Dorman 34178 | A/C Compressor Bypass Pulley

Part Number
Air Conditioning Bypass Pulley

Fits: 93-98 Jeep Grand Cherokee, 94-01 Dodge Dakota, 94-02 Dodge Ram 1500, 94-02 Dodge Ram 2500, 94-02 Dodge Ram 3500, 98-01 Dodge Durango

Special Price $59.49 Regular Price $69.99
In stock
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Estimated Ship Date: 1 Business Day or Less

This A/C compressor bypass pulley is a cost-effective solution to allow the original equipment drive belt to be used while bypassing an inoperable A/C compressor.

BRAND: Dorman - HELP


  • Quality tested - this part has undergone extensive testing to ensure a quality fit and long service life
  • Dodge 2002-94, Jeep 1998-93
  • Air Conditioning Bypass Pulley
  • Cost-effective solution - this bypass pulley retains the use of the standard drive belt after a failed A/C compressor is removed
  • Easy to install - uses the same mounting points as the A/C compressor
  • A/C, Compressor, By-Pass, Pulley, Air Conditioner, Air Conditioning
  • Durable components - this bypass pulley uses quality components for a long service life


Belt TypeSerpentine
Compressor TypeLtr4
Installation Instructions IncludedYes
Material Aluminum Bracket
MaterialPlastic Pulley
Mounting Bracket IncludedYes
Mounting Hardware IncludedYes
Number of Pulleys Included1
Outside Diameter130
Package ContentsPulley and Bracket

w/7 Rib Serpentine Belt



  • 1994-2001 Dodge Dakota - Position: N/A
  • 1994-2002 Dodge Ram 2500 - Position: N/A
  • 1994-2002 Dodge Ram 1500 - Position: N/A
  • 1998-2001 Dodge Durango - Position: N/A
  • 1994-2002 Dodge Ram 3500 - Position: N/A
  • 1993-1998 Jeep Grand Cherokee - Position: N/A
Customer Questions
Can I use Dorman parts to replace OEM parts?
Yes, Dorman parts can often be used as replacements for OEM parts, but it is important to carefully compare specifications and ensure compatibility.
How do I install Dorman shift linkage bushing?
To install a Dorman shift linkage bushing, first locate the old bushing and remove it if necessary. Apply lubricant to the Dorman bushing and slide it onto the shift linkage, tapping it into place with a soft tool until fully seated. Check the alignment and function of the shift linkage after installation.
Where is Dorman manufactured?
Dorman is a global automotive parts supplier with manufacturing facilities in the United States, Mexico, Canada, China, and India. Its headquarters and largest manufacturing facility are located in Colmar, Pennsylvania, USA.
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