Automatic Belt Tensioner
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Automatic Belt Tensioner
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CARQUEST by Dayco Automatic Belt Tensioner

Part No. 89229 Warranty Details  
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CARQUEST by Dayco® Automatic Belt Tensioners are specifically built to outperform and outlast competitive OE parts. Each component is built to resist rust, endure the toughest of conditions while promoting quieter performance and longer life.

Product Features:
  • The heavy duty cast aluminum spring case resists cracking and fatigue
  • The patented Deflected Arm Plate dampens arm movement, prolonging the life of the tensioner by limiting the amount of rotational movement
  • Made in the USA
  • Includes installation instructions
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Belt Type:Serpentine
Mounting Type:Automatic, Intergal
Pulley Diameter:100 in
Pulley Material:Steel
Pulley Type:Flat
Pulley Width:28 in


by PowerReviews
CARQUEST by DaycoAutomatic Belt Tensioner

(based on 2 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 2 customers

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ez install


from portland maine

See all my reviews

Verified Buyer
Helpful Reviewer


  • Easy To Install
  • Improves Engine Efficiency
  • Increases Power


    Best Uses

    • Performance Driving

    Comments about CARQUEST by Dayco Automatic Belt Tensioner:

    very easy to install

    • Car & Truck:
    • Auto Enthusiast, Mechanic

    (4 of 4 customers found this review helpful)


    Overpriced Junk


    from Warren, Ohio

    Helpful Reviewer


    • Lightweight


    • No Improvement In Performance

    Best Uses

    • Everyday Driving

    Comments about CARQUEST by Dayco Automatic Belt Tensioner:

    Junk, Plain and Simple overpriced Junk. Lasted about 2 months and the pulley/spring bent leaving the serpentine belt riding misaligned causing a noticeable, repetitive squeak. People looked at me with the "white trash car" look because of the noise. You get what you pay for, so pay more for a better tensioner and you won't have these problems.

    • Car & Truck:
    • Casual Driver

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    Do you have questions about this product?


    Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

    1 Question | 1 Answer
    Displaying question 1
    • Q:

      Plz tell me what is the size of the bolt on this tensioner? Thank you.
      Asked on 1/10/2013 by alex from jacksonville florida

      1 answer



        This Dayco No Slack Automatic Belt Tensioner, Light Duty - part# 89229 uses a 13mm bolt to hold the pulley to the belt tensioner and you would need 15mm bolt to attach the belt tensioner to the vehicle. For any further assistance, please visit your nearest Advance Auto store or call us directly at 1-877-ADVANCE (238-2623) and one of our representatives there would be more than happy to assist you.

        Answered on 1/10/2013 by Vincent from AAP
    Displaying question 1

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