Denso 471-9188 A/C Compressor

Denso 471-9188 A/C Compressor Overview

The Denso 471-9188 is a factory-new A/C compressor built for vehicles that use R134A refrigerant, a serpentine belt drive, and an ear-and-tangent mounting style. It is engineered to OE standards for direct replacement performance on select Buick, Chevrolet, GMC, and Pontiac applications.

Compatible With 2004-2009 Buick LaCrosse, 2004-2005 Chevrolet Impala, 2004-2005 Chevrolet Monte Carlo, and 2004-2008 Pontiac Grand Prix. This part number, 471-9188, is specified for applications that require a compressor with a 121.0 mm clutch maximum diameter.

Key Features

• R134A refrigerant type
• Serpentine pulley belt type
• Ear and tangent mounting configuration
• 121.0 mm clutch maximum diameter
• Factory-new Denso compressor built to OE standards
• Direct-fit replacement for select GM vehicles

Detailed Product Description

Denso designs and manufactures A/C compressors as an OE supplier, and the 471-9188 reflects that original-equipment focus. It is built for the air conditioning system specifications used on select Buick LaCrosse, Chevrolet Impala, Chevrolet Monte Carlo, and Pontiac Grand Prix models, helping maintain proper compressor fit, belt alignment, and refrigerant system compatibility. If you are replacing a worn compressor on a 2004-2008 Pontiac Grand Prix or a 2005-2009 Buick LaCrosse, this unit is matched to the listed application details.

This part cross-references Four Seasons 67283 for the same application.

What This Compressor Helps Address

• Loss of cabin cooling from compressor wear or internal failure
• Noisy A/C operation caused by a failing compressor assembly
• Incorrect belt engagement related to compressor replacement mismatch
• Refrigerant system service needs on R134A-equipped vehicles
• Fitment issues when replacing the original OE compressor on GM applications

Installation Notes and Tips

Verify the vehicle’s refrigerant type, clutch diameter, belt type, and mounting style before installation. Confirm the application against the vehicle’s year, make, and model, especially for 2004-2005 Chevrolet Impala, 2004-2005 Chevrolet Monte Carlo, 2004-2008 Pontiac Grand Prix, and 2005-2009 Buick LaCrosse. Proper system evacuation, oil balance, and leak checks should be completed during A/C service to protect the replacement compressor and the rest of the HVAC system.

Quality Assurance

Denso manufactures this compressor to strict OE-level standards and tests it as a factory-new replacement part. As an OE supplier, Denso builds the 471-9188 with the application-specific fit and performance expected for the listed GM vehicles.