Dorman 34165 A/C Compressor Bypass Pulley

Reliable A/C Compressor Bypass Pulley for Ford, Mazda, and Mercury

The Dorman 34165 A/C Compressor Bypass Pulley is designed to restore proper function to your vehicle's HVAC system. Engineered for select Ford, Mazda, and Mercury models, this pulley ensures smooth serpentine belt operation and efficient compressor bypass performance.

• Durable aluminum bracket for secure mounting
• Plastic pulley with 120mm outside diameter
• Includes mounting bracket and installation instructions
• Compatible with serpentine belt systems
• Designed for Ltr4 compressor type
• Package contains one pulley and bracket assembly

Product Details and Specifications

The Dorman 34165 features a robust aluminum bracket paired with a plastic pulley, optimized for durability and reliable operation. The pulley measures 120mm in outside diameter, fitting serpentine belt configurations commonly found in Ford Escort, Mazda 323, Mercury Capri, and Mercury Tracer models. This part is specifically designed for vehicles equipped with the Ltr4 compressor type. While mounting hardware is not included, the package provides a mounting bracket and clear installation instructions to facilitate a straightforward replacement process.

Compatible Vehicles and Applications

This A/C compressor bypass pulley is compatible with the following makes and models:

• Ford Escort
• Mazda 323
• Mercury Capri
• Mercury Tracer

Use this part to address issues related to the A/C compressor bypass system in these vehicles, ensuring proper belt tension and system operation.

Common Issues Addressed by This Part

• Worn or damaged A/C compressor bypass pulley causing belt slippage
• Noise or squealing from the serpentine belt area
• Improper belt alignment affecting HVAC system performance
• Failure of the compressor bypass function leading to A/C system inefficiency
• Broken or cracked pulley components impacting belt routing

Installation Notes and Tips

Installation of the Dorman 34165 pulley requires removal of the old pulley and bracket assembly. The included mounting bracket and installation instructions provide guidance for proper fitment. Note that mounting hardware is not included, so retain original bolts or source compatible fasteners. Ensure the serpentine belt is properly routed and tensioned after installation to avoid premature wear.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. The 34165 A/C Compressor Bypass Pulley undergoes quality checks to ensure durability and reliable performance. Installation instructions are included to support proper replacement. Please consult Dorman's warranty policy for specific coverage details.