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Dayco No Slack Automatic Belt Tensioner, Light Duty
See if this part fits a specific vehicle.
Dayco is a leader in research and design, manufacturing and distributing of a broad range of belts, hose, tensioners and pulleys for the automotive, trucking, construction, agricultural and industrial markets.
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Recognized by both the original equipment and the automotive aftermarket as an innovative, technologically driven organization, Dayco operates a fully integrated global network of technical facilities and sales offices employing a workforce of nearly 3,100. Dayco continues to be guided by the same primary business strategy established over 100 years ago: to anticipate and satisfy the needs of our customers by providing timely, quality products and services.
| Belt Type: | Serpentine |
| Mounting Type: | Automatic |
| Pulley Diameter: | 70 in |
| Pulley Material: | Polymer |
| Pulley Type: | Grooved |
| Pulley Width: | 28.3 in |
REVIEW SNAPSHOT®
by PowerReviewsDayco No SlackAutomatic Belt Tensioner, Light Duty
(based on 32 reviews)
Ratings Distribution
87%
of respondents would recommend this to a friend.
Pros
- Easy to install (25)
- Improves engine efficiency (10)
- Durable (9)
- Lightweight (7)
- Increases power (4)
Cons
- Difficult to install (3)
- No improvement in performance (3)
Best Uses
- Everyday driving (21)
- Replacement (15)
- Restoration (7)
- Performance driving (3)
- Car & Truck:
- Casual driver (10), Mechanic (7), Truck enthusiast (4), Auto enthusiast (3)
- Reviewer Profile:
- Casual driver (8), Auto enthusiast (5), Mechanic (4), Truck enthusiast (4)
Most Liked Positive Review
LOOKS LIKE OEM PARTS. JUST PERFECT.
VERY GOOD STRONG TENSION, IMPROVES PERFORMANCE, NON SLIPPING CLAUSES. TURNS ENGINE TIGHT WITHOUT WOBBLY! CHANGE SEPERTINE BELT WHEN INSTALL, THE BETTER AT ONCE SAMETIME INSTALL.
VERY GOOD STRONG TENSION, IMPROVES PERFORMANCE, NON SLIPPING CLAUSES. TURNS ENGINE TIGHT WITHOUT WOBBLY! CHANGE SEPERTINE BELT WHEN INSTALL, THE BETTER AT ONCE SAMETIME INSTALL.
VS
Most Liked Negative Review
expected longer life
If you need one of these go with "Gates" They specialize in them as well as serpentine belts. You pay a little more, but you get what you pay for
If you need one of these go with "Gates" They specialize in them as well as serpentine belts. You pay a little more, but you get what you pay for
REVIEWS
Reviewed by 32 customers
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Displaying reviews 1-10
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Pros
Cons
- Difficult To Install
Best Uses
Comments about Dayco No Slack Automatic Belt Tensioner, Light Duty:
Am returning.
Pros
Cons
- Difficult To Install
Best Uses
Comments about Dayco No Slack Automatic Belt Tensioner, Light Duty:
I had a bad tensioner pulley that screeched constantly. I had a mehcanic replace it with this new item. It worked for 3 days and is now screeching worse than the 12 year old original that was on the vehicle. Very disappointed.
Pros
- Easy To Install
- Improves Engine Efficiency
Cons
Best Uses
- Everyday Driving
- Replacement
- Restoration
Comments about Dayco No Slack Automatic Belt Tensioner, Light Duty:
I drive 500 to over 1,000 miles each week and depend on the vehicles I drive. Any part I replace has to stand the test of time/miles. So far this part solved the issue of a noise and was east to install. It takes only 10-15 mins.
Pros
- Easy To Install
Cons
Best Uses
- Replacement
Comments about Dayco No Slack Automatic Belt Tensioner, Light Duty:
put it on my 2000 cadillac escalade fits good.....no problem
Pros
- Easy To Install
Cons
Best Uses
- Everyday Driving
- Performance Driving
- Racing
- Replacement
- Restoration
Comments about Dayco No Slack Automatic Belt Tensioner, Light Duty:
great product
Comments about Dayco No Slack Automatic Belt Tensioner, Light Duty:
the bold that came with the tensioner has a larger hex head, and 1" shorter than the original bold. I used the original bolt. Double check with AAP, it was the correct part for the 2000 safari van.
Pros
- Durable
- Easy To Install
Cons
Best Uses
- Everyday Driving
Comments about Dayco No Slack Automatic Belt Tensioner, Light Duty:
Exact fit to oe part.
Pros
- Easy To Install
- Improves Engine Efficiency
- Increases Power
Cons
Best Uses
- Everyday Driving
Comments about Dayco No Slack Automatic Belt Tensioner, Light Duty:
Easy to install, required only one socket
Pros
- Easy To Install
- Stops belt slippage
Cons
- none
Best Uses
- Everyday Driving
- Replacement
Comments about Dayco No Slack Automatic Belt Tensioner, Light Duty:
Very simple to install. I installed it in about 5 to 10 minutes.
