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Dayco 89464 Accessory Drive Belt Tensioner Assembly
| Brand | Dayco 89464 |
|---|---|
| Position | Fan, Alternator and Air Conditioning, Fan and Air Conditioning, Alternator, and Alternator and Air Conditioning |
| Belt Type | Serpentine |
| Direction | Clock wise |
| Number of Pulleys | 1 |
| Pulley 1 Diameter | 78 |
| Pulley 1 Flat | N |
| Pulley 1 Number of Grooves | 6 |
| Pulley 1 Width | 30 |
| Type | Automatic |
| Fits | — |
Automatic tensioner assembly. Maintains proper serpentine belt tension for consistent drive performance.
Single-pulley design. Uses one pulley for a straightforward, compact belt drive setup.
6-groove pulley. Provides secure engagement with a serpentine belt.
Cross-references ACDelco 38599, CARQUEST 38599 and Duralast 89464 for the same application. See all 8.
Accessory Drive Belt Tensioner Assembly
Dayco 89464 is an automatic serpentine accessory drive belt tensioner assembly built for consistent belt control in the accessory drive system. It uses a single 6-groove pulley with a 78 mm diameter and clockwise rotation to maintain proper serpentine belt tension and pulley tracking.
Compatible With select vehicle applications that use a clockwise, automatic serpentine tensioner setup, including Ford F-150 and Chevrolet Silverado fitment searches where Dayco 89464 is the required replacement part number.
Key Features
- Automatic accessory drive belt tensioner assembly for serpentine belt systems
- Clockwise rotation design
- Single pulley configuration
- 78 mm pulley diameter with 30 mm width
- 6-groove pulley profile for serpentine belt engagement
- Dayco 89464 replacement part number for catalog and cross-reference lookup
Detailed Description
This Dayco belt tensioner assembly is engineered for accessory drive systems that rely on automatic belt tension control. The 6-groove serpentine pulley helps maintain belt alignment across the drive path, while the clockwise direction specification is important for matching the original tensioner orientation on the vehicle. When searching for Dayco 89464, buyers often compare it against OE-style replacements for Ford F-150 and Chevrolet Silverado applications where correct pulley size and rotation are critical.
This part cross-references ACDelco 38599 for the same application.
What It Helps Fix
- Serpentine belt slack or inconsistent tension
- Belt squeal caused by weak or worn tensioner operation
- Improper belt tracking across accessory pulleys
- Noise from a worn tensioner pulley bearing
- Accessory drive belt vibration during engine operation
Installation Notes and Tips
Verify pulley diameter, groove count, and clockwise rotation before installation. Compare the original tensioner assembly to Dayco 89464 to confirm the pulley width and mounting style match the vehicle’s accessory drive layout. Inspect the serpentine belt, idler pulleys, and related drive components at the same time to avoid repeat service.
Quality Assurance
Dayco is a recognized name in belt drive components, and this tensioner assembly is built to meet the dimensional and functional requirements of the accessory drive system. Confirm vehicle-specific fitment by matching the original part number, pulley specifications, and application details before ordering.
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