Dayco89015 6-Groove Flanged Tensioner & Idler Pulley, 70MM Diameter x 28.3MM Width x 12MM Shaft

I purchased this pulley when a tension pulley went out in my Mazda 3, 2012 2.5 Hatchback. I began hearing a winning noise in my engine when accelerating. I was able to isolate the noise by placing a small hose to my ear and the other end placing it over different areas of the engine (like a stethoscope :D). This allows the noises on the engine to be singled out by their location and enhanced so you're able to hear them better. Once I found out I was at ease as this was a quick and easy fix... Amazon had this pulley in less than 2 days at my doorstep. The installation was very simple and a matter of minutes. This pulley arrived quickly and was able to install it without any issues. It currently works as if was OEM. I haven't heard the belt squeak when the engine compartment gets wet or when starting. It was a great upgrade. I recommend changing your belt as well when replacing a pulley or when reaching 70000 miles. I would recommend this pulley to anyone needing a replacement. I also replaced my belt when changing the pulley.

Installed on a 2010 mercury Milan 2.5 -4 cylinder perfect fit look's exactly like the one the car had , purchased the car 3 years ago and had a little bit of noise and was getting louder and louder but no more noise

Just bought two of these pulleys and a Dayco serpentine belt too. The pulleys are US made and the belt in Italy. So nice to see products made outside of you know where! They sure look to be quality components for a reasonable price. Will buy more Dayco products as the need arises.

I bought this because the price was significantly less then the local O'reilly Parts. O'reilly carries Gates, which I usually prefer because of the known quality of there belts, but the pulley for this application are made in Canada with the bearing made in China. The Dayco I received was made in USA with Canadian made bearing. The Dayco pulley is identical to the stock pulley I removed from my 2001 Explorer 4.0l SOHC. Works as expected.

Perfect replacement for the tensioner pulley on a 2009 Mazda 3i 2.0L a/t

Direct replacement for my 2004 Mazda 6 with V6 engine. One thing to know is that the original pulley I removed had a special lock washer on the back of it. It was large like a fender washer but had three "pins" in the center. The three pins are intended to push into the bolt threads as you tighten the bolt against the engine block to prevent the bolt from backing out. I used a pick to pull the three pins back from the bolt and was able to reuse the washer and could feel it compressing back into the bolt when I tightened it down. Also this pulley is made from some type of plastic, the OEM was a metal pulley.

This did not fit properly and I had to switch to an OEM one. It was slightly wider which caused rubbing. I do not recommend.

Same as standard from factory