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Dayco 89586 Accessory Drive Belt Idler Pulley - Right
| Brand | Dayco 89586 |
|---|---|
| Position | Right |
| 30 | |
| 90.12 | |
| Bearing Inner Diameter 1 | 24.97 |
| Bearing Width | 24 |
| Belt Type | Serpentine |
| Flat | Y |
| Material | Polymer |
| Max Belt Width | 07 Rib |
| Number of Bearings | 2 |
| Fits | BMW · 11 vehicles |
Serpentine belt pulley. Keeps the accessory drive belt running smoothly.
Polymer construction. Lightweight material helps reduce rotating mass.
Dual-bearing design. Provides stable, consistent belt support.
Dayco 89586 Accessory Drive Belt Idler Pulley
Dayco 89586 is an accessory drive belt idler pulley built for serpentine belt systems. It is a polymer pulley with two bearings, a flat running surface, and a maximum belt width of 7 rib, making it a direct-fit service part for select BMW applications.
Key Features
- Accessory drive belt idler pulley for serpentine belt routing
- Polymer pulley construction
- Flat belt surface
- Two-bearing design for smooth belt tracking
- Bearing inner diameter: 24.97 mm
- Bearing width: 24 mm
- Maximum belt width: 7 rib
- Fits right-side applications on select BMW models
Fitment Details
- Fits 2013-2015 BMW X1, right.
- Fits 2011-2013 BMW 135i, right.
- Fits 2013 BMW 135is, right.
- Fits 2011-2012 BMW 335i, right.
- Fits 2011-2012 BMW 335i xDrive, right.
Detailed Description
Dayco 89586 is an accessory drive belt idler pulley for serpentine belt systems used on select BMW X1, BMW 135i, BMW 135is, BMW 335i, and BMW 335i xDrive applications. The polymer pulley and dual-bearing layout are specified to maintain belt alignment and provide a stable running surface for the accessory drive belt. This part number, 89586, is a fitment-specific replacement for right-side service on the listed vehicles.
This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.
Common Uses
- Replacing a worn or noisy idler pulley on a serpentine belt system
- Restoring proper belt routing on BMW accessory drive systems
- Addressing belt squeal caused by pulley wear or bearing roughness
- Correcting belt tracking issues on the right-side pulley position
- Servicing a damaged pulley surface on BMW X1, 135i, 135is, or 335i applications
Installation Notes
Verify the right-side position and confirm the pulley matches the vehicle’s serpentine belt configuration before installation. Inspect the belt, tensioner, and adjacent accessory drive components for wear while servicing the pulley. Confirm bearing dimensions and belt width requirements against the original part to ensure proper fitment.
Quality Assurance
Dayco manufactures accessory drive components for service replacement applications, and this pulley is built to match the listed BMW fitments and dimensional requirements.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2015 | BMW | X1 | 3.0L | L6 | Right | — |
| 2014 | BMW | X1 | 3.0L | L6 | Right | — |
| 2013 | BMW | 135i | — | — | Right | — |
| 2013 | BMW | 135is | — | — | Right | — |
| 2013 | BMW | X1 | 3.0L | L6 | Right | — |
| 2012 | BMW | 135i | — | — | Right | — |
| 2012 | BMW | 335i | — | — | Right | — |
| 2012 | BMW | 335i xDrive | — | — | Right | — |
| 2011 | BMW | 135i | — | — | Right | — |
| 2011 | BMW | 335i | — | — | Right | — |
| 2011 | BMW | 335i xDrive | — | — | Right | — |
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