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Vaico V20-3407 Accessory Drive Belt Idler Pulley - Left or Right
| Brand | Vaico V20-3407 |
|---|---|
| Position | Left and Right |
| Diameter [mm] | 79,5 |
| Height [mm] | 34.5 |
| Length [mm] | 79.5 |
| Packaging height [cm] | 9 |
| Packaging width [cm] | 8,3 |
| Weight [kg] | 0.195 |
| Width [mm] | 79.5 |
| Product line | VAICO |
| Fits | BMW · 7 vehicles |
Accessory drive belt idler pulley. Keeps the belt routed and tensioned in the drive system.
Compact 79.5 mm size. Fits neatly within the accessory drive belt assembly.
Cross-references 4 601 379, 7 559 892 and 7 627 053 for the same application. See all 6.
Accessory Drive Belt Idler Pulley for BMW
The VAICO V20-3407 accessory drive belt idler pulley is built for vehicles that rely on a smooth-running ribbed V-belt system. With a 79.5 mm diameter and 34.5 mm height, it is sized for direct replacement use in the accessory drive belt path on select BMW applications.
Compatible With 2011-2012 BMW 740i, right; 2011-2012 BMW 740Li, right; and 2008-2010 BMW X6, left. The VAICO line focuses on OE-style replacement parts for European vehicles, and this pulley follows that approach with application-specific fitment and dimensions.
Key Features
- Accessory drive belt idler pulley for ribbed V-belt systems
- 79.5 mm diameter and 79.5 mm width for application-specific sizing
- 34.5 mm overall height
- Lightweight design at 0.195 kg
- Fits select BMW 740i, BMW 740Li, and BMW X6 applications
- VAICO V20-3407 replacement part number for catalog matching
Detailed Description
The VAICO V20-3407 is an accessory drive belt idler pulley used to guide the serpentine or ribbed belt through the accessory drive system. Proper pulley geometry helps maintain belt tracking and consistent belt routing across the front-end accessory drive. This part is listed for 2011-2012 BMW 740i, right; 2011-2012 BMW 740Li, right; and 2008-2010 BMW X6, left, making it a targeted replacement for specific BMW belt-drive layouts. Cross-reference part numbers include 4 601 379 and 7 559 892 for the same application.
Common Issues This Part May Address
- Noise from a worn or rough idler pulley bearing
- Belt misalignment in the accessory drive belt system
- Visible pulley wear, wobble, or surface damage
- Irregular belt tracking on BMW ribbed V-belt setups
- Replacement needs during accessory drive belt service
Installation Notes and Tips
Verify pulley position before ordering, since this application includes right-side and left-side fitments depending on model. Confirm belt routing, pulley diameter, and mounting location against the original part before installation. The V20-3407 should be matched to the vehicle’s accessory drive layout on the specific BMW 740i, BMW 740Li, or BMW X6 application listed above.
Quality Assurance
VAICO supplies OE-style replacement components for European vehicle applications. Part number V20-3407 is cataloged for direct fitment matching on the listed BMW models and positions, with dimensions provided to support accurate replacement selection.
| Year | Make | Model | Submodel | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2012 | BMW | 740i | Base | 3.0L | L6 | Right | Aftermarket ribbed V-Belt for Accessory Drive Belt Idler Pulley; VAICO |
| 2012 | BMW | 740Li | Base | — | — | Right | Aftermarket ribbed V-Belt for Accessory Drive Belt Idler Pulley; VAICO |
| 2011 | BMW | 740i | Base | 3.0L | L6 | Right | Aftermarket ribbed V-Belt for Accessory Drive Belt Idler Pulley; VAICO |
| 2011 | BMW | 740Li | Base | — | — | Right | Aftermarket ribbed V-Belt for Accessory Drive Belt Idler Pulley; VAICO |
| 2010 | BMW | X6 | xDrive35i | — | — | Left | Grade: Aftermarket; Description: Ribbed V-Belt; Grooved; VAICO |
| 2009 | BMW | X6 | xDrive35i | — | — | Left | Grade: Aftermarket; Description: Ribbed V-Belt; Grooved; VAICO |
| 2008 | BMW | X6 | — | 3.0L | L6 | Left | Grade: Aftermarket; Description: Ribbed V-Belt; Grooved; VAICO |
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