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Dayco 89574 Accessory Drive Belt Idler Pulley
| Brand | Dayco 89574 |
|---|---|
| Material | Polymer |
| 1068 | 62 |
| Groove Quantity | 6 |
| 256 | 25.7 |
| Belt Type | Serpentine |
| Bearing Inner Diameter 1 | 17 |
| Bearing Width | 12 |
| Flat | N |
| Max Belt Width | 06 rib |
| Number of Bearings | 1 |
| Fits | Mercedes-Benz · 8 vehicles |
Serpentine belt pulley. Keeps the accessory drive belt tracking smoothly.
Polymer construction. Lightweight material helps reduce rotating mass.
6-groove design. Matches a six-rib serpentine belt.
Accessory Drive Belt Idler Pulley for Mercedes-Benz
Dayco 89574 is an accessory drive belt idler pulley built for serpentine belt systems. It uses a polymer pulley body with a grooved 6-rib profile and a single bearing to support smooth belt routing in the accessory drive system.
Key Features
- Accessory drive belt idler pulley for serpentine belt applications
- Polymer pulley construction
- 6-groove design for 6-rib belt routing
- Single bearing design with 17 mm inner diameter and 12 mm bearing width
- Maximum belt width: 06 rib
- Grooved pulley profile for accessory drive belt system use
Detailed Description
Dayco 89574 is a grooved accessory drive belt idler pulley engineered for vehicles using a serpentine belt layout. The polymer pulley body and precision bearing dimensions are specified to match the accessory drive belt system requirements on select Mercedes-Benz applications. This part number, 89574, is listed for 2012-2015 Mercedes-Benz C250 and 2012-2015 Mercedes-Benz SLK250 models with grooved accessory drive belt idler pulley fitment. For buyers searching for a Mercedes-Benz C250 idler pulley or a Mercedes-Benz SLK250 serpentine belt pulley, Dayco 89574 provides a direct replacement option within the confirmed vehicle range.
This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.
What It Is Used For
- Replacing a worn or noisy accessory drive belt idler pulley
- Restoring proper serpentine belt tracking
- Addressing belt squeal caused by pulley bearing wear
- Correcting belt routing issues in the accessory drive system
- Supporting stable belt operation on Mercedes-Benz C250 and SLK250 applications
Installation Notes and Tips
Verify pulley groove count, belt width, and bearing dimensions before installation. Confirm the vehicle is a 2012-2015 Mercedes-Benz C250 or 2012-2015 Mercedes-Benz SLK250 with grooved accessory drive belt idler pulley fitment. Inspect the serpentine belt, tensioner, and adjacent pulleys for wear during service, and replace any damaged components as needed to maintain proper belt alignment.
Quality Assurance
Dayco manufactures belt drive components for automotive accessory drive systems, and part 89574 is built to the listed material and dimensional specifications for the confirmed Mercedes-Benz applications.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2015 | Mercedes-Benz | C250 | 1.8L | L4 | N/A | Grooved - Compatible with Accessory Drive Belt Idler Pulley. |
| 2015 | Mercedes-Benz | SLK250 | — | — | N/A | Grooved - Compatible with Accessory Drive Belt Idler Pulley. |
| 2014 | Mercedes-Benz | C250 | 1.8L | L4 | N/A | Grooved - Compatible with Accessory Drive Belt Idler Pulley. |
| 2014 | Mercedes-Benz | SLK250 | — | — | N/A | Grooved - Compatible with Accessory Drive Belt Idler Pulley. |
| 2013 | Mercedes-Benz | C250 | 1.8L | L4 | N/A | Grooved - Compatible with Accessory Drive Belt Idler Pulley. |
| 2013 | Mercedes-Benz | SLK250 | — | — | N/A | Grooved - Compatible with Accessory Drive Belt Idler Pulley. |
| 2012 | Mercedes-Benz | C250 | 1.8L | L4 | N/A | Grooved - Compatible with Accessory Drive Belt Idler Pulley. |
| 2012 | Mercedes-Benz | SLK250 | — | — | N/A | Grooved - Compatible with Accessory Drive Belt Idler Pulley. |
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