Bosch 1986AD1126 A/C Compressor

Bosch A/C Compressor for BMW HVAC Repair

Bosch A/C Compressor Part Number 1986AD1126 is a direct replacement compressor for select BMW models with R134A or R1234YF refrigerant systems. It is built with OE manufacturing experience and tested for endurance, performance, vibration, leak, salt spray, and noise resistance to support consistent cabin cooling.

This Bosch A/C compressor line focuses on OE-style fit and function, with precise casting, pulley, and connector specifications that align with factory requirements. For BMW 230i, 330i, 340i, 430i, 440i, and M240i applications, 1986AD1126 provides a service-ready replacement for failed or noisy compressor units.

Key Features

• Brand: Bosch A/C Compressor
• Part Number: 1986AD1126
• Refrigerant type: R134A and R1234YF
• Compatible compressor oil: PAG YF 46
• Oil filled: Yes
• Compressor type: 6SAS14A
• 12-volt coil voltage
• 6-groove pulley with 110 mm outside pulley diameter
• Includes seal ring

Detailed Description

Bosch 1986AD1126 is an A/C compressor for BMW HVAC systems that require a 6SAS14A compressor configuration, 12-volt coil voltage, and a 6-groove pulley setup. It is oil filled and specified for PAG YF 46 lubricant, helping simplify replacement service when restoring air conditioning performance. The compressor is engineered to match OE casting, pulley, and connector dimensions for a cleaner factory-style installation.

Fitment includes 2017-2021 BMW 230i and 230i xDrive, 2017-2018 BMW 330i, 2017-2019 BMW 330i xDrive and 330i GT xDrive, 2016-2018 BMW 340i and 340i xDrive, 2017-2020 BMW 430i, 430i Gran Coupe, 430i xDrive, 430i xDrive Gran Coupe, 440i, 440i Gran Coupe, 440i xDrive, and 440i xDrive Gran Coupe, plus 2017 BMW M240i and M240i xDrive. This part cross-references Bosch applications using OE number 64529299328 for the same application.

What It Helps Fix

• Loss of cold air from compressor wear or internal failure
• Unusual compressor noise during A/C operation
• Refrigerant circulation problems that reduce cooling output
• Leak-related A/C performance loss at the compressor assembly
• Drive belt load issues caused by a failing compressor pulley assembly

Installation Notes and Tips

Verify refrigerant type, oil specification, pulley groove count, and connector match before installation. Flush the system as needed, replace contaminated components when required, and evacuate and recharge the system to the correct specification after installation. Confirm the vehicle uses the listed BMW application before ordering, especially on 2017-2021 BMW 230i, 2017-2020 BMW 430i, and 2016-2018 BMW 340i models.

Quality Assurance

Bosch subjects this compressor line to release testing that includes endurance, performance, vibration, leak, salt spray, and noise evaluation. Those checks are used to verify durability and OE-level dimensional accuracy for BMW A/C service applications.