★★★★★
May 2, 2026
Perfect replacement and it fixed the problem
Replaces
About TRQ:
TRQ is a trusted brand dedicated to making every repair a success story by combining premium parts with easy installation. Each TRQ part is engineered by a team of automotive experts to meet or exceed OEM standards, delivering enhanced performance and maximum longevity. With rigorous in-house testing, the brand ensures superior fit and function across every product line. TRQ also provides customers with best-in-class, step-by-step installation videos—so you can complete repairs with confidence, whether you're a first-time DIYer or an industry professional.
Attention California Customers:
WARNING: This product can expose you to chemicals including Lead and Lead Compounds, which are known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
This part fits 9 vehicles spanning 2016-2022.
| Year | Make | Model | Description |
|---|---|---|---|
| 2016-2019 | Cadillac | ATS | Cadillac ATS V6 3.6L Naturally Aspirated Lower Thermostat with Housing Assembly TRQ ECA42791 |
| 2020-2022 | Cadillac | CT5 | Cadillac CT5 V6 3.0L Thermostat with Housing Assembly TRQ ECA42791 |
| 2016-2020 | Cadillac | CT6 | Cadillac CT6 V6 3.6L Thermostat with Housing Assembly TRQ ECA42791 |
| 2016-2019 | Cadillac | CT6 | Cadillac CT6 V6 3.0L Thermostat with Housing Assembly TRQ ECA42791 |
| 2016-2019 | Cadillac | CTS | Cadillac CTS V6 3.6L Naturally Aspirated Thermostat with Housing Assembly TRQ ECA42791 |
| 2016-2022 | Chevrolet | Camaro | Chevrolet Camaro V6 3.6L Thermostat with Housing Assembly TRQ ECA42791 |
| 2017-2022 | Chevrolet | Colorado | Chevrolet Colorado V6 3.6L Thermostat with Housing Assembly TRQ ECA42791 |
| 2017-2021 | GMC | Canyon | GMC Canyon V6 3.6L Thermostat with Housing Assembly TRQ ECA42791 |
| 2022 | GMC | Canyon | GMC Canyon V6 3.6L Water Pump Thermostat with Housing Assembly TRQ ECA42791 |
| Brand Label | Part Number |
|---|---|
| General Motors | 12670209 |
| General Motors | 12673280 |
| General Motors | 12678784 |
| Dorman - OE Solutions | 902-2121 |
| General Motors | 12647180 |
| Motorad | 959-212 |
| Cadillac | 12647180 |
This item may be interchangeable with parts from other brands with the above part numbers. This information is provided only for reference and does not guarantee that the item you are purchasing is identical to parts with part numbers from the brands listed above. To confirm that this item fits your vehicle, use the above "Check Vehicle Fit" option.
Lifetime Warranty
This item is backed by our limited lifetime warranty. In the event that this item should fail due to manufacturing defects during intended use, we will replace the part free of charge. This warranty covers the cost of the part only.
FREE Shipping is standard on Orders shipped to the lower 48 States (Contiguous United States). Standard shipping charges apply to Hawaii, Alaska and US Territories. Shipping is not available to Canada.
Expedited is available on checkout to the United States, excluding Alaska, Hawaii and US Territories as well as P.O. Boxes and APO/FPO/DPO addresses. Final shipping costs are available at checkout.
Perfect replacement and it fixed the problem
Perfect fit and looks like an exact oem replacement.
Working great so far
Replaced a faulty thermostat in a 2017 Chevy Colorado. Don't be fooled by YouTube videos - this is tougher to do than it looks but with the right tools it can be done by DYIers. The thermostat assembly itself is functioning well but probably should have replaced the temperature sensor at the same time since that area was dissembled anyway.
Great replacement. Been 1 month post install and no issues at all. Would recommend 100%.
Great price great product
This was good, but I'm reluctant to give it 5 stars because, mine original was being problematic in the cold two years ago. That makes it 3 years old. I'm not excited about having to replace again in 3 more. Hoping it's better. I broke the retained bolt that connects the radiator hose to the thermostat. Luckily that bolt was more brittle than this part and didn't ruin the threads. Not sure what could be done other than breaking those bolts and replacing with new.
Perfect Fit....Thanks
Everything fit perfectly. I used the OEM screws since they are smooth the first 1/4" and were easier to start and not cross-thread. I couldn't start the included screws easily.
Haven't installed it yet but it exactly what I wanted
ECA42791
Includes an o-ring.
It came with the seal and new bolts.
Nooo
No, but it is best to replace them.
