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Inexplicable
August 22, 2025
Bought this for my 2008 Toyota Highlander 4WD at 225,000 miles December 2021. For anyone who has a front-wheel-drive based Toyota or Lexus with the 3.5 V6 and needs a new Serpentine belt tensioner because it's making scary noises... THIS is your solution! You will find that the tensioner is an expensive part that requires over $1,000 in labor to take apart many components of the car to get at as it's hidden behind the A/C compressor and - allegedly - requires removal of the friggin radiator. A huge engineering mistake on Toyota's part.Meanwhile someone out there did the research and discovered that this pulley will fit on the tensioner arm to replace the original pulley WITHOUT having to remove the tensioner, saving hundreds of dollars! I just hope this pulley lasts as long as the original. This pulley is the same width and diameter as the original. HOWEVER, the depth of the bearing race mounting surface (from the back rim of the pulley) is slightly different. See in my first pic, at least the way it was sent with the washer on the mount side.The OEM pulley does not have a washer on the mounting face, so I flipped the washer to the other facing side of the pulley (second pic) but the washer made contact with the pulley. So, I mocked up a mount for the washer on my drill press and used a file to grind the washer edge to a smaller diameter. Worked like a charm! This modification allowed my new pulley to work without causing a misalignment with the belt, and I am happy as a pig in mud that I was able to do this project in one day for under $150 in parts (this pulley, an OEM idler pulley and a new belt). WIN!!!
Awalkabout
July 21, 2025
Had squealing sound and diagnosed to these stock Toyota tensioner wheels/bearings. Perfect fit, easy to install, may need a torque wrench to hit the 29#'s required. I would strongly recommend replacing all of them, it's very reasonably priced, why not. There are two #2 idler wheels needed (2 of Gates 36173 Automotive Accessories) and one #1 (Gates 36174 Idler Pulley) wheel needed, these are NOT the main belt tensioner assembly but the "helper" wheels. Parts were exact fit for 2005 4runner. Easy all around install! Super Impressed with Gates, never heard of them before but quality seems excellent! Made in Canada, NOT CHINA!!!!! More Gates parts are on their way now, so impressed.
Bradley Smith
May 31, 2025
Replaced my #1 idler pulley on a 2008 Tacoma 4.0L. Item was on sale due to damaged looking g box. (Looked normal). Unfortunately didn't fix squeak... but was an easy place to start. May sound like bad bearings when spun unattached to vehicle, but once tighten up, it's silent.
aaron
May 23, 2025
As describe good purchase
Doc832
May 18, 2025
I did modify this to fit the tensioner by knocking out the bushing on the old one and pressing it into the new one. For the Idler it was a perfect fit and little messing around. Belt and two pulleys took me about 2 hours including pressing the bushing.
Chuy!
April 11, 2025
The 36174 pulley (AC and Gates) fits the Toyota 4.0 idler next to the AC unit, also named idler #1 in Toyota diagrams. The 36174 pulley also fits in the 3.5 v6 Toyota/Lexus tensioner pulleys. It's a direct fit that I discovered by chance. The other idlers pulleys in the 4.0 engines use the 36173 pulley. The quality appears top notch. It's holding up well as a tensioner pulley in our 07 ES350 with the 3.5 v6.
Chris
April 1, 2025
Nothing bad to say about this pully. It does what it supposed to. I will say this pulley was replaced along with the 3 others and it really quieted down my 4L 2nd gen Tacoma's motor. I've only got a couple K miles on the new pulley but all is good.
Michael Rodman
March 17, 2025
This part eliminated the intermittent sequel the truck was handling. Prefect fit and easy to install.
Geiennadi Faerman
March 8, 2025
Price for that pulley should be twice lover
John
March 1, 2025
Fit the bottom idler pulley on my 08 tacoma 4.0 perfectly, even came with a new bolt. I thought it was the alternator or the power steering as there was a whining noise coming from under the hood after playing in the mud, replaced the upper and lower idler pulleys and no more noise!
Arence
February 23, 2025
Dislike: NoneLike: quality built, made in Canada pulley, price is decent.Seller: Great buying experience
Customer
February 21, 2025
Matched up perfectly for my 2006 tacoma bottom idler. Took 2 minutes to change, truck idles much quieter now.
Gron
January 10, 2025
Excellent!
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