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The Dorman 419-109 Accessory Drive Belt Tensioner Assembly is a direct replacement part designed to ensure optimal belt tension for select vehicle models. With a focus on durability and reliability, this assembly is backed by a century of automotive expertise, making it a trustworthy choice for maintaining your vehicle's performance.
| Manufacturer | Dorman Products |
| Brand | Dorman |
| Model | Dorman 419-109: Automatic Belt Tensioner (Tensioner only) |
| Item Weight | 12.6 ounces |
| Product Dimensions | 4.6 x 3.2 x 2.7 inches |
| Country of Origin | China |
| Item model number | 419-109 |
| Is Discontinued By Manufacturer | No |
| Exterior | Machined |
| Manufacturer Part Number | 419-109 |
| OEM Part Number | 12580196; 38159; 419109; 45816; 49276; 5816; 89258; GM1413171; SK89258; 12580196; 8-12565-372-0; 8-12580-196-0 |
R**N
Works great
I installed this on my 07’ Silverado 2500HD a month ago and so far it works great. It was in a super easy place to get to and swap out.
S**T
Fit perfect
Fit my Chevy 2500! Nice quality good price.
C**8
Four Stars
Not much to say about an Idler Pulley. Item was as described, Fit perfectly and arrived quickly. No problems.
A**R
Perfect fit
Nothing to complain about. Good fit, solid part.
A**R
stronger spring than the old original
2000 gmc 1500 , stopped the belt from running off the pulley....
G**R
fast shipping thanks!!!
great product thanks
J**Y
Excellent
No more squeaking noise , easy fix , just release ac tension with 3/8 drive socket slip belt off( on 03 suburban), remove the 2 16mm bolts with socket , remove old tensioner and replace with new tension tighten the 2 bolts ,pull tensioner replace belt properly and done turn on to test your done
C**X
Not Solid Enough
I had the whirring issue with my a/c compressor but did not know it was a common issue at the time. I thought I would replace my oe tensioner to solve the problem and that's why I bought the dorman belt tensioner thinking that it would be the solution to the whirring problem. Two days after I had installed the tensioner I noticed the whirring issue had not gone away, but I still kept using my a/c. While driving at highway speed about two miles from home. I heard this sound of something hitting the bottom of my suburban at the time I was not sure what it was. I just thought maybe it was a rock. A few minutes later the a/c stopped blowing cold air. When I got home I check to see if everything was okay. I looked at the a/c compressor and everything was there minus the tensioner pulley. Apparently the vibrations were too much for the arm and pulley. When the pulley came apart it almost burst my trans cooler lines. So, I decided to go with the goodyear tensioner. a/c still works albeit with the whirring noise but it seems to be more sturdier than the dorman unit. By the way I am also using the gator back belt
A**R
Five Stars
Fit perfectly and finally fixed that annoying squeek
T**E
Poor quality control
It fell apart before I could install it. I had to drill and tap the casting to bolt it together.
Trustpilot
3 weeks ago
5 days ago