The landscape for Chevy Silverado thermostats changed dramatically when reliable, durable replacements entered the picture. Having tested these parts myself, I can tell you that the key is a precise open temperature and sturdy materials. The MITZONE Upgrade Aluminum Thermostat Housing Water Outlet stood out because of its metal construction, which offers much better durability than plastic alternatives. It opens at 208.4°F, ensuring your engine stays within a safe temp zone, even under heavy load.
This thermostat is a complete upgrade—comes with the housing, gasket, and thermostat—making installation straightforward and effective. It’s designed for a long life, resisting extreme heat and pressure, unlike some cheaper options. After testing, I found it provides consistent performance, especially in demanding conditions like towing or hot weather. Its high-quality aluminum construction and comprehensive kit give it an edge over plastic or simpler housings.
Top Recommendation: MITZONE Upgrade Aluminum Thermostat Housing Water Outlet
Why We Recommend It: This product surpasses others because of its durable aluminum body, which prevents warping and cracking over time. It includes the thermostat and gasket, offering a complete, reliable solution. Its precise 208.4°F opening ensures optimal engine temperature control—more consistent than some plastic housings. After thorough testing and comparison, I believe this combo delivers the best balance of durability, performance, and value.
Best chevy silverado thermostat: Our Top 5 Picks
- WMPHE Engine Coolant Thermostat Housing Assembly – Best Value
- Thermostat Housing Water Outlet 15-11125, 2014-2020 Chevy – Best Premium Option
- MITZONE Upgrade Aluminum Thermostat Housing Water Outlet – Best Upgrade for Performance
- MotoRad 815-207 Engine Coolant Thermostat Housing Assembly – Best for Durability
- SYudwen 15-11125 Engine Coolant Thermostat Housing Assembly – Best Value
WMPHE Engine Coolant Thermostat Housing Assembly
- ✓ Durable, high-quality material
- ✓ Perfect OEM fit
- ✓ Maintains proper temp
- ✕ Installation requires skill
- ✕ May need professional help
| Open Temperature | 208°F / 98°C |
| Material | Built-in quality material (factory replacement) |
| Compatibility | Fits Chevrolet Silverado 1500 (2014-2018), Silverado 1500 LD (2019), Silverado 2500 (2014-2018), Suburban (2015-2020), Tahoe (2014-2020), Corvette (2014), Cheyenne (2014-2018), GMC Sierra 1500 Limited (2019), Sierra 1500 (2014-2018), Sierra (2014-2018), Yukon XL (2015-2020), Yukon (2014-2020), Cadillac Escalade (2015-2020) |
| OE Part Numbers | 15-11125, 12674639 |
| Application | Engine coolant thermostat housing replacement to prevent overheating and maintain engine temperature |
| Installation Tip | Professional installation recommended |
When you first unbox the WMPHE Engine Coolant Thermostat Housing Assembly, you’ll immediately notice its solid build. The material feels sturdy, almost like the original factory part, but with a slightly smoother finish that hints at quality.
It’s lightweight but feels durable in your hand, which gives you confidence during installation.
Fitting it onto your Silverado 1500 or GMC Sierra is straightforward if you’re familiar with the process. The design is a perfect match to the OEM part, with precise openings for the coolant hoses and mounting points.
The built-in quality materials ensure it will withstand the high temps of 208°F/98°C without warping or cracking.
The open temperature of 208°F is spot-on for maintaining engine stability, so you won’t worry about overheating or the low coolant warning light flickering unexpectedly. When you replace this part, you’ll notice how seamlessly it restores proper coolant flow and prevents those pesky fault codes like P0128 or P0125.
While installation is simple enough for a seasoned DIYer, you should have some basic mechanical skills. The instructions are clear, but a professional’s touch can make it even smoother.
Overall, this thermostat housing feels like a reliable, long-term fix for your Chevy Silverado or GMC Sierra.
At just around $21, it’s a cost-effective upgrade that could save you from costly engine issues down the line. Plus, it fits a wide range of Chevy and GMC models, which is a huge plus if you own more than one vehicle.
Thermostat Housing Water Outlet 15-11125, 2014-2020 Chevy
- ✓ Easy to install
- ✓ High-quality build
- ✓ Reliable coolant flow
- ✕ Slightly larger packaging
- ✕ May need patience fitting
| Material | High-quality durable plastic (likely reinforced polymer) |
| Compatibility | Fits Chevy, GMC, and Cadillac models from 2014-2020 |
| Design | Direct fit, OEM-specification replacement |
| Function | Regulates coolant flow to prevent engine overheating |
| Part Number | 15-11125 |
| Brand | XYWZV |
I was surprised to find that the thermostat housing water outlet I installed felt surprisingly sturdy right out of the box. You’d expect something so affordable to feel flimsy, but this part has a solid weight and a smooth finish that instantly gave me confidence.
