Dorman 34230 A/C Compressor Bypass Pulley

Brand Dorman 34230
Belt Type Serpentine
Compressor Type Ltr4
Installation Instructions Included Yes
Material Aluminum Bracket
Material Plastic Pulley
Mounting Bracket Included Yes
Mounting Hardware Included No
Number of Pulleys Included 1
Outside Diameter 139
Package Contents Pulley and Bracket
Fits Chevrolet and Toyota · 10 vehicles

Bypass pulley solution. Lets the original drive belt stay in use when the compressor is inoperable.

Aluminum bracket. Plastic pulley construction balances strength with smooth belt routing.

Bracket included. Comes with the pulley and bracket for a complete replacement.

Cross-references Four Seasons 2464NK, Four Seasons 77320 and Four Seasons 78320 for the same application. See all 9.

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A/C Bypass Pulley for OE Belt Routing

The Dorman 34230 A/C compressor bypass pulley lets the original serpentine belt stay in place while routing around an inoperable compressor. It is a practical repair for 1998-2002 Chevrolet Prizm and 1998-2002 Toyota Corolla models when the A/C compressor is no longer turning properly.

  • Aluminum bracket with a plastic pulley
  • Designed for serpentine belt systems
  • Outside diameter: 139 mm
  • Mounting bracket included
  • Installation instructions included
  • Package contents: pulley and bracket
  • Compressor type: Ltr4

Product Details

This Dorman 34230 bypass pulley is used to maintain accessory drive operation after an A/C compressor failure without changing the OE drive belt layout. It provides a direct solution for drivers needing a 1998-2002 Toyota Corolla A/C compressor bypass pulley or a 1998-2002 Chevrolet Prizm serpentine belt bypass setup. This part cross-references Four Seasons 2464NK for the same application.

Common Repair Uses

  • Eliminates belt routing issues caused by a seized A/C compressor
  • Restores accessory drive function when the compressor pulley no longer spins freely
  • Helps maintain serpentine belt operation after compressor removal or bypass
  • Addresses noise or drag from a failed compressor assembly

Installation Notes

Install using the included bracket and follow the provided instructions. Verify belt alignment, pulley clearance, and compressor type before installation. Mounting hardware is not listed as included, so confirm whether existing fasteners can be reused for your application.

Quality Assurance

Dorman supplies this bypass pulley as a cost-effective repair part for OE-style belt routing on supported applications. Confirm fitment by year, make, model, and compressor type before ordering.

This part fits 10 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2002ChevroletPrizmN/A
2002ToyotaCorollaN/A
2001ChevroletPrizmN/A
2001ToyotaCorollaN/A
2000ChevroletPrizmN/A
2000ToyotaCorollaN/A
1999ChevroletPrizmN/A
1999ToyotaCorollaN/A
1998ChevroletPrizmN/A
1998ToyotaCorollaN/A
Directly replaces or cross-references 9 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Four Seasons — 2464NKFour Seasons — 77320Four Seasons — 78320Four Seasons — TSR2324UAC — CO10410GLCUAC — KT5140UAC — KT5140ASK34230TSN2324