Denso 471-1227 A/C Compressor

Reliable A/C Compressor for Mercedes-Benz Models

The Denso 471-1227 A/C compressor is engineered to restore efficient air conditioning performance in select Mercedes-Benz vehicles. Designed specifically for models such as the 400E, 500E, 500SL, E420, E500, and SL500, this compressor ensures compatibility and reliable operation.

• Compatible with Mercedes-Benz 400E, 500E, 500SL, E420, E500, and SL500
• Uses R134a refrigerant for effective cooling
• Clutch maximum diameter of 120.0 mm for precise engagement
• Serpentine pulley belt type for smooth power transmission
• Bolt tangent mounting type for secure installation

Technical Details and Specifications

The Denso 471-1227 A/C compressor is designed to work with R134a refrigerant, the standard for many modern automotive air conditioning systems. Its clutch has a maximum diameter of 120.0 mm, which ensures proper engagement and disengagement during operation. The serpentine pulley belt type allows for efficient power transfer from the engine, reducing wear and improving longevity. The bolt tangent mounting type provides a secure and stable fitment, minimizing vibration and ensuring consistent performance.

Applications and Common Issues Addressed

This A/C compressor is compatible with a range of Mercedes-Benz models, including the 400E, 500E, 500SL, E420, E500, and SL500. It is designed to address several common air conditioning system problems:

• Loss of cooling efficiency due to compressor failure
• Clutch slippage or failure causing intermittent A/C operation
• Unusual noises from the compressor assembly
• Refrigerant leaks related to compressor seals
• Inconsistent compressor engagement affecting cabin comfort

Installation Notes and Tips

When installing the Denso 471-1227 A/C compressor, ensure the system is properly evacuated and recharged with R134a refrigerant. Verify the clutch maximum diameter matches the vehicle specifications to avoid fitment issues. Use the bolt tangent mounting points for secure attachment, and inspect the serpentine belt for wear or damage before reassembly. Proper torque specifications should be followed to maintain mounting integrity.

Quality Assurance and Warranty Information

Denso manufactures this A/C compressor to meet OEM standards for durability and performance. Each unit undergoes rigorous quality control to ensure reliable operation in Mercedes-Benz vehicles. The part number 471-1227 is backed by a limited warranty covering defects in materials and workmanship, providing confidence in its long-term use.