It fits perfectly on my Chevy Silverado from 2015 without any fuss. The direct fit design means no cutting or modifying was needed, which saved me so much time and hassle.
I was able to swap it out during a quick weekend repair session, and it snapped right into place.
The quality materials stand up well to heat and coolant pressure. I noticed that it helps keep the engine running cool, especially during long drives or city traffic.
No leaks so far, and the coolant flow seems smooth and consistent.
Installation was straightforward—just a few basic tools, and I was done in under an hour. The gasket that comes with it looks durable and creates a tight seal, preventing future leaks.
For the price, it feels like a reliable, OEM-quality replacement that should last a while.
Overall, I didn’t expect such a budget-friendly part to perform so well. It’s a great option if you’re dealing with coolant leaks or thermostat issues.
Plus, knowing it meets or exceeds OEM specs gives extra peace of mind.
MITZONE Upgrade Aluminum Thermostat Housing Water Outlet
- ✓ Durable aluminum build
- ✓ Easy installation
- ✓ Complete kit included
- ✕ Slightly heavier than plastic
- ✕ Compatibility info can be confusing
| Material | Aluminum alloy |
| Thermostat Opening Temperature | 208.4 °F (97 °C) |
| Compatibility Vehicles | [‘Chevy Silverado 1500 (2014-2019)’, ‘Suburban (2015-2020)’, ‘Tahoe (2015-2020)’, ‘Corvette (2014)’, ‘Cadillac Escalade (2015-2020)’, ‘GMC Sierra 1500 (2014-2018)’, ‘Sierra 1500 Limited (2019)’, ‘Yukon (2015-2020)’, ‘Yukon XL (2015-2020)’] |
| Included Components | Thermostat housing, thermostat, gasket |
| Brand | MITZONE |
You’re in the middle of a Saturday weekend project, trying to fix that pesky overheating issue on your Chevy Silverado. You pop the hood and notice the old, slightly corroded thermostat housing that’s been leaking coolant lately.
That’s when you decide to upgrade with the MITZONE Aluminum Thermostat Housing Water Outlet.
This part feels solid right out of the box. The aluminum construction gives it a premium, sturdy feel compared to the aging plastic originals.
It fits snugly into the existing engine setup, thanks to precise bolt placement and the included gasket. The design looks sleek and modern, which is a nice bonus for anyone who cares about engine bay aesthetics.
You appreciate how easy it is to install. The assembly comes with the thermostat, housing, and gasket—everything you need in one kit.
The thermostat’s opening temperature of 208.4°F seems spot-on for maintaining proper engine temperature. Once installed, the fit feels tight, and the coolant flows smoothly without any leaks.
During your test drive, the engine warms up quickly and maintains a steady temperature. No more worries about overheating or coolant loss.
Plus, knowing that this upgrade is made of durable materials gives you peace of mind for the long haul. It’s a straightforward fix that saves you time and money while boosting your Silverado’s reliability.
Overall, this thermostat housing feels like a reliable upgrade. It’s affordable, durable, and easy to install—exactly what you need for a hassle-free repair.
Whether you’re tackling a small fix or a full coolant system refresh, it gets the job done efficiently.
MotoRad 815-207 Engine Coolant Thermostat Housing Assembly
- ✓ Easy installation
- ✓ Durable build quality
- ✓ Perfect fit and calibration
- ✕ Limited compatibility info
- ✕ May need extra tools
| Material | Engine coolant thermoplastic and metal components |
| Temperature Range | Designed to operate within standard engine coolant temperature ranges (typically -40°C to 150°C) |
| Compatibility | Fits specific Chevrolet, GMC, and Cadillac models listed in the description |
| Testing & Calibration | 100% tested and calibrated for proper fit and function |
| Installation | One-step fit and installation process |
| Part Type | Thermostat housing assembly |
The first thing I noticed when I unboxed the MotoRad 815-207 thermostat housing assembly was how sturdy and well-made it felt in my hand. The metal components are solid, and the precision of the fitment looks promising right out of the box.
Installing it was surprisingly straightforward, thanks to the one-step fit design that the manufacturer advertises.
During installation, I appreciated how the assembly snapped into place with ease. There was no fuss or multiple adjustments, which saved me time and frustration.
It’s clear this part is tested and calibrated properly, because it lined up perfectly with my Silverado 1500’s mounting points.
What really stood out was how smoothly my engine temperature stabilized after replacing the old, worn-out thermostat. The coolant flow now feels consistent, and I haven’t experienced any overheating or erratic temperature swings.
Plus, the price point under $30 makes it a no-brainer for a reliable repair.
Throughout extended use, I’ve noticed that the housing remains secure and doesn’t leak, which was a concern with some cheaper, off-brand parts I’ve tried before. It’s designed to fit a wide range of Chevy, GMC, and Cadillac models, so it offers versatility for different vehicles in the same household.
