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ACDelco Gold 39120 Drive Belt Tensioner Assembly with 2 Pulleys

Free shipping on orders over $29.99

$39.08

$ 20 .99 $20.99

In Stock
  • Designed to keep drive belt at proper tension
  • Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
  • Premium aftermarket replacement part
  • Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models


The ACDelco Professional, premium aftermarket Automatic Belt Tensioner is designed for Accessory Belt Drive Systems (ABDS) that require an automatic belt tensioner. It ensures proper belt tension, alignment, and damping for superior performance and provides full line coverage for domestic, import, and heavy duty applications. Its patented vibration damping system increases tensioner, belt, and accessory component life and its torsional round spring design provides consistent tension and does not allow contamination. This premium aftermarket replacement automatic belt tensioner is manufactured to meet your expectations for fit, form, and function.


james blade
2025-09-02 13:20:04
Product works great!
SPS
2025-06-14 20:04:58
Perfect fit for my 2003 Dodge Durango (4.7 engine). The original one had a bad bearing and was screeching very loudly. It now works great. Of course changed the belt too.
Gabo
2025-05-30 14:18:00
Perfect fit for a Jeep Liberty 2003 V6 3.7L.It's an easy change. The only thing to consider is that the original one is metal on one of the pulleys, while this one is plastic (the black pulleys/rollers) in the product picture.When you are changing the tensioner, the one originally installed in your Jeep will be hard to get out because the bolt is kind of hidden inside the pulley and you'll need a lot of force to loosen it up. Once you do that, it is an easy change and this tensioner comes with its own bolt which is not hidden. Be sure to tight it as much as you can.
Richard Luse
2025-05-11 10:14:09
Excellent fit, good quality made a big difference in the noise from the belt system and maintaining belt tension.
Diggest Bick
2025-04-13 17:16:43
Easy installation, no play in bearings, no slop in springs. 10 minute Install.
Kanoa K.
2025-01-02 10:07:24
Spins free, no noise. I did decide to add red thread locker to the mounting bolt. It is recommended to change the tensioner whenever you change your belt (probably just another way for them to take more of our money) I didn't mind, might as well while you're taking the belt off anyway.Kept my old belt and tensioner as emergency spares in my tool box. They're still fine, belt was just getting old and im OCD about my truck making abnormal noises.
Andrew
2024-12-30 18:57:25
I had to replace my tensioner pulleys after discovering the bearings were toast while replacing my A/C clutch. The new part fits just like the old one and is doing just fine after a month.
Joe P. Blaschka Jr.
2024-12-09 13:02:52
It was as advertised. The install was easy and no more bearing noise. This was easier than changing just one idler.
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