Pros
- Easy To Install
Cons
Best Uses
- Everyday Driving
Comments about Dayco No Slack Automatic Belt Tensioner, Light Duty:
Worked great... One bolt replacement... Can't get much easier than that..
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.
5 Questions | 7 Answers
Displaying questions 1-5
Q:
I have used two of these (thought first was defective) with two of the dayco poly rib belts, and the belts are stretching out to full tensioner extension within a few days. Then squeaks upon startup. What is the problem? The belts are the right size, having almost all of the tension left on the tensioner when installed. Both times the belt and tensioner were new. Vehicle has new alt, a/c compressor, water pump, and idler pulley as well. 98 chevy blazer.Asked on 10/14/2012 by matt from Inthewoods, NC1 answer
CUSTOMER CARE
A:
Sorry, without the presence of your vehicle we would not be able to properly diagnose it nor provide you with a 100% answer. We would suggest that you take your vehicle to a certified mechanic for further diagnosis. For further assistance, please feel free to call us at 1-877-238-2623 or visit your nearest Advance Auto Parts store and one of our representatives would be more than happy to assist you.Answered on 10/15/2012 by Steve from AAP
Q:
how do i remove itAsked on 8/25/2012 by na from co1 answer
CUSTOMER CARE
A:
We would need more information like year, make, model and engine specification of your vehicle before we can make a suggestion. For further assistance, please feel free to call us at 1-877-238-2623 or visit your nearest Advance Auto Parts store and one of our representatives would be more than happy to assist you.Answered on 8/25/2012 by Rick from AAP
Q:
first, can a bad tensioner pulley make the engine preform like it has an ignition problem? such as needing a tune up. Secondly, is the tensioner pulley supposed to move up and down when the engine is runningAsked on 8/5/2012 by pappy from pasadena Md.1 answer
CUSTOMER CARE
A:
The belt tensioner is a crucial part of any engine. Its functions include tightening the engine belt and transferring power through pulleys from the serpentine belt to the alternator. It is responsible for generating the correct amounts of tension to allow the engine to run and drive its components. Belt tensioners lose their strength and efficiency over time, which can lead to an engine failure if the belts aren't replaced. It's helpful to know the signs that the tensioner is worn or needs replacement. The car battery light will light up when the belt tensioner is failing. The battery will begin to run down due to the fact that the belt is slowing down and slipping out of its compartment. In addition, the alternator will no longer turn fast enough to power the battery. One of the main signs that a belt tensioner needs replacement is the looseness of the belt. Listen for a fluttering" noise while driving or while the car is idling. This indicates the tensioner is too loose. Other noises such as squealing or whirling from the front of the engine mean the spring inside the tensioner is weakening. In this case, the belt tensioner needs to be replaced. Rust or corrosion can build up around the tensioner, as well as dirt and mud. Rust prevents the tensioner from spinning freely, which can cause further damage to the engine. Corrosion can occur in areas with a colder climate, and where roads are heavily salted during winter. Rust also tends to distribute into other parts of the engine, including the alternator. Any damage to the automatic tensioner pulley can cause damage to the belt tensioner due to the vibrations caused by the pulley. Physical damage to the pulley is an indication of extreme tension or physical interference. 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 8/6/2012 by Vincent from AAP
Q:
Can a bad belt tensioner drain your battery? When I drive it makes a noise and my battery goes dead. I have a new alternator and a new battery. My amp guage shows only 10 amps instead of 14. Its not holding a charge. My truck has 190,000 miles on it. Could it be the problem?Asked on 1/22/2012 by joe from alexandria, ohio1 answer
CUSTOMER CARE
A:
This could possibly be the problem. However, without the presence of your vehicle we would not be able to properly diagnose it nor provide you with a 100% answer. We would suggest that you take your vehicle to a certified mechanic for further diagnosis.Answered on 1/22/2012 by DIY Daniel from AAP
Q:
can you tell me if this tensioner cmes with the pully wheel or not ? also is there a heavy duty version of this tensioner? i have a 2000 chevy express with 5.7 liter eng w/ac front and back in a conversion van! thank you jim..Asked on 7/2/2010 by buddaman1260 from orlando ,fl3 answers
VERIFIED BUYER
A:
Yes, the tensioner comes with a pulley wheel. However there is another idler pulley on the 5.7 that is sold separately.I do not know if a heavy duty model is available, but this is the stock replacement part.Answered on 9/17/2010 by Bigone from GeorgiaCUSTOMER CARE
A:
Yes the tensioner comes with the pulley.Answered on 7/9/2010 by Kevin from AAPA:
Yes it does come with the pulley wheel & bearing. Buddaman there description of Light duty pertains to Heavy Equipment applications where the engine is spinning at a constant Hi-RPM. This product will perform just fine in our highway vehicles.Answered on 12/24/2010 by I R Mechanic from Chicago, IL
Displaying questions 1-5
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if you have any questions or corrections.