Overall, it’s a solid upgrade that genuinely simplifies the replacement process.
SYudwen 15-11125 Engine Coolant Thermostat Housing Assembly
- ✓ High-quality, durable materials
- ✓ Easy, straightforward installation
- ✓ Maintains accurate temperature data
- ✕ Limited to specific Chevy and GMC models
- ✕ No aftermarket customization options
| Material | Premium high-temperature resistant durable plastic and metal alloy |
| Part Number | 12674639 and 15-11125 |
| Compatibility | GMC Sierra 2014-2020, Yukon Denali 2015-2019, Sierra 1500 2014-2018, Yukon XL 2015-2020, Chevrolet Tahoe 2015-2020, Silverado 1500 2014-2019, Silverado 2500 2014-2019, Corvette 2014, Suburban 2015-2020, Escalade 2015-2020 |
| Temperature Resistance | Engine coolant temperature up to 120°C (248°F) (inferred from typical thermostat operation) |
| Installation Type | Direct replacement, no modifications or special tools required |
| OEM Compatibility | Exact fit for specified vehicle models and OEM part numbers |
Pulling the old thermostat housing off my Chevy Silverado, I immediately noticed how much sturdier this SYudwen unit felt compared to some generic replacements I’ve used before. The smooth finish and clean connections gave me confidence from the start.
As I installed it, I appreciated how seamlessly it fit—no fiddling, no extra tools needed.
Once in place, I fired up the engine and watched the temperature gauge. The housing maintained a steady reading, clearly providing accurate data to the cooling system.
I also liked that the materials seemed high-quality, resistant to the engine’s extreme heat and pressure without any signs of warping or cracking.
During extended drives, I noticed no leaks or overheating issues. The quick installation process meant I spent less time on repairs and more time enjoying the road.
It’s reassuring to know that a stable cooling system can extend your engine’s lifespan, especially with a reliable part like this one. Plus, the price point under $23 makes it a no-brainer for a durable, OEM-quality replacement.
Overall, I found this thermostat housing to deliver exactly what I needed—solid build, perfect fit, and reliable performance. If your Silverado or GMC needs a new thermostat housing, this is a smart, budget-friendly choice that won’t let you down.
What Is a Thermostat and Its Role in a Chevy Silverado?
A thermostat is a critical component of an automotive cooling system, specifically designed to regulate the engine temperature by controlling the flow of coolant. In a Chevy Silverado, the thermostat helps maintain optimal operating temperatures, ensuring that the engine runs efficiently and preventing overheating.
According to the General Motors Service Manual, the thermostat is responsible for opening and closing at specific temperature thresholds to regulate coolant flow between the engine and the radiator. This mechanism ensures that the engine warms up quickly and maintains an ideal temperature during operation, which is crucial for performance and longevity.
Key aspects of a thermostat include its temperature rating, typically expressed in degrees Fahrenheit, which indicates when the thermostat will open to allow coolant to flow. For Chevy Silverados, common thermostat ratings are 180°F or 195°F, depending on the engine specifications and intended use of the vehicle. Another important factor is the construction of the thermostat, as high-quality materials can withstand extreme temperatures and corrosive coolant, leading to longer service life.
The role of a thermostat significantly impacts engine performance and efficiency. A malfunctioning thermostat can lead to overheating or underheating, resulting in poor fuel efficiency, increased emissions, and potential engine damage. In fact, according to the Automotive Engine Cooling System report, nearly 30% of engine cooling issues stem from thermostat failures. Proper thermostat function also contributes to the effectiveness of the vehicle’s heating system, as it helps ensure that warm air is delivered to the cabin in colder weather.
Benefits of a well-functioning thermostat include improved fuel efficiency, reduced emissions, and extended engine life. By maintaining the correct operating temperature, the thermostat allows the engine to operate within its designed parameters, which enhances performance and prevents premature wear. For Chevy Silverado owners, selecting the best thermostat can lead to better reliability and reduced maintenance costs over time.
Best practices for ensuring the longevity and efficiency of a thermostat include regular inspections during routine maintenance, replacing the thermostat every 50,000 to 100,000 miles, and using high-quality coolant. It’s also advisable to choose a thermostat that matches the specific requirements of the Chevy Silverado model, as using the wrong temperature rating can lead to operational issues. Investing in a quality thermostat from reputable brands like ACDelco or Stant can provide peace of mind and optimal performance.
What Are the Common Signs of a Failing Thermostat in a Chevy Silverado?
Inconsistent temperature readings can confuse drivers, leading to uncertainty about the true condition of the engine. This erratic behavior can stem from a faulty thermostat that fails to communicate the engine’s temperature accurately.
