMW 330xi applications listed below. The Bosch 1986AD1077 supports factory-style service on 2003-2006 BMW 325Ci, 330Ci, and M3 models, plus 2004-2006 BMW X3 and 2004-2005 BMW 325i, along with 2003-2005 BMW 325xi, 330i, and 330xi.

Common Problems This Part Can Address

• Loss of cabin cooling from a worn or seized compressor
• Noisy A/C operation caused by internal compressor wear
• Refrigerant leakage at the compressor assembly
• Reduced system performance from failing compressor internals
• Drive belt noise related to compressor pulley issues

Installation Notes and Tips

Verify refrigerant type, oil specification, pulley configuration, and connector alignment before installation. This compressor is specified for PAG 46 oil and R134A systems, and it is supplied without a seal ring. Follow BMW service procedures for evacuation, oil balancing, and system recharge after replacement. Confirm the vehicle application by year and model before ordering the Bosch 1986AD1077.

Quality Assurance

Bosch subjects this A/C compressor to release testing that checks endurance, performance, vibration, leak resistance, salt spray exposure, and operating noise. Those validation steps help ensure consistent fitment and dependable operation for BMW HVAC service.