HomeHVAC > A/C Clutch and CompressorDorman 34190 A/C Compressor Bypass Pulley
Part #: 34190

Dorman 34190 A/C Compressor Bypass Pulley

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7 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Ford, Lincoln, and Mercury, Crown Victoria, Town Car, and Grand Marquis
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Overview of Dorman A/C Compressor Bypass Pulley 34190

The Dorman A/C Compressor Bypass Pulley 34190 is designed specifically for Ford, Lincoln, and Mercury vehicles, including the Crown Victoria, Grand Marquis, and Town Car models. This pulley assembly features a durable aluminum bracket paired with a plastic pulley, engineered to work with serpentine belt systems and FS10 compressor types.

  • Aluminum mounting bracket for strength and corrosion resistance
  • Plastic pulley with 114mm outside diameter for smooth operation
  • Includes mounting bracket and installation hardware for a complete replacement
  • Compatible with serpentine belt systems
  • Installation instructions included for ease of fitment
  • Designed for FS10 compressor type applications
  • Package contains one pulley, bracket, and all necessary hardware

Detailed Product Description

The Dorman 34190 A/C Compressor Bypass Pulley is engineered to replace worn or damaged pulleys on select Ford, Lincoln, and Mercury vehicles. The aluminum bracket provides a sturdy mounting base that resists corrosion and maintains alignment under engine stress. The plastic pulley, measuring 114mm in outside diameter, is designed to reduce noise and wear on the serpentine belt. This pulley assembly is compatible with FS10 compressor types commonly found in Crown Victoria, Grand Marquis, and Town Car models, ensuring proper fit and function.

Common Applications and Problem Resolution

This A/C compressor bypass pulley is used to address issues related to the compressor clutch system and belt routing. It is particularly useful for resolving:

  • Excessive belt noise or squealing caused by worn pulleys
  • Misalignment of the serpentine belt leading to premature belt wear
  • Failure of the compressor clutch engagement due to pulley damage
  • Vibration or wobbling in the A/C compressor pulley assembly
  • Corrosion or bracket fatigue affecting pulley stability

Installation Notes and Tips

The Dorman 34190 includes all necessary mounting hardware and installation instructions to facilitate a straightforward replacement process. It is recommended to verify the compressor type as FS10 before installation to ensure compatibility. Proper belt tension and alignment should be checked after installation to prevent premature wear. Use appropriate tools to avoid damage to the aluminum bracket or plastic pulley during installation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications for fit, form, and function. The 34190 A/C Compressor Bypass Pulley undergoes quality inspections to ensure durability and reliable performance. Installation instructions are included to support proper fitment. Warranty coverage details can be obtained from the product documentation or Dorman’s official resources.

BrandDorman
Part Number34190
Belt TypeSerpentine
Compressor TypeFs10
Installation Instructions IncludedYes
MaterialAluminum Bracket
MaterialPlastic Pulley
Mounting Bracket IncludedYes
Mounting Hardware IncludedYes
Number of Pulleys Included1
Outside Diameter114
Package ContentsPulley; Bracket; and Installation Hardware

This part fits 7 vehicles. Search below:

YearMakeModelPositionNotes
1993FordCrown VictoriaN/Aw/7 Rib Serpentine Belt
1993LincolnTown CarN/A
1993MercuryGrand MarquisN/Aw/7 Rib Serpentine Belt
1992FordCrown VictoriaN/A
1992LincolnTown CarN/A
1992MercuryGrand MarquisN/A
1991LincolnTown CarN/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.