Dayco Accessory Drive Belt Tensioner Assembly 89658
Dayco Accessory Drive Belt Tensioner Assembly 89658 - view 2
Dayco Accessory Drive Belt Tensioner Assembly 89658
Dayco Accessory Drive Belt Tensioner Assembly 89658 - view 2

Dayco Accessory Drive Belt Tensioner Assembly P/N:89658

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$147.99
MPN: 89658
Item Package Quantity: 1
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Dayco Accessory Drive Belt Tensioner Assembly P/N:89658
Dayco Accessory Drive Belt Tensioner Assembly P/N:89658
$147.99

Keep the serpentine belt tracking true and every engine accessory turning with the Dayco Accessory Drive Belt Tensioner Assembly 89658. This automatic tensioner applies spring-loaded force to the accessory belt so it holds proper tension across the drive. It drops in as a direct-fit replacement for the 2011-2017 Ford F-250, F-350, F-450 and F-550 Super Duty, plus the 2016-2017 Ford F-650 and F-750 — all with the V8-6.7L engine.

  • Automatic self-adjusting design: maintains consistent tension on the serpentine belt as the drive operates.
  • Single pulley: a flat pulley measuring 76 mm in diameter and 37 mm wide guides the belt.
  • Counter-clockwise rotation: matches the drive direction for the listed applications.
  • Serpentine belt type: built for the serpentine accessory drive.

A worn tensioner can show up as belt squeal or chirping, a fluttering or bouncing belt, or noise and play from the pulley bearing. If a failed tensioner is the cause of those signs, this assembly replaces it; diagnose the cause first, since other components can produce similar symptoms. Country of origin: United States.

Interchange: Manufacturer part number 89658.

This part cross-references / interchanges with the following part numbers:

39153, 49466, 999978A, BT131, BT98, 8C3Q-6B209-AB, BC3Q-6B209-AB, BC3Q-6B209-AC, BC3Q-6B209-AD, BC3Z-6B209-A, BC3Z-6B209-B

Frequently Asked Questions

What vehicles does the Dayco 89658 tensioner fit?

It's a direct-fit replacement for the 2011-2017 Ford F-250, F-350, F-450 and F-550 Super Duty and the 2016-2017 Ford F-650 and F-750, all with the V8-6.7L engine. Check the Buyer's Guide tab to confirm.

Is this an automatic tensioner?

Yes. The catalog lists it as an automatic tensioner, so it self-adjusts to maintain tension on the serpentine belt as the accessory drive operates.

What are the signs my belt tensioner may need replacing?

Belt squeal or chirping, a fluttering or bouncing belt, and noise or play from the pulley bearing are common signs. Diagnose the cause before replacing, since other components can produce similar symptoms.

What size is the pulley?

The assembly has a single flat pulley measuring 76 mm in diameter and 37 mm wide.

Where is this tensioner made?

Country of origin: United States.

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