Denso 471-1121 A/C Compressor

Denso 471-1121 A/C Compressor Overview

The Denso 471-1121 A/C compressor is a factory-new replacement built for vehicles that use R134A refrigerant, a serpentine belt drive, and bolt tangent mounting. As an OE supplier to major vehicle manufacturers, Denso builds this compressor to OE standards for accurate fitment and consistent air conditioning performance.

Compatible With BMW 540i, M5, Z8, 740i, and 740iL applications, plus Bentley Arnage fitment, this compressor is a direct choice for drivers replacing a worn or failed unit. The Denso 471-1121 is also cross-referenced to select aftermarket and OE numbers for the same application.

Key Features

• Part number: 471-1121
• Refrigerant type: R134A
• Clutch maximum diameter: 110.0
• Serpentine pulley belt type
• Bolt tangent mounting type
• Factory-new compressor built to OE specifications
• Designed by the original OE supplier for the application

Detailed Product Description

Denso A/C compressor 471-1121 is engineered for precise replacement on select BMW and Bentley vehicles. It is specified for 1998-2003 BMW 540i, 2000-2003 BMW M5, 2000-2003 BMW Z8, 1998-2001 BMW 740i, 1998-2001 BMW 740iL, and 1999 Bentley Arnage. The compressor is configured for R134A systems and uses a serpentine belt drive with bolt tangent mounting, helping ensure the correct physical and system match for the listed applications.

This part cross-references DENSO Auto Parts 447160-0342 and UAC CO105118C for the same application.

What This Compressor Helps Address

• Loss of cabin cooling from a seized or worn compressor
• Noisy A/C operation caused by internal compressor wear
• Inconsistent refrigerant circulation in R134A systems
• Incorrect belt-driven compressor replacement on BMW 540i, M5, Z8, 740i, and 740iL models
• Fitment issues when replacing the original compressor on a 1999 Bentley Arnage

Installation Notes and Tips

Verify refrigerant type, clutch diameter, belt type, and mounting style before installation. Confirm system cleanliness and inspect related A/C components, including the condenser, expansion device, and receiver/drier or accumulator, before charging the system. Always match the compressor to the vehicle’s listed year, make, and model application.

Quality Assurance

Denso is one of the major OE suppliers of A/C compressors, and this First Time Fit unit is manufactured and tested to OE standards for factory-new replacement quality. The part is built by the original system designer for the application, supporting accurate fit and dependable operation on the listed BMW and Bentley vehicles.