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Dayco 89521 Accessory Drive Belt Idler Pulley - Air Conditioning Bypass
| Brand | Dayco 89521 |
|---|---|
| Position | Air Conditioning Bypass |
| 27 | |
| 114 | |
| Bearing Inner Diameter 1 | 17 |
| Bearing Width | 12 |
| Belt Type | Serpentine |
| Groove Quantity | 6 |
| Material | Steel |
| Max Belt Width | 06 Rib |
| Number of Bearings | 1 |
| Fits | Ford · 6 vehicles |
Steel construction. Provides a durable pulley body for accessory drive use.
6-groove design. Matches a serpentine belt for smooth belt tracking.
Single-bearing assembly. Simplifies the pulley design with one bearing.
Cross-references Duralast 231521, Ford F8KE-8A617-AB and Ford F8KZ-8678-AB for the same application. See all 4.
Dayco 89521 Accessory Drive Belt Idler Pulley
Dayco 89521 is an accessory drive belt idler pulley built for serpentine belt systems. It uses a steel construction with a single bearing and 6-groove profile to support proper belt routing on the accessory drive system.
Compatible with 1998-2003 Ford Escort air conditioning bypass applications, this pulley is a direct-fit service part for the Ford Escort accessory drive belt path. The Dayco 89521 part number is also referenced in OE and aftermarket interchange listings for the same application.
Key Features
- Steel pulley construction for accessory drive service
- 6-groove design for serpentine belt routing
- Single-bearing pulley assembly
- Fits 06 rib serpentine belt applications
- Accessory drive belt idler pulley for Ford Escort A/C bypass use
- Cross-reference part numbers include Ford F8KE-8A617-AB and Motorcraft YS234
Detailed Description
The Dayco 89521 accessory drive belt idler pulley is engineered for serpentine belt systems that require stable belt tracking and consistent pulley alignment. Its steel body and single-bearing design support the accessory drive path, while the 6-groove profile matches 06 rib belt configurations. This part is listed for 1998-2003 Ford Escort air conditioning bypass applications, making it a relevant replacement when servicing the belt routing on those vehicles. If you are searching for a Ford Escort accessory drive belt idler pulley or Dayco 89521 replacement, this part number aligns with the specified fitment and interchange references.
What It Helps Address
- Worn or noisy idler pulley operation
- Belt tracking issues in a serpentine drive system
- Accessory drive belt routing service on a Ford Escort
- Air conditioning bypass belt path replacement needs
- Pulley wear related to bearing fatigue
Installation Notes and Tips
Verify belt width, groove count, and pulley alignment before installation. Confirm the vehicle is a 1998-2003 Ford Escort with an air conditioning bypass application and compare the existing pulley dimensions to the Dayco 89521 specifications. Inspect the serpentine belt, tensioner, and adjacent accessory drive components during service to help ensure proper belt tracking after replacement.
Quality Assurance
Dayco is a recognized name in accessory drive components, and this pulley is built with steel construction and a single bearing for service in serpentine belt systems. Confirm fitment against the vehicle application and interchange references before installation.
| Year | Make | Model | Submodel | Position | Notes |
|---|---|---|---|---|---|
| 2003 | Ford | Escort | — | Air Conditioning Bypass | — |
| 2002 | Ford | Escort | — | Air Conditioning Bypass | — |
| 2001 | Ford | Escort | — | Air Conditioning Bypass | — |
| 2000 | Ford | Escort | — | Air Conditioning Bypass | — |
| 1999 | Ford | Escort | ZX2 S/R | Air Conditioning Bypass | — |
| 1998 | Ford | Escort | — | Air Conditioning Bypass | — |
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