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⚙️ Keep your engine running smooth with GM’s precision tensioner – because your ride deserves the best!
The GM Genuine Parts 12670574 Drive Belt Tensioner is a spring-loaded pulley assembly designed to maintain proper serpentine belt tension, ensuring optimal engine performance. Engineered and tested to rigorous GM standards, it offers a direct OE fit for GM vehicles, backed by a 24-month unlimited mile warranty for dependable durability.





| ASIN | B01M1B18MY |
| Belt Style | serpentine |
| Best Sellers Rank | #59,384 in Automotive ( See Top 100 in Automotive ) #8 in Automotive Timing Belt Tensioners |
| Brand Name | GM GENUINE PARTS |
| Color | Black |
| Compatible Devices | Automotive |
| Customer Reviews | 4.8 4.8 out of 5 stars (217) |
| Global Trade Identification Number | 00808709557715 |
| Included Components | Auto part |
| Item Type Name | Drive Belt Tensioner Assembly |
| Item Weight | 2.14 Pounds |
| Manufacturer | ACDELCO |
| Material Type | Plastic, Rubber |
| Part Number | 12670574 |
| Style Number | 12670574 |
| UPC | 808709557715 |
| Unit Count | 1 Count |
| Warranty Description | 24 Month / Unlimited Mile Limited Warranty on parts sold on or after 04/01/18. (Parts Only) Please see ACDelco.com for more details. |
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