Nissens 891801 A/C Compressor

Nissens A/C Compressor for Mercedes-Benz

The Nissens 891801 A/C compressor is built to OE standards for dependable cabin cooling in select Mercedes-Benz applications. It is engineered with critical rotating components designed to reduce noise and vibration while maintaining consistent pumping performance.

Compatible with 2013-2014 Mercedes-Benz E350, 2013-2014 Mercedes-Benz ML350, and 2013 Mercedes-Benz GLK350, this compressor is configured for R134A systems and uses PAG 46 refrigerant oil. The unit includes the clutch and O-rings and is set up for a 12V serpentine-belt drive.

Key Features

• OE-standard Nissens compressor construction for HVAC service
• Part number 891801 for select Mercedes-Benz E350, ML350, and GLK350 applications
• R134A refrigerant system compatibility
• PAG 46 oil type with oil-filled compressor
• 6-groove serpentine pulley design
• Clutch included for direct replacement service
• 6SBU16C compressor type with 12V electrical connection
• O-rings included and ready for sealing during installation

Detailed Description

Nissens 891801 is an A/C compressor for Mercedes-Benz E350, ML350, and GLK350 models listed above. It is designed around key compressor components such as the pulley, clutch, hub, bearing, and wobble plate to support stable operation, reduced NVH, and durable service in demanding HVAC conditions. This part cross-references OE-style numbers including 4711557 and 7422131 for the same application.

What This Compressor Helps Address

• Weak or inconsistent air conditioning output
• Compressor noise, vibration, or pulley-related wear
• Loss of refrigerant circulation in an R134A system
• Clutch engagement problems in the A/C drive system
• Sealing issues related to worn compressor O-rings

Installation Notes and Tips

Fits 2013-2014 Mercedes-Benz E350, N/A; 2013-2014 Mercedes-Benz ML350, N/A; and 2013 Mercedes-Benz GLK350, N/A. The fitment notes state that the compressor is filled with shipping oil only and must be drained and refilled before installation. Verify the system uses R134A refrigerant and PAG 46 oil, and confirm connector, pulley, and belt configuration before service.

Quality Assurance

Nissens manufactures compressors to OE standards and tests them for performance under high-stress operating conditions. The design focus on the pulley, clutch, hub, bearing, and wobble plate supports consistent operation and long-term durability in Mercedes-Benz HVAC service.