HomeHVAC > A/C Clutch and CompressorDorman 34225 A/C Compressor Bypass Pulley
Part #: 34225

Dorman 34225 A/C Compressor Bypass Pulley

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9 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Chevrolet, Pontiac, and Oldsmobile, Venture, Montana, and Silhouette
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Reliable A/C Compressor Bypass Pulley for Oldsmobile Montana and Pontiac Silhouette

The Dorman 34225 A/C Compressor Bypass Pulley is designed to provide a durable and efficient solution for your vehicle's HVAC system. Specifically compatible with Oldsmobile Montana and Pontiac Silhouette models, this pulley ensures proper serpentine belt operation and compressor function.

  • Constructed with an aluminum bracket for strength and corrosion resistance
  • Features a plastic pulley with a 101 mm outside diameter
  • Includes a mounting bracket and installation instructions for ease of replacement
  • Compatible with MSC130CVSG2 and MSC105CVSG5 compressor types
  • Designed for serpentine belt systems
  • Package contains one pulley and bracket assembly

Durable Materials and Precise Fitment

The Dorman 34225 bypass pulley combines a robust aluminum bracket with a lightweight plastic pulley to balance durability and performance. The 101 mm diameter pulley is engineered to maintain proper belt tension and alignment, reducing wear on the serpentine belt system. This part is tailored for use with MSC130CVSG2 and MSC105CVSG5 compressors, ensuring compatibility with the HVAC systems in Oldsmobile Montana and Pontiac Silhouette vehicles. The included mounting bracket simplifies installation, while the detailed instructions guide you through the replacement process.

Common Applications and Problem Resolution

This A/C compressor bypass pulley is used to maintain the proper function of the serpentine belt system when the compressor clutch is disengaged. It addresses several issues, including:

  • Eliminating belt slippage caused by worn or damaged pulleys
  • Resolving unusual noises from the A/C compressor area
  • Preventing premature serpentine belt wear due to misalignment
  • Restoring proper belt routing and tension in HVAC systems
  • Supporting compressor bypass operation in specific Oldsmobile and Pontiac models

Installation Notes and Tips

Installation of the Dorman 34225 pulley requires basic mechanical skills and common hand tools. The package includes a mounting bracket and detailed instructions to assist with the process. Note that mounting hardware is not included, so retain original fasteners or acquire replacements as needed. Ensure the serpentine belt is properly routed and tensioned after installation to avoid operational issues.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications, providing reliable performance and fitment. The 34225 A/C Compressor Bypass Pulley undergoes quality checks to ensure durability and function. Installation instructions are included to support proper setup. Warranty coverage details can be obtained from the product documentation or manufacturer.

BrandDorman
Part Number34225
Belt TypeSerpentine
Compressor TypeMsc130cvsg2; Msc105cvsg5
Installation Instructions IncludedYes
MaterialAluminum Bracket
MaterialPlastic Pulley
Mounting Bracket IncludedYes
Mounting Hardware IncludedNo
Number of Pulleys Included1
Outside Diameter101
Package ContentsPulley and Bracket

This part fits 9 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2005PontiacMontana3.4LV6N/ARear air conditioning compatible
2004OldsmobileSilhouetteN/A
2004PontiacMontanaN/ARear air conditioning compatible
2003OldsmobileSilhouetteN/A
2003PontiacMontanaN/ARear air conditioning compatible
2002OldsmobileSilhouetteN/ARear air conditioning compatible
2002PontiacMontanaN/ARear air conditioning compatible
2001OldsmobileSilhouetteN/ARear air conditioning compatible
2001PontiacMontanaN/ARear air conditioning compatible

* 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.