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Dayco HD Belt Tensioner - 74 mm x 38 mm Pulley - Volvo 21819687 Gates 38726 89941 DAY89941 DAY89941 - Dayco - FLEETPRO PARTS & TIRES
Dayco HD Belt Tensioner - 74 mm x 38 mm Pulley - Volvo 21819687 Gates 38726 89941 DAY89941 DAY89941 - Dayco - FLEETPRO PARTS & TIRES
Dayco

Dayco HD Belt Tensioner - 74 mm x 38 mm Pulley - Volvo 21819687 Gates 38726 89941 DAY89941

In stock
SKU: DAY89941
$205.27
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Fitment

Fits these trucks

Mack, Volvo and Western Star applicationsBelt drives with a 74 mm x 38 mm tensioner pulley
Always confirm your year, make & model before ordering.
Part numbers

OEM & interchange numbers

6 cross-refs
Dayco 89941 Gates 38726 Volvo 21587366 Volvo 21819687 Volvo 24201573 Mack 21819687
Direct 1-to-1 replacement for every number above. Tap any number to copy.
Overview

Stop belt squeal and slip at the source with this Dayco HD Belt Tensioner distributed by FleetPro Parts & Tires. Dayco is an Original Equipment belt-drive supplier, and this heavy-duty tensioner carries a 74 mm diameter, 38 mm wide pulley for Mack, Volvo and Western Star applications. A weak tensioner lets the belt slip, glaze and eventually come off, taking the accessories it drives down with it. We stock these heavily right here in our Hanover Park, Illinois warehouse to ensure lightning-fast shipping for fleets, diesel repair shops, and owner-operators nationwide.

Steady Belt Tension: The Dayco HD Tensioner Advantage

This Dayco tensioner (Dayco 89941, Part # DAY89941) keeps the belt under tension so it runs true and grips the pulleys it drives. Order by the number on the old tensioner: Volvo 21819687, 21587366 or 24201573, Mack 21819687, Gates 38726 or Dayco 89941. Other HD tensioners share a similar pulley size, so the number is the safer match.

At FleetPro Parts & Tires, we know a belt job is only right when the part is right. This tensioner is a direct replacement for highly searched industry numbers including Volvo 21819687, Mack 21819687, Volvo 21587366 and 24201573, and Gates 38726.

Vehicle Fitment & Compatibility

This OE-supplier tensioner is intended for the following commercial applications:

  • Makes: Mack, Volvo, Western Star
  • Pulley: 74 mm diameter x 38 mm wide
  • Component Group: Engine / Belts & Tensioners

Direct Replacement & Cross-Reference Numbers:

This Dayco tensioner serves as a direct replacement for the following part numbers:

  • Dayco Interchange: 89941
  • Gates Interchange: 38726
  • Volvo Interchange: 21587366, 21819687, 24201573
  • Mack Interchange: 21819687
  • Automann Distributor #: DAY89941

Technical Specifications

  • Component Type: Heavy-Duty Belt Tensioner
  • Pulley Diameter: 74 mm
  • Pulley Width: 38 mm
  • Weight: 3.6 lbs
  • Package Dims: 8.07 x 4.47 x 4.22 in
  • UPC: 036687957702
  • Product Level: OE (Original Equipment)
  • Brand: Dayco (Distributed by FleetPro Parts & Tires)
Key features
  • Dayco OE Supplier: Built by Dayco, an Original Equipment belt-drive supplier.
  • OEM Number Match: Crosses to Volvo 21819687, 21587366 and 24201573 and Mack 21819687, so you can order by the number on the old unit.
  • Steady Belt Tension: Keeps the belt tight so it does not slip, glaze or squeal.
  • Gates and Dayco Interchange: Also crosses to Gates 38726 and Dayco 89941.
  • Three-Make Coverage: Listed for Mack, Volvo and Western Star.
Specifications
Component Type
Heavy-Duty Belt Tensioner
Pulley Diameter
74 mm
Pulley Width
38 mm
Weight
3.6 lbs
Package Dims
8.07 x 4.47 x 4.22 in
UPC
036687957702
Product Level
OE (Original Equipment)
Questions
Will this fit my truck?
This part fits Mack, Volvo and Western Star applications, Belt drives with a 74 mm x 38 mm tensioner pulley. Always confirm your year, make and model before ordering.
What part numbers does it replace?
Yes. It is a direct replacement that interchanges with Dayco 89941, Gates 38726, Volvo 21587366, Volvo 21819687, Volvo 24201573, Mack 21819687.
How fast does it ship?
In-stock orders placed before 12 PM Central on business days ship the same day from our Hanover Park, IL warehouse, and typically arrive in 2 to 5 business days anywhere in the USA.
What's your return policy?
Unused items in original packaging can be returned within 30 days, backed by our 30-day money-back guarantee. If we ship the wrong part, we cover the return label and send the correct one.