Nissens 891655 A/C Compressor

OE-Standard A/C Compressor

This Nissens A/C compressor is built to OE standards for Subaru HVAC systems that use R134A refrigerant. It is engineered for stable pumping performance, low noise, and reduced vibration in demanding service conditions.

• OE-standard compressor construction for consistent A/C operation
• R134A refrigerant and PAG 100 oil specification
• Clutch included with O-rings included
• DKV10R compressor type with 12-volt electrical system
• 4-groove serpentine pulley for belt-driven applications

Detailed Product Overview

Nissens part number 891655 is an A/C compressor designed around critical rotating components, including the pulley, clutch, hub, bearing, and wobble plate. That design focus supports efficient refrigerant pumping while controlling noise and vibration. For Subaru WRX, Subaru WRX STI, Subaru Forester, and Subaru Impreza applications, this compressor matches the specified refrigerant and oil requirements for direct service replacement. Part number 891655 is also cross-referenced to UAC CO11227C for the same application.

The compressor is oil filled, uses a single-pin connector, and includes two O-rings. Its 4.06-inch pulley diameter and serpentine belt drive make it a fitment-specific replacement for vehicles equipped with the listed compressor configuration. Nissens 891655 is built for Subaru WRX STI and related Subaru applications where OE-style compressor performance and durability matter.

Common A/C Problems It Can Address

• Loss of cabin cooling from compressor wear or internal failure
• Excessive A/C system noise from worn pulley or clutch components
• Vibration during compressor operation
• Incorrect refrigerant or oil specification during compressor replacement
• Compressor-related belt drive issues in matched serpentine setups

Installation Notes and Tips

Fits 2015-2021 Subaru WRX STI, N/A; 2015-2016 Subaru WRX, N/A; 2007-2014 Subaru Forester, N/A; and 2008-2014 Subaru Impreza, N/A. The fitment notes state that the compressor is filled with shipping oil only and must be drained and refilled before installation. Verify refrigerant type, oil type, connector style, and pulley configuration before service. Use the listed PAG 100 oil specification and confirm system cleanliness before returning the A/C system to operation.

Quality Assurance

Nissens manufactures compressors to OE standards and tests them for performance under high-stress conditions. The brand’s component-level engineering targets durability, pumping efficiency, and controlled operating noise for long-term service use.