Nissens 891731 A/C Compressor

Nissens A/C Compressor 891731 for Mercedes-Benz

The Nissens 891731 A/C compressor is built to OE standards for Mercedes-Benz HVAC systems that demand stable cooling performance under load. It is engineered for low noise, reduced vibration, and durable operation in demanding driving conditions.

Key Features

• OE-standard A/C compressor construction from Nissens
• Compressor type 7SES17C with serpentine belt pulley design
• Designed for R134A and R1234YF refrigerant systems
• 12V electrical system with 2-pin connector
• Clutch included for direct replacement service
• Oil filled and supplied with O-rings included
• 6-groove pulley with 4.33 in. outside diameter

Detailed Description

Nissens part number 891731 is an A/C compressor for select Mercedes-Benz GLE, GLS, GL, and S-Class applications. It is built with attention to the compressor’s critical components, including the pulley, clutch, hub, bearing, and wobble plate, to support consistent pumping performance and controlled operating noise. This part cross-references UAC CO11729C for the same application.

Compatible Mercedes-Benz applications include 2016-2019 GLE350, 2016-2019 GLE400, 2017-2019 GLE43 AMG, 2019 GLE450, 2017-2019 GLS450, 2017-2019 GLS550, 2016-2019 GLE63 AMG, and 2015 S63 AMG. The Nissens 891731 is also listed for additional GLE, GLS, and GL variants shown in the fitment data.

Common Problems This Part Can Address

• Weak or inconsistent cabin cooling
• Compressor noise from worn internal components
• Excessive vibration from a failing clutch or pulley assembly
• Loss of refrigerant compression in the A/C system
• A/C system performance issues on Mercedes-Benz GLE and GLS models

Installation Notes and Tips

Before installation, drain the shipping oil and refill the compressor with the correct oil specification for the vehicle and refrigerant system. Verify refrigerant type, connector style, pulley alignment, and belt routing before final assembly. Replace or inspect the system O-rings and confirm the A/C system is clean and properly evacuated before charging.

Fits 2016-2019 Mercedes-Benz GLE350, N/A; 2016-2019 Mercedes-Benz GLE400, N/A; 2017-2019 Mercedes-Benz GLE43 AMG, N/A; 2019 Mercedes-Benz GLE450, N/A; 2017-2019 Mercedes-Benz GLS450, N/A; and additional listed Mercedes-Benz GLE, GLS, GL, and S-Class applications.

Quality Assurance

Nissens manufactures this compressor to OE-level standards and validates it for high-stress operating conditions. The design focus on the pulley, clutch, hub, bearing, and wobble plate supports dependable service life and consistent A/C performance in Mercedes-Benz applications.