Dayco 89380 belt tensioner for the 2018-2026 Lexus LC500 and other vehicles holds the accessory drive belt under working tension. Some shoppers call it a serpentine belt tensioner, and this Dayco belt tensioner takes up slack in the belt as it runs.
- Automatic tensioner type
- Clockwise direction
- Single flat pulley, 70 mm in diameter
- Pulley width of 26 mm
- Built for a serpentine belt
Quick facts
- Part: Dayco 89380 belt tensioner
- Also called: serpentine belt tensioner
- Fits: 2018-2026 Lexus LC500 and other vehicles
- Condition: New
Belt squeal or chirp, a belt that slips or wears unevenly, or a tensioner pulley that wobbles can mean the tensioner is wearing out. Before you replace it, rule out a worn belt or a noisy accessory pulley bearing, since either can produce the same signs.
Fits
This belt tensioner is a direct-fit replacement for the 2018-2026 Lexus LC500, the 2015-2025 Lexus RC F and the 2022-2025 Lexus IS500, among many Lexus models. If yours is another Lexus, find its year and model in the "Vehicles it fits" section.
Specifications
Fit and size
- Quantity per vehicle: 1
- Number of pulleys: 1
- Pulley diameter: 70 mm
- Pulley width: 26 mm
Build and materials
- Type: automatic
- Direction: clockwise
- Belt type: serpentine
- Pulley: flat
- Condition: new
In the box
One belt tensioner. This listing is a single tensioner, and the fitment calls for one per vehicle.
Interchange: 305380
This part cross-references / interchanges with the following part numbers:
NA, 305380, 16620-0W130, 16620-0W131
Frequently Asked Questions
Will this Dayco tensioner fit the 2015-2025 Lexus RC F?
Yes. Dayco 89380 belt tensioner is listed for the 2015-2025 Lexus RC F, and the fitment calls for one tensioner on that car.
Does the Dayco automatic belt tensioner fit the 2022-2025 Lexus IS500?
Yes, Dayco 89380 is listed for the 2022-2025 Lexus IS500. For another Lexus, find its year and model in the "Vehicles it fits" section.
What size is the pulley on this Dayco belt tensioner assembly?
The single flat pulley on this tensioner is 70 mm in diameter and 26 mm wide. Its direction is clockwise, and it is built for a serpentine belt.
What can a worn belt tensioner sound or look like?
Belt squeal, a slipping or unevenly worn belt, or a wobbling tensioner pulley can point to a worn tensioner. Look only with the engine off and cool; a shop can test it.
Which other number does the Dayco 89380 belt tensioner replace?
Dayco 89380 interchanges with 305380. That number is printed on the Interchange line of this page.
