Dayco 89109 accessory drive belt tensioner pulley for the 2010-2018 Peterbilt 365 6-cylinder 8.9L, the 2011-2018 365 11.9L and other vehicles turns with the accessory drive belt as it runs over the pulley face. The pulley sits in the belt path and helps keep the belt on its route under tension.
- Flat pulley face for a serpentine belt
- Takes belts up to 10 ribs wide
- Two bearings carry the pulley's rotation
Quick facts
- Part: Dayco 89109 accessory drive belt tensioner pulley
- Fits: 2010-2018 Peterbilt 365 6-cylinder 8.9L, the 2011-2018 365 11.9L and other vehicles
- Condition: New
A worn pulley can show up as a squeal or chirp from the belt area, a rough or wobbly pulley, or uneven belt wear. With the engine off and cool, look at the pulley face and the belt for scuffing or misalignment. Belt noise can also come from the belt itself or another driven accessory, so find the cause before replacing this pulley.
Fits
The 2010-2018 Peterbilt 365 6-cylinder 8.9L, the 2011-2018 365 11.9L, the 2014-2017 Volvo VNL 11.9L and the 2004-2009 Kenworth T800 12.5L all take this pulley, and it fits many other vehicles as well.
Specifications
Fit and size
- Quantity per vehicle: 1
- Max belt width: 10 rib
- Bearing inner diameter: 17 mm (both bearings)
- Bearing width: 28 mm
Build and materials
- Belt type: serpentine
- Pulley face: flat
- Number of bearings: 2
- Condition: New
In the box
One accessory drive belt tensioner pulley. The fitment lists one pulley per vehicle, so one listing covers one vehicle.
Interchange: 580021 · 580124 · 36164 · 36269 · 49168 · 49170 · 45109 · 900276A · 900454A · 900276 · 900454
This part cross-references / interchanges with the following part numbers:
580021, 580124, 36164, 36269, 49168, 49170, 45109, 900276A, 900454A, 900276, 900454, 200-2279, 207-8118, 211-7895, 285-0273, 334-3353, 347-7963, 2871294, 3106237, 4920105, 23535149, 1841930C1, RE503897
Frequently Asked Questions
Is this Dayco drive belt tensioner pulley right for the 2014-2017 Volvo VNL 11.9L?
Yes. Dayco 89109 is listed for the 2014-2017 Volvo VNL 11.9L, one pulley per truck. If your truck is not named here, look up its year, model and engine in the "Vehicles it fits" section.
What belt width does this accessory drive belt tensioner pulley take?
This pulley has a flat face and takes a belt up to 10 ribs wide, as the Max Belt Width spec shows.
How many bearings does the Dayco 89109 tensioner pulley have?
Dayco 89109 has two bearings. Each has a 17 mm inner diameter, and the bearing width is 28 mm.
Is 900276A a cross-reference number for the Dayco 89109 tensioner pulley?
Yes. 900276A is on the interchange list for Dayco 89109, along with 580021, 36164 and the other numbers printed on the Interchange line.
With the engine off, what can I look for on a worn tensioner pulley?
Look for scuffing on the pulley face, a rough or loose feel when you turn it by hand, or a belt riding off-center. A squeal from the belt area while driving can also be a sign.
