Denso 471-1227 A/C Compressor

Denso 471-1227 A/C Compressor Overview

The Denso 471-1227 A/C compressor is a factory-new replacement built for Mercedes-Benz air conditioning systems that use R134A refrigerant. As an OE-supplier part, it is manufactured and tested to OE standards for proper fit and consistent compressor performance.

Compatible With Mercedes-Benz SL500, E420, E500, 400E, 500E, and 500SL applications listed below, this compressor is specified for vehicles with a serpentine belt drive and bolt tangent mounting style.

Key Features

• Refrigerant type: R134A
• Clutch maximum diameter: 120.0 mm
• Serpentine pulley belt type
• Bolt tangent mounting type
• Factory-new Denso compressor for OE-style fit and function
• Part number: 471-1227

Detailed Description

Denso 471-1227 is an A/C compressor engineered for Mercedes-Benz vehicles that require an R134A compressor with a 120.0 mm clutch diameter. Denso’s background as an original equipment supplier means this unit is built around the same design standards used in the systems it serves, helping support correct belt alignment, mounting, and refrigerant system operation. This part number 471-1227 is a direct-fit choice for Mercedes-Benz SL500, E420, E500, 400E, 500E, and 500SL models within the listed years.

This part cross-references ACDelco 15-20538 and UAC CO9999R for the same application.

What This Compressor Helps Address

• Loss of cabin cooling from a worn or failed compressor
• Noisy compressor operation caused by internal wear
• Refrigerant circulation problems that reduce A/C output
• Incorrect compressor fitment on Mercedes-Benz R134A systems
• Belt-drive concerns tied to a mismatched pulley or mounting style

Installation Notes and Tips

• Verify the vehicle uses R134A refrigerant before installation.
• Confirm the clutch diameter, serpentine belt setup, and bolt tangent mounting style match the original unit.
• Inspect the A/C system for contamination, leaks, and related wear before compressor replacement.
• Follow proper evacuation, oil, and recharge procedures for the vehicle’s A/C system.
• Use the listed fitment details to confirm Mercedes-Benz SL500, E420, E500, 400E, 500E, or 500SL application coverage.

Quality Assurance

Denso manufactures this compressor to strict OE standards and tests it as a factory-new replacement. The brand’s OE supplier background supports accurate fitment and dependable system integration for Mercedes-Benz A/C service.

Vehicle Fitment

• Fits 1994-1999 Mercedes-Benz SL500, N/A, w/ DENSO 10PA17C
• Fits 1994-1995 Mercedes-Benz E420, N/A, 6-Groove Pulley
• Fits 1994 Mercedes-Benz E500, N/A, 6-Groove Pulley
• Fits 1992-1993 Mercedes-Benz 400E, N/A, 6-Groove Pulley, R134a
• Fits 1992-1993 Mercedes-Benz 500E, N/A, 6-Groove Pulley, R134a
• Fits 1990-1993 Mercedes-Benz 500SL, N/A, R134A A/C Compressor