


⚙️ Keep your GM running like new — tension perfected, performance guaranteed!
The ACDelco 12609719 Drive Belt Tensioner is a GM original equipment replacement part designed to maintain optimal drive belt tension. Manufactured in the USA to GM OE specifications, it ensures precise fit, reliable durability, and consistent engine performance for GM vehicles.








| Manufacturer | ACDelco |
| Brand | GM GENUINE PARTS |
| Product Dimensions | 16.51 x 10.8 x 10.8 cm; 752.96 g |
| Item model number | 12609719 |
| Manufacturer Part Number | 12609719 |
| OEM Part Number | 12609719 |
| Volume | 115 Cubic Inches |
| Manufacturer | ACDelco |
| Country of Origin | USA |
| Item Weight | 753 g |
D**L
It doesn't actually matter if the original has 2 or 3 holes
Doesn't matter if the idler pulley you removed has 3 mounting holes. Mine did and I still installed this one, just threaded in the extra bolt and torqued it to spec the same. They are otherwise identical aside from the extra mounting hole. If your water pump has ever been replaced, then you actually have no way of knowing if your truck originally had 2 or 3 mounting holes.Just install this and don't worry about it.
R**.
Just like the factory one.
Worked perfectly, make sure you check if you need this 2 bolt one or a 3 bolt. I got this as a warehouse deal because it was shipped and opened by someone that probably didn't check. Very easy to change.
G**R
Dose fit 2008 chevy silverado LS (LY5) J
OEM, thats what you want
C**R
outstanding value
Outstanding value, Top notch product, would buy again
J**F
Fit my 2013 GMC Sierra 5.3l
Half the price of the dealership. Exactly the same part I took off my 2013 GMC Sierra 5.3l