Belt Tensioner
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Belt Tensioner
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Dayco No Slack Belt Tensioner

Part No. 89241 Warranty  

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Dayco No Slack Automatic Belt Tensioners are specifically built to outperform and outlast competitive OE parts. 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.

Product Features:
  • 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 patented Deflected Arm Plate dampens arm movement, prolonging the life of the tensioner by limiting the amount of rotational movement
  • Contains a metallic locator pin built to withstand extreme drive demands and properly locate the tensioner for installation
  • Dayco's patented Nylon Pivot Bushing keeps internal components in constant contact to maintain proper tensioner alignment
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Belt Type:Serpentine
Mounting Type:Automatic
Pulley Diameter:76 in
Pulley Material:Polymer
Pulley Type:Grooved
Pulley Width:28.7 in

REVIEW SNAPSHOT®

by PowerReviews
Dayco No SlackAutomatic Belt Tensioner, Light Duty
 
3.6

(based on 15 reviews)

Ratings Distribution

  • 5 Stars

     

    (6)

  • 4 Stars

     

    (5)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (4)

71%

of respondents would recommend this to a friend.

Pros

  • Easy to install (10)

Cons

    Best Uses

    • Everyday driving (8)
    • Replacement (4)
      • Car & Truck:
      • Auto enthusiast (3), Casual driver (3)
      • Reviewer Profile:
      • Auto enthusiast (4), Mechanic (4), Casual driver (3)

    Most Liked Positive Review

     

    Works well

    Installed the automatic belt tensioner about two weeks ago with no problem. Easy one bolt install. Works just fine, holds tension like it was designed to.

    Installed the automatic belt tensioner about two weeks ago with no problem. Easy one bolt install. Works just fine, holds tension like it was designed to.

    VS

    Most Liked Negative Review

     

    Not suitable for all applications

    The position of the 3/8" connector for a ratchet/breaker bar which allows you to draw the tensioner back and install the belt, is in a different position than on the...Read complete review

    The position of the 3/8" connector for a ratchet/breaker bar which allows you to draw the tensioner back and install the belt, is in a different position than on the original. Once installed on my vehicle, the connector was too close to the strut tower to be useful. Returned to Advance and had to purchase another brand elsewhere.

    Reviewed by 15 customers

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    (1 of 1 customers found this review helpful)

     
    5.0

    Works Like A Charm

    By Steve

    from Orlando, FL

    About Me Casual Driver

    Verified Buyer
    Level 1

    Pros

    • Easy To Install
    • Perfect Fit

    Cons

      Best Uses

      • Replacement

      Comments about Dayco No Slack Automatic Belt Tensioner, Light Duty:

      This product worked as expected. I only wished the parts person would have suggested a serpentine belt tool. I understand they have tools you can use. This tool gives you some much needed leverage.

      Comment on this review(earn points)

       
      4.0

      Tensioner

      By Ed

      from Newnan, GA

      About Me Auto Enthusiast

      Verified Buyer
      Level 2

      Pros

      • Durable
      • Easy To Install

      Cons

      • No Improvement In Performance

      Best Uses

      • Everyday Driving

      Comments about Dayco No Slack Automatic Belt Tensioner, Light Duty:

      Look equal to OEM part taken off

      Comment on this review(earn points)

       
      5.0

      good replacement part

      By just your average joe

      from wadsworth ohio

      About Me Mechanic

      Ask me a question

      Verified Buyer
      3 or more reviews submitted

      Pros

      • Works Like It Sould

      Cons

      • none

      Best Uses

      • Everday
      • Everyday Driving

      Comments about Dayco No Slack Automatic Belt Tensioner, Light Duty:

      Buy it.it works.alabama abd back.1500 miles.i recommend for anyone.

      Comment on this review(earn points)

       
      4.0

      Tension Pulley

      By Bobby

      from Macon, GA

      About Me Casual Driver

      Verified Buyer
      Level 1

      Pros

      • Easy To Install

      Cons

        Best Uses

          Comments about Dayco No Slack Automatic Belt Tensioner, Light Duty:

          Great Product for a Good Price. Easy to install just one bolt to remove take the pully off and replace with new one. About a 15 minute job. Glad I did it myself and saved some money.

          Comment on this review(earn points)

           
          5.0

          belt tensioner

          By electric phil

          from chicago

          About Me Auto Enthusiast

          Verified Buyer
          Level 2

          Pros

            Cons

              Best Uses

                Comments about Dayco No Slack Automatic Belt Tensioner, Light Duty:

                I like the easy interface between online aND BRICKS AND MORTAR STORES

                Comment on this review(earn points)

                 
                5.0

                Works as it should

                By JohnnyG

                from Howell, Mi.

                About Me Mechanic

                Verified Buyer
                Level 1

                Pros

                • Easy To Install

                Cons

                  Best Uses

                  • Everyday Driving
                  • Replacement

                  Comments about Dayco No Slack Automatic Belt Tensioner, Light Duty:

                  After installing a few thousand tensioners I'll say that this is a typical belt tensioner installation job. It will be easier if you have the proper serp belt tools, but even without you should be able to do it. You must use the new bolt & washer to install the new unit.

