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Dayco 89285 Accessory Drive Belt Tensioner Assembly - Main Drive
| Brand | Dayco 89285 |
|---|---|
| Position | Main Drive |
| Belt Type | Serpentine |
| Direction | Counter Clock Wise |
| Number of Pulleys | 1 |
| Pulley 1 Diameter | 76 |
| Pulley 1 Flat | Y |
| Pulley 1 Width | 21 |
| Type | Automatic |
| Fits | Volkswagen and Audi · 18 vehicles |
Automatic tensioner assembly. Maintains proper serpentine belt tension for consistent drive performance.
Single-pulley design. Simplifies the accessory drive belt system with one pulley.
Serpentine belt compatible. Built for smooth, reliable belt routing in the drive system.
Cross-references ACDelco 38151, CARQUEST 38151 and Duralast 305285 for the same application. See all 8.
Accessory Drive Belt Tensioner for Audi and Volkswagen
Restore proper serpentine belt tension with this Dayco accessory drive belt tensioner assembly, Part Number 89285. It is built as an automatic tensioner with a counter clockwise direction and a single 76 mm pulley to help maintain consistent belt tracking in the accessory drive system.
Key Features
- Dayco accessory drive belt tensioner assembly
- Part Number: 89285
- Serpentine belt type
- Automatic tensioner design
- Counter clockwise rotation
- Single pulley design
- 76 mm pulley diameter
- 21 mm pulley width
- Flat pulley surface: yes
Fitment Details
- Fits 1997-2001 Audi A4, N/A
- Fits 1997-2001 Audi A4 Quattro, N/A
- Fits 1998 Volkswagen Passat, N/A
- Fits 1999 Volkswagen Passat, Main Drive
- Fits 2000-2005 Volkswagen Passat, N/A
What This Part Helps Address
- Belt squeal caused by weak or inconsistent tension
- Serpentine belt tracking issues
- Accessory drive belt slippage
- Uneven belt wear from a worn tensioner pulley
- Loss of proper belt tension in the accessory drive system
Installation Notes and Tips
Verify belt routing, pulley alignment, and rotation direction before installation. This tensioner is specified for serpentine belt applications and should be matched to the vehicle’s accessory drive layout. Confirm fitment for your Audi A4, Audi A4 Quattro, or Volkswagen Passat by year and position before ordering.
Quality Assurance
Dayco is a recognized name in accessory drive components, and this tensioner is built to meet the fitment and dimensional requirements listed for the confirmed applications. This part cross-references ACDelco (e.g., 38151) for the same application.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2005 | Volkswagen | Passat | 1.8L | L4 | N/A | — |
| 2004 | Volkswagen | Passat | 1.8L | L4 | N/A | — |
| 2003 | Volkswagen | Passat | 1.8L | L4 | N/A | — |
| 2002 | Volkswagen | Passat | 1.8L | L4 | N/A | — |
| 2001 | Audi | A4 | 1.8L | L4 | N/A | — |
| 2001 | Audi | A4 Quattro | 1.8L | L4 | N/A | — |
| 2001 | Volkswagen | Passat | 1.8L | L4 | N/A | — |
| 2000 | Audi | A4 | 1.8L | L4 | N/A | — |
| 2000 | Audi | A4 Quattro | 1.8L | L4 | N/A | — |
| 2000 | Volkswagen | Passat | 1.8L | L4 | N/A | — |
| 1999 | Audi | A4 | 1.8L | L4 | N/A | — |
| 1999 | Audi | A4 Quattro | 1.8L | L4 | N/A | — |
| 1999 | Volkswagen | Passat | 1.8L | L4 | Main Drive | — |
| 1998 | Audi | A4 | 1.8L | L4 | N/A | — |
| 1998 | Audi | A4 Quattro | 1.8L | L4 | N/A | — |
| 1998 | Volkswagen | Passat | 1.8L | L4 | N/A | — |
| 1997 | Audi | A4 | 1.8L | L4 | N/A | — |
| 1997 | Audi | A4 Quattro | 1.8L | L4 | N/A | — |
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