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DaycoPart #: 89839
Dayco 89839 Accessory Drive Belt Idler Assembly - Upper
⚙️ 18 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$81.26Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship
Most orders ship same-day if ordered before 1pm CST.
✅OE Direct Replacement — Bolt-on fit, no modifications needed
📦Idler Assy. Pulley, Upper
🚗Fitment: Ford, F-250 Super Duty and F-350 Super Duty
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST
Not what you need? Click here for all Accessory Drive Belt Idler Assembly options
Dayco 89839 Accessory Drive Belt Idler Assembly - Upper
| Brand | Dayco |
| Part Number | 89839 |
| Position | Idler Assy. Pulley, Upper |
| Material | Polymer |
| 1068 | 119 |
| Groove Quantity | 8 |
| 256 | 36 |
| Belt Type | Serpentine |
| Bearing Inner Diameter 1 | 17 |
| Bearing Width | 14 |
| Flat | N |
| Max Belt Width | 08 rib |
| Number of Bearings | 1 |
This part fits 18 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2019 | Ford | F-250 Super Duty | 6.7L | V8 | Upper | without A/C; Idler Assy. Pulley |
| 2019 | Ford | F-350 Super Duty | 6.7L | V8 | Upper | without A/C; Idler Assy. Pulley |
| 2018 | Ford | F-250 Super Duty | 6.7L | V8 | Upper | without A/C; Idler Assy. Pulley |
| 2018 | Ford | F-350 Super Duty | 6.7L | V8 | Upper | without A/C; Idler Assy. Pulley |
| 2017 | Ford | F-250 Super Duty | 6.7L | V8 | Upper | without A/C; Idler Assy. Pulley |
| 2017 | Ford | F-350 Super Duty | 6.7L | V8 | Upper | without A/C; Idler Assy. Pulley |
| 2016 | Ford | F-250 Super Duty | 6.7L | V8 | Upper | without A/C; Idler Assy. Pulley |
| 2016 | Ford | F-350 Super Duty | 6.7L | V8 | Upper | without A/C; Idler Assy. Pulley |
| 2015 | Ford | F-250 Super Duty | 6.7L | V8 | Upper | without A/C; Idler Assy. Pulley |
| 2015 | Ford | F-350 Super Duty | 6.7L | V8 | Upper | without A/C; Idler Assy. Pulley |
| 2014 | Ford | F-250 Super Duty | 6.7L | V8 | Upper | without A/C; Idler Assy. Pulley |
| 2014 | Ford | F-350 Super Duty | 6.7L | V8 | Upper | without A/C; Idler Assy. Pulley |
| 2013 | Ford | F-250 Super Duty | 6.7L | V8 | Upper | without A/C; Idler Assy. Pulley |
| 2013 | Ford | F-350 Super Duty | 6.7L | V8 | Upper | without A/C; Idler Assy. Pulley |
| 2012 | Ford | F-250 Super Duty | 6.7L | V8 | Upper | without A/C; Idler Assy. Pulley |
| 2012 | Ford | F-350 Super Duty | 6.7L | V8 | Upper | without A/C; Idler Assy. Pulley |
| 2011 | Ford | F-250 Super Duty | 6.7L | V8 | Upper | without A/C; Idler Assy. Pulley |
| 2011 | Ford | F-350 Super Duty | 6.7L | V8 | Upper | without A/C; Idler Assy. Pulley |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.