                  Comment on this review(earn points)

                  (1 of 1 customers found this review helpful)

                   
                  1.0

                  Inspect it before leaving the store

                  By Grand AM owner

                  from Rockledge, Florida

                  About Me Mechanic

                  Verified Buyer
                  Level 1

                  Pros

                    Cons

                    • Difficult To Install

                    Best Uses

                      Comments about Dayco No Slack Automatic Belt Tensioner, Light Duty:

                      My wife picked it up for me. When I opened it, it was missing the bolt and washer. I had to drive back to the store to get a new bolt ( provide for free from Advance )as the one they sold my wife was the only one in stock. Returned home to install and the square to insert the ratchet or breaker bar was a little big, as soon as I put pressure on it to adjust the belt, the metal rounded and the breaker bar slipped. Took an hour of using different pry bars etc. to finally get the belt on. I AM NOT looking forward to when the belt needs to be replaced. There is NO easy way to move the tensioner now that the square is not square. INSPECT at the store 1. the bolt is in the box and 2. check that the square for adusting is not to loose.

                      Comment on this review(earn points)

                      (2 of 2 customers found this review helpful)

                       
                      1.0

                      had to replace

                      By cass

                      from providence,R.I.

                      About Me Mechanic

                      Level 1

                      Pros

                      • Easy To Install

                      Cons

                        Best Uses

                          Comments about Dayco No Slack Automatic Belt Tensioner, Light Duty:

                          easy to install,but spring only lasted 2 months and started chattering again

                          Comment on this review(earn points)

                          (0 of 1 customers found this review helpful)

                           
                          4.0

                          Get rid of those squeals and squeaks

                          By Cadman77

                          from Pittsburgh, PA

                          About Me Auto Enthusiast, Casual Driver, Truck Enthusiast

                          Verified Buyer
                          Level 2

                          Pros

                          • Improves Engine Efficiency
                          • Lightweight
                          • Like original equipment

                          Cons

                          • Difficult To Install
                          • Might need special tools

                          Best Uses

                          • Everyday Driving
                          • Replacement

                          Comments about Dayco No Slack Automatic Belt Tensioner, Light Duty:

                          First off I found this part to be very similar to the original part that was removed. It was a direct fit and required no modification to install. It is easy to remove and replace once the serpentine belt is removed.

                          Comment on this review(earn points)

                           
                          5.0

                          Easy to install

                          By Aric

                          from Tallahassee, FL

                          About Me Auto Enthusiast

                          Verified Buyer

                          Pros

                          • Easy To Install

                          Cons

                            Best Uses

                              Comments about Dayco No Slack Automatic Belt Tensioner, Light Duty:

                              I used the tensioner for a car that I'm selling on my friend's lot. It was easier than i thought to install. Make sure that you USE the NEW BOLT and WASHER for proper fitment.

                              Comment on this review(earn points)

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                              Do you have questions about this product?(earn points for answers!)

                               

                              Ask a question, get answers from real customers and in-house experts. Or contact Customer Care by email or call 1-877-238-2623.

                              3 Questions | 3 Answers
                              Displaying questions 1-3
                              • Q:

                                I purchased a new belt tensioner several months ago and noww I'm hearing a loud squeak comming from the belt area. Do you think I need a new tensioner?
                                Asked on 9/30/2011 by Anonymous from Odenton,MD

                                1 answer

                                • CUSTOMER CARE

                                  A:

                                  I would suggest taking your vehicle to a certified mechanic for a proper diagnosis before buying and having parts installed that may not (solve/be) the problem.

                                  Answered on 10/2/2011 by DIY Daniel from AAP
                              • Q:

                                Does anyone know hot to tighten a serpentine belt on a 2003 pontiac grand am or do i just have to buy a new belt tensioner cause the spring is messed up?Thank you
                                Asked on 10/31/2010 by RichfromJersey from nj

                                1 answer

                                • CUSTOMER CARE

                                  A:

                                  If the belt is routed correctly and the tensioner is not getting it tight, then you most likely need a new tensioner.

                                  Answered on 11/1/2010 by Mike the Auto Parts Master from AAP
                              • Q:

                                how do i replace the serpentine belt ?
                                Asked on 12/14/2009 by nipper

                                1 answer

                                • CUSTOMER CARE

                                  A:

                                  The easiest way to describe how to replace a serpentine belt is by using the belt tensioner on the vehicle to loosen the belt so you can remove it. Once removed, start putting the new belt on according to the belt routing diagram and when you are ready to finish installing the belt, use the belt tensioner again to finish putting the belt on and to tighten the slack on the belt. This is just an easy way to describe how to do it. Depending the vehicle year, make, model and engine size, it may be different.

                                  Answered on 12/14/2009 by Mike from Advance Auto Parts
                              Displaying questions 1-3

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