Dorman 34189 A/C compressor by-pass pulley for the 2002-2003 Ford F-150 and other vehicles keeps the original drive belt in service after an inoperable A/C compressor is removed. It is made for vehicles whose compressor has failed and come off.
- Keeps the standard drive belt in use once a failed A/C compressor is out
- Plastic pulley on an aluminum bracket
- Serpentine pulley with a 114 mm outside diameter
- Extensive testing for quality and long service life
Quick facts
- Part: Dorman 34189 A/C compressor by-pass pulley
- Fits: 2002-2003 Ford F-150 and other vehicles
- Material: aluminum bracket, plastic pulley
- Condition: New
A noisy compressor, a seized clutch or weak cooling can point to a failed compressor, though other causes are possible. With the engine off, look over the belt and compressor for cracks, leaks or damage before replacing anything. If the compressor is the cause, this pulley lets the belt keep running without it.
Fits
With the compressor removed, this by-pass pulley fits the 2002-2003 Ford F-150, the 1997-2001 Ford Expedition and the 2002-2003 Ford Lobo, among others. The 1997-2001 Ford Expedition takes one pulley; open the "Vehicles it fits" section to check your exact model and engine.
Specifications
Fit and size
- Outside diameter: 114 mm
- Quantity per vehicle: 1
- Pulley type: serpentine
- Compressor type: FS10
Build and materials
- Material: aluminum bracket, plastic pulley
- Condition: New
- Country of origin: China
In the box
One pulley, one bracket and installation hardware.
Installation notes
- Installation instructions are included for the steps.
- The pulley uses the same mounting points as the A/C compressor.
Interchange: SK34189
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Does the Dorman 34189 A/C compressor by-pass pulley fit the 2002-2003 Ford F-150?
Yes, Dorman 34189 is listed for the 2002-2003 Ford F-150. Open the "Vehicles it fits" section to check other models and engines.
Does this by-pass pulley come with a bracket and hardware?
Yes. Dorman 34189 includes the pulley, a bracket and installation hardware, and installation instructions are included too.
Is this a serpentine belt pulley, and what size is it?
Yes. This by-pass pulley is a serpentine type with a 114 mm outside diameter, listed for compressor type FS10.
Can a failed A/C compressor be bypassed with this pulley?
Yes. Once an inoperable compressor is removed, this pulley lets the original drive belt stay in use. A shop can confirm the compressor is the cause.
Does the by-pass pulley mount where the compressor was?
Yes. This by-pass pulley uses the same mounting points as the A/C compressor, and the included instructions cover the steps.
