

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.
Desertcart purchases this item on your behalf and handles shipping, customs, and support to Portugal.
โ๏ธ Keep your GM running smooth with genuine precision power!
The GM Genuine Parts 12670574 Drive Belt Tensioner is a spring-loaded pulley assembly engineered and validated by GM to maintain optimal serpentine belt tension. Designed as a direct OE replacement for Chevrolet, Buick, GMC, and Cadillac vehicles, it ensures reliable engine performance and durability. Backed by a 24-month unlimited mile warranty, this part integrates advanced materials and rigorous testing to keep your vehicle running flawlessly.





| ASIN | B01M1B18MY |
| Belt Style | serpentine |
| Best Sellers Rank | #54,689 in Automotive ( See Top 100 in Automotive ) #30 in Automotive Replacement Belt Tensioners |
| Brand | GM GENUINE PARTS |
| Brand Name | GM GENUINE PARTS |
| Color | Black |
| Compatible Devices | General Motors vehicles |
| Customer Reviews | 4.8 out of 5 stars 224 Reviews |
| Global Trade Identification Number | 00808709557715 |
| Included Components | Auto part |
| Item Type Name | Drive Belt Tensioner Assembly |
| Item Weight | 2.14 Pounds |
| Manufacturer | ACDelco |
| Material | Rubber |
| Material Type | Rubber |
| Part Number | 12670574 |
| Style Number | 12670574 |
| UPC | 808709557715 |
| Unit Count | 1.0 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. |
C**R
2015 GMC Sierra 5.3l
Exact OEM replacement. Replaced all 3 belts on my 2015 GMC Sierra 5.3l along with a new tensioner. Is a new tensioner necessary? Probably not at ~87kmi but itโs one of those things where while youโre already in there, and itโs easy and cheap to do, just do it.
B**D
Perfect replacement
Perfect replacement for 2018 GMC Sierra 5.3. Identical to the original.
M**D
Oem..is the way!
Oem is the way to go. Price was fair, fit perfect like it should with new and oem. Motor noise from bearings in the tensioner is gone now.
A**E
Good GM Part Good Price
Good GM Part, great price discounted for packaging damage, went on easy, quieted front of motor down with this and new serpentine. Went on my 2015 Silverado 1500 5.3 all stock with 130K miles on the original parts. All good ๐๐!
K**N
Gm Part
Happy to see GM part number on box.
D**S
Very good product, 2015 Chevy Tahoe
2015 Chevy Tahoe, very good product, working for 6 months and it's perfect, I recommend it.
A**R
Original GM part.
Exact GM quality replacement belt tensioner.
T**M
Acceso
Excelente
J**S
Perfecto
Tal cual para la Suburban 2016
P**T
A very good product.
Exact fit for my engine. No problem installing. Arrived early.
Trustpilot
1 month ago
2 weeks ago