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⚙️ Keep your GM running like new—because every detail counts!
The GM Genuine Parts 12670574 Drive Belt Tensioner is a spring-loaded pulley assembly engineered and rigorously tested by General Motors to maintain optimal serpentine belt tension. Designed as a direct OEM replacement for Chevrolet, Buick, GMC, and Cadillac vehicles, it ensures precise fit and reliable performance. Made with durable materials and backed by a 24-month unlimited mile warranty, this tensioner helps prevent engine belt slippage and premature wear, making it a smart upgrade for proactive vehicle maintenance.
| ASIN | B01M1B18MY |
| Belt Style | serpentine |
| Best Sellers Rank | #99,311 in Automotive ( See Top 100 in Automotive ) #73 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 229 Reviews |
| Global Trade Identification Number | 00808709557715 |
| Included Components | Auto part |
| Item Type Name | Drive Belt Tensioner Assembly |
| Item Weight | 2.1 pounds |
| Manufacturer | ACDelco |
| Material | Rubber |
| Material Type | Rubber |
| Number of Items | 1 |
| 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. |
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 it’s one of those things where while you’re already in there, and it’s easy and cheap to do, just do it.
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 👍👍!
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.
B**D
Perfect replacement
Perfect replacement for 2018 GMC Sierra 5.3. Identical to the original.
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.
K**N
Gm Part
Happy to see GM part number on box.
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
2 weeks ago
2 weeks ago