Dayco 89710 | Accessory Drive Belt Tensioner Assembly

Part Number
Accessory Drive Belt Tensioner Assembly

Fits: 12-20 Mazda 3, 12-18 Mazda 3 Sport, 13-20 Mazda CX-5, 14-20 Mazda 6, 16-19 Mazda CX-3, 16-19 Mazda CX-9, 16-18 Mazda MX-5 Miata, 16 Scion iA, 17-18 Toyota Yaris iA, 19-20 Toyota Yaris, 20 Mazda CX-30

Special Price $77.34 Regular Price $90.99
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Dayco® Hydraulic Shock Type Accessory Belt Tensioners include tensioner and bracket, fully assembled with pulley. This tensioner is built with components made to resist rust, endure the toughest of conditions while promoting quieter performance and longer life.

BRAND: Dayco




Belt TypeSerpentine
Number of Pulleys1
Pulley 1 Diameter65
Pulley 1 FlatY
Pulley 1 Width25
TypeHydraulic Actuator



  • 2017-2018 Toyota Yaris iA
  • 2019-2020 Toyota Yaris
  • 2014-2018 Mazda 3 Sport
  • 2016-2019 Mazda CX-9
  • 2012-2020 Mazda 3
  • 2012-2013 Mazda 3 - Position: Water Pump
  • 2016-2016 Scion iA
  • 2013-2020 Mazda CX-5
  • 2016-2018 Mazda MX-5 Miata
  • 2016-2019 Mazda CX-3
  • 2014-2020 Mazda 6
  • 2020-2020 Mazda CX-30
  • 2012-2013 Mazda 3 Sport - Position: Water Pump
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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