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🔥 Keep your engine cool and your ride hotter with GM Genuine Parts! ⚙️
The GM Genuine Parts 15-11125 Water Pump Outlet Assembly with Thermostat is a cast iron, one-piece OE replacement designed specifically for GM vehicles. Engineered to maintain optimal engine temperature at 205°F, it offers a direct fit, superior durability, and is backed by a 24-month unlimited mile warranty, ensuring reliable performance and peace of mind.








| ASIN | B01K8BJ7BS |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #58,185 in Automotive ( See Top 100 in Automotive ) #49 in Automotive Replacement Engine Thermostat Housings |
| Brand | GM GENUINE PARTS |
| Brand Name | GM GENUINE PARTS |
| Compatible with Vehicle Type | Car |
| Customer Reviews | 4.7 out of 5 stars 779 Reviews |
| Global Trade Identification Number | 00808709536482 |
| Item Weight | 0.55 Pounds |
| Manufacturer | ACDelco |
| Manufacturer Part Number | 12674639 |
| Manufacturer 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. |
| Material | Cast Iron |
| Material Type | Cast Iron |
| Model Number | 15-11125 |
| OEM Equivalent Part Number | 12674639 |
| Part Interchange Info | changeable |
| UPC | 808709536482 |
| Unit Count | 1.0 Count |
| Vehicle Service Type | Car |
C**A
Good original gm product
I confirmed with the seller that it is 100% genuine gm and it functions perfectly, perfect fit for my 2014 Silverado 5.3, no leaks, no high temps, no low temps, can install yourself in less then an hour
B**D
Perfect replacement.
Perfect replacement, functions just like the original before it stuck open. Lost about 1/2-3/4 of a gallon of coolant during the swap.
O**6
Exactly as Described
Fit exactly as described based on specs. Worked perfectly after install. Happy with product
D**R
Basically an OEM part!
I ordered this for my 2016 Silverado LTZ. I was having issues with the temperature barely getting above 150° most of the time it wouldn’t get above 140. And with winter rapidly approaching, I decided to give it a try. Installation was quite simple. This thermostat and housing is a one piece assembly unlike the traditional ones with an aluminum reusable housing, With this particular design you just throw the old housing away and install the whole new assembly. Everything fit perfectly the instructions were straightforward and boy What a difference in heat output. You can barely hold your hand in front of the vent now and she consistently runs at 205*F after if she warms up. Very satisfied.!!!
T**A
Perfect fit
Works great on 2015 Tahoe. Easy install and no problems or leaks.
C**R
Good quality and fit
This was a quick fix on a 2016 Chevy suburban for the cooling fans running when truck is shut off. Don’t forget the coolant sensor!
T**2
Works great
Works great solved my issue
A**R
it work great
excellent
J**.
Producto original
Excelente producto
S**L
Oem good quality
Used in for 2015 gmc Sierra . Check engine light gone . Fits like glove
A**R
قطعة أصلية
المنتج ممتاز وسعر أرخص من الوكالة
S**.
muy confiable
Excelente producto y rapido envio
G**T
Direct fit replacement
This was a direct fit replacement for my 2015 Silverado 5.3L engine. Worked perfectly and fixed the truck running cool situation. Just make sure you remove old gasket from original T-stat housing which is usually stuck to the aluminum surface or it’ll leak.
Trustpilot
3 weeks ago
2 weeks ago