Dayco 89304 | Accessory Drive Belt Tensioner Assembly

Part Number
Accessory Drive Belt Tensioner Assembly

Fits: 99-05 Hyundai Sonata, 01-06 Hyundai Santa Fe, 01-06 Kia Magentis, 01-06 Kia Optima, 03-08 Hyundai Tiburon, 05-09 Hyundai Tucson, 05-10 Kia Sportage

Special Price $67.14 Regular Price $78.99
In stock
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Estimated Ship Date: 1 Business Day or Less
Dayco® No Slack® Automatic Belt Tensioners are built to outperform and outlast competitive OE parts. This specific Dayco® Automatic Belt Tensioner is manufactured with a specially coated patented flat wire spring to allow the internal tension to be concentric, thus providing a more even degree of constant tension. The heavy duty cast aluminum spring case resists cracking and fatigue. Each component is built to resist rust, endure the toughest of conditions while promoting quieter performance and longer life. Dayco's specially patented Deflected Arm Plate dampens arm movement, prolonging the life of the tensioner by limiting the amount of rotational movement.

BRAND: Dayco




Belt TypeSerpentine
DirectionCounter Clock Wise
Number of Pulleys1
Pulley 1 Diameter82
Pulley 1 FlatY
Pulley 1 Width26



  • CARQUEST: 38149
  • Hyundai: 25281-37120
  • Duralast: 305304
  • Freshstart: 49273
  • Gates: 38149
  • Kia: 25281-37120
  • Goodyear: 49273
  • ACDelco: 38149
  • Hayden: 5851
  • NAPA: 38149
  • Four Seasons: 45851
  • Hyundai: 25281-37101


  • 2005-2009 Hyundai Tucson
  • 2001-2006 Hyundai Santa Fe
  • 2001-2006 Kia Optima
  • 2001-2006 Kia Magentis
  • 1999-2005 Hyundai Sonata
  • 2003-2008 Hyundai Tiburon
  • 2005-2010 Kia Sportage
Customer Questions
Can a serpentine belt cause smoke?
Yes, a serpentine belt can cause smoke. A serpentine belt is an essential component of a vehicle's engine system. It drives various accessories such as the alternator, power steering pump, water pump, and air conditioning compressor. If the serpentine belt becomes worn, damaged, or misaligned, it can cause friction and generate smoke.
Why is my serpentine belt squealing?
The serpentine belt can squeal due to various reasons, including tension issues, worn-out belt, or a problem with the belt's pulleys.
Is my serpentine belt too tight?
If your serpentine belt is causing issues like excessive noise or accelerated wear on the pulleys, it may indicate that the belt is too tight.
Why did my serpentine belt come off?
Serpentine belts can come off due to factors such as belt wear, improper tension, misaligned pulleys, or a faulty tensioner.
Please, mind that only logged in users can submit questions

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