Dayco 89481 Accessory Drive Belt Tensioner Assembly
OE Quality 60-Day Returns
Dayco

Dayco 89481 Accessory Drive Belt Tensioner Assembly

Brand Dayco 89481
Position Fan and Alternator, Alternator, Fan, Air Conditioning, Water Pump, Alternator and Air Conditioning, Main Drive, Alternator and Water Pump, Water Pump, Fan, Alternator and Air Conditioning, and Accessory Drive
Belt Type Serpentine
Direction Clock wise
Number of Pulleys 1
Pulley 1 Diameter 74
Pulley 1 Flat N
Pulley 1 Number of Grooves 8
Pulley 1 Width 33.75
Type Automatic
Fits —

Automatic tensioner assembly. Maintains proper serpentine belt tension for consistent drive performance.

Single-pulley design. Uses one pulley with 8 grooves for a straightforward belt path.

Cross-references ACDelco 38516, ACDelco 38525 and CARQUEST 38516 for the same application. See all 40.

$110.95Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.

Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $110.95
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Accessory Drive Belt Tensioner Assembly options

Dayco 89481 Accessory Drive Belt Tensioner Assembly

The Dayco 89481 is an automatic accessory drive belt tensioner assembly built for serpentine belt systems. It uses a clockwise operating direction and a single 8-groove pulley to maintain proper belt tension in the accessory drive system.

Key Features

  • Automatic accessory drive belt tensioner assembly
  • Serpentine belt application
  • Clockwise direction
  • Single pulley design
  • 74 mm pulley diameter
  • 8-groove pulley with 33.75 mm width

Detailed Description

Dayco 89481 is an accessory drive belt tensioner assembly for serpentine belt systems that rely on consistent belt tension to drive engine accessories. The automatic design helps maintain belt engagement as operating conditions change, while the 74 mm pulley and 8-groove profile support proper belt tracking in the accessory drive belt system. This part cross-references Gates 38516 and 38525 for the same application. It is a direct-fit style replacement for select applications including Volvo and Cummins equipment, and it also cross-references Volvo 20490732 and Cummins 3914095.

What It Helps Address

  • Belt slack in a serpentine drive system
  • Noise from a worn or unstable tensioner pulley
  • Improper belt tracking across accessory pulleys
  • Loss of consistent accessory drive tension
  • Wear related to an aging automatic tensioner assembly

Installation Notes and Tips

Verify pulley diameter, groove count, belt type, and clockwise rotation before installation. Confirm the replacement matches the original accessory drive belt tensioner assembly layout and inspect the serpentine belt, idler pulleys, and related drive components for wear at the same time. For fitment-based searches, this part is commonly referenced for Volvo and Cummins applications, including Volvo 20490732 and Cummins 3914095 cross-reference needs.

Quality Assurance

Dayco manufactures belt drive components for automotive and heavy-duty accessory drive systems. The 89481 tensioner assembly is built to match the specified pulley configuration and automatic tensioning function required by the application.

Related reading

This part fits 0 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
Directly replaces or cross-references 40 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 38516ACDelco — 38525CARQUEST — 38516CARQUEST — 38525Case — 914086Case — 87436755Cummins — 3281583Cummins — 3565151Cummins — 3914095Cummins — 3917440Cummins — 3934821Cummins — 3936205Cummins — 3936213Cummins — 3945527Cummins — 3945627Cummins — 3945849Cummins — 3957434Cummins — 3969564Cummins — 3976831Cummins — 3976834Cummins — 4063948Cummins — 4063949Cummins — 5259022Cummins — 5333499Duralast — 89481Dynacraft — D1186-2406Four Seasons — 45822Four Seasons — 45826Freshstart — 49521Gates — 38516Gates — 38525Goodyear — 49521Goodyear — 49522John Deere — RE164876Komatsu — 6252-81-6400NAPA — 38516NAPA — 38525New Flyer — 6331166SKF — VKM910021Volvo — 20490732