Dorman 34245 A/C Compressor Bypass Pulley

A/C Compressor Bypass Pulley for Honda and Acura

The Dorman 34245 A/C compressor bypass pulley provides a practical way to keep the original serpentine belt routing in place when the A/C compressor is no longer operating. It is built with an aluminum bracket and a plastic pulley for a direct-fit repair on select Honda and Acura applications.

Compatible with 1999-2004 Honda Odyssey, 2003-2004 Honda Pilot, and 2001-2002 Acura MDX, this bypass pulley helps restore accessory drive function without replacing the compressor assembly. The Dorman 34245 is a focused solution for vehicles using the 10S20C compressor type.

Key Features

• Brand: Dorman
• Part number: 34245
• A/C compressor bypass pulley for serpentine belt systems
• Aluminum bracket with plastic pulley construction
• Outside diameter: 2.5 in.
• Mounting bracket included for installation
• Designed for 10S20C compressor applications
• Package contents: bracket and pulleys

Detailed Description

The Dorman 34245 bypass pulley is made for vehicles where the A/C compressor has failed but the accessory drive belt still needs to operate normally. By replacing the inoperable compressor with a bypass pulley assembly, the belt can continue to drive the engine accessories while avoiding the drag and noise associated with a seized compressor. This part is a direct-fit option for Honda Odyssey, Honda Pilot, and Acura MDX models listed in the fitment data.

This part cross-references UAC CO29000C and Four Seasons 2053NK for the same application. If you are searching for a Dorman 34245 A/C compressor bypass pulley for 1999-2004 Honda Odyssey or 2001-2002 Acura MDX, this assembly matches the listed compressor type and belt configuration.

What It Helps Solve

• Broken or seized A/C compressor that prevents normal belt operation
• Noise or drag from an inoperable compressor
• Need to keep the serpentine belt routed correctly without compressor replacement
• Loss of accessory drive function caused by compressor failure
• Temporary or permanent bypass of a nonworking A/C compressor

Installation Notes and Tips

Verify the vehicle uses a serpentine belt and the 10S20C compressor type before ordering. Compare the original compressor mounting points and belt path to the bypass pulley assembly to confirm proper alignment. Installation instructions are not included, and mounting hardware is not included.

For fitment, this part is listed for 1999-2004 Honda Odyssey, 2003-2004 Honda Pilot, and 2001-2002 Acura MDX. Confirm the existing compressor configuration before installation to ensure the belt tracks correctly after replacement.

Quality Assurance

Dorman manufactures replacement components for repair applications where restoring vehicle operation matters. The 34245 bypass pulley is built with an aluminum bracket and plastic pulley to support the specified Honda and Acura fitments.