Gates 38726 belt tensioner for the 2018-2022 Volvo VNR 6-cylinder 12.8L, the 2019 VNR 6-cylinder 10.8L and other vehicles applies spring tension to the accessory drive belt. Also called a serpentine belt tensioner, it has a patented design for belt alignment and tension, which helps drive efficiency and life.
- FleetRunner heavy-duty automatic belt tensioner line
- Patented labyrinth seal that keeps contamination away from internal parts
- Steel pulley with dust shields to protect the internal bearings
- Double row bearing designed to carry more load
- Chrome-silicone round torsion spring designed for low flex-fatigue
- Patented damping mechanism for stability and lower vibration
Quick facts
- Part: Gates 38726 belt tensioner
- Also called: serpentine belt tensioner
- Fits: the 2018-2022 Volvo VNR 6-cylinder 12.8L, the 2019 VNR 6-cylinder 10.8L and other vehicles
- Position: alternator and air conditioning, alternator, fan, fan and water pump
- Material: Steel
- Condition: New
A squealing or chirping belt, a belt that looks glazed or frayed, or a growl from the tensioner pulley can mean the tensioner is worn. Those signs can also come from a worn drive belt, a failing idler pulley or a rough alternator or water pump bearing, so pin down which one it is before you order.
Fits
This tensioner is listed for a wide range of Volvo and Mack models, including the 2015-2017 Volvo VNL 6-cylinder 10.8L, the 2018-2022 VNL 6-cylinder 12.8L, the 2018-2019 Mack Granite 6-cylinder 10.8L and the 2018-2021 Granite 6-cylinder 12.8L. If your model isn't named here, look up your year and engine in the "Vehicles it fits" section.
Specifications
Fit and size
- Position: alternator and air conditioning, alternator, fan, fan and water pump
- Quantity per vehicle: 1
- Pulley outside diameter: 75 mm (2.95 in)
- Pulley width: 40 mm (1.57 in)
- Bearing bore inside diameter: 30 mm (1.18 in)
- Mounting holes: 1
Build and materials
- Material: Steel
- Pulley count: 1
- Contact surface: smooth/backside
- Belt type: V-ribbed
- Condition: New
- Country of origin: Canada
In the box
This listing holds one tensioner assembly with its bolt, and each vehicle takes one.
Interchange: 89941 · 49608 · 910589A · 21819687 · 910589
This part cross-references / interchanges with the following part numbers:
38726, 89941, 49608, 910589A, 21819687, 910589
Frequently Asked Questions
Is this Volvo VNL belt tensioner right for a 2018-2022 VNL 6-cylinder 12.8L?
Yes. Gates 38726 is listed for the 2018-2022 Volvo VNL 6-cylinder 12.8L and the 2015-2017 VNL 6-cylinder 10.8L. For other years or engines, use the "Vehicles it fits" section.
Does this Gates drive belt tensioner come with its bolt?
Yes. Gates 38726 comes as a tensioner assembly with one bolt.
What size is the pulley on this belt tensioner?
The steel pulley is 75 mm (2.95 in) in outside diameter and 40 mm (1.57 in) wide, with a 30 mm (1.18 in) bearing bore.
Can a growl from the pulley mean the belt tensioner is worn?
Yes, it can. A growl or grinding from the tensioner pulley is one sign, along with a chirping belt or a glazed, frayed belt. A shop can check the bearing and belt tension.
What keeps dirt out of the bearings in the Gates 38726?
A patented labyrinth seal keeps contamination from reaching the internal parts, and the steel pulley has dust shields that protect the internal bearings.