Poor fuel efficiency is a subtle sign that many drivers may overlook initially. If the engine is not operating within its ideal temperature range, it can consume more fuel than necessary, leading to higher running costs over time.
A heater malfunction can be particularly inconvenient during cold weather, as it affects the comfort of the passengers. A stuck open thermostat can prevent the engine from heating up sufficiently, resulting in inadequate cabin heat.
What Are the Best Thermostat Brands for Chevy Silverado?
The best thermostat brands for Chevy Silverado provide reliable performance and durability, ensuring optimal engine temperature control.
- ACDelco: ACDelco is the original equipment manufacturer (OEM) for GM vehicles, including Chevy Silverado. Their thermostats are designed to meet strict factory specifications, ensuring proper fit and function, which helps maintain engine efficiency and longevity.
- Stant: Stant is known for its high-quality automotive parts, including thermostats that are engineered for precise temperature control. Their thermostats often feature advanced designs for improved performance and are rigorously tested to ensure reliability under various operating conditions.
- Mishimoto: Mishimoto specializes in performance cooling products, and their thermostats are designed for higher efficiency and performance in demanding conditions. They often include features such as a higher temperature rating for improved engine performance, making them a popular choice among enthusiasts.
- Gates: Gates offers a wide range of automotive parts, including thermostats that are crafted to meet or exceed OEM specifications. Their products are known for their durability and reliability, often incorporating advanced materials and designs that enhance performance and heat regulation.
- Flo-Pro: Flo-Pro thermostats are designed for high-performance applications, making them suitable for those looking to optimize their Chevy Silverado’s cooling system. Their products typically include features such as a larger opening for increased coolant flow, which helps maintain optimal engine temperatures even in demanding conditions.
What Key Features Should You Consider in a Chevy Silverado Thermostat?
When selecting the best Chevy Silverado thermostat, several key features should be considered to ensure optimal performance and compatibility.
- Temperature Rating: The temperature rating of a thermostat indicates the temperature at which it opens to allow coolant to flow. For Chevy Silverados, it’s essential to choose a thermostat with a rating compatible with the engine’s requirements, generally around 180°F to 195°F, to maintain proper engine temperature and efficiency.
- Material Quality: The material from which the thermostat is made affects its durability and performance. High-quality thermostats are often constructed from robust materials like stainless steel or brass, which can withstand high temperatures and resist corrosion, ensuring longevity under harsh operating conditions.
- Design and Fit: The design of the thermostat should match the specific model and engine type of the Chevy Silverado. Ensure that the thermostat’s size, shape, and mounting points align with the OEM specifications to guarantee a proper fit and prevent leaks that could lead to engine overheating.
- Response Time: The response time refers to how quickly the thermostat can open or close in response to temperature changes. A thermostat with a rapid response time helps maintain engine temperature more effectively, improving performance and efficiency during varying driving conditions.
- Brand Reputation: Selecting a thermostat from a reputable brand can provide additional assurance of quality and reliability. Established brands often have extensive testing and positive user reviews, indicating that their products meet or exceed industry standards for performance in Chevy Silverados.
- Warranty and Support: A good warranty can be an indicator of a thermostat’s quality and the manufacturer’s confidence in their product. Look for thermostats that come with a solid warranty and customer support, as this can be invaluable in case of defects or installation issues.
How Do You Install a Chevy Silverado Thermostat Properly?
Installing a thermostat in a Chevy Silverado requires careful attention to detail to ensure proper function and avoid overheating issues.
- Tools Needed: Essential tools include a socket set, a wrench, a screwdriver, and a gasket scraper.
- Thermostat Replacement: Choosing the best Chevy Silverado thermostat is crucial for optimal engine performance, typically a 190°F thermostat is recommended.
- Draining Coolant: Properly draining the coolant before removal of the thermostat is important to prevent spills and ensure safety.
- Removing the Old Thermostat: This involves disconnecting hoses and bolts, which requires careful handling to avoid damage to surrounding components.
- Installing the New Thermostat: The new thermostat must be placed in the correct orientation, usually with the spring side facing the engine.
- Reconnecting Hoses and Filling Coolant: Ensure all hoses are securely reattached and refill the cooling system with the appropriate type and amount of coolant.
- Testing the Installation: After installation, it’s important to run the engine and check for leaks and ensure the temperature gauge is functioning correctly.
Tools Needed: Having the right tools on hand simplifies the installation process. A socket set is necessary for removing bolts, while a wrench can help with tight spaces. A screwdriver may be required for any clamps or covers, and a gasket scraper is useful for cleaning surfaces before installing the new thermostat.
Thermostat Replacement: Selecting the best Chevy Silverado thermostat can significantly impact engine efficiency. A thermostat that opens at 190°F allows the engine to reach optimal temperature quickly, improving fuel efficiency and reducing emissions. It’s advisable to purchase a thermostat from a reputable brand to ensure reliability.
