Keep every accessory spinning smoothly with the Dayco drive belt tensioner (P/N 89698), a direct-fit replacement that drops into the 2011-2014 Ford F-150 with the V8-5.0L engine. This tensioner applies constant load to the serpentine belt, taking up slack so the belt tracks correctly across the accessory pulleys and maintains proper grip.
As the tensioner wears, you may hear belt squeal or chirp, notice belt flutter, or see uneven belt wear. If a worn or failing tensioner is the cause, this Dayco accessory drive belt tensioner assembly is designed to restore correct belt tension. Inspect the belt and other drive components while servicing.
See the Buyer's Guide tab to confirm your vehicle.
Interchange: 39299 · 49822 · 999831A · NBH39299
This part cross-references / interchanges with the following part numbers:
What does this Dayco serpentine belt tensioner do?
It uses its pulley to apply constant load to the serpentine belt, taking up slack so the belt keeps proper grip and alignment across the accessory pulleys.
Will this tensioner fit my 2011-2014 Ford F-150 5.0L?
It is a direct-fit replacement for the 2011-2014 Ford F-150 with the V8-5.0L engine. Check the Buyer's Guide tab to confirm your exact vehicle.
What are signs my belt tensioner may need replacing?
Belt squeal or chirp, belt flutter, or uneven belt wear can point to a worn tensioner. Diagnose the cause before replacing, since a worn belt can produce similar symptoms.
What size is the pulley on P/N 89698?
It has a single flat pulley measuring 70 mm in diameter and 26 mm wide, with counter-clockwise tensioner rotation.
Where is this tensioner located?
This unit serves the air conditioning accessory drive on the listed application. It is designed for the serpentine belt system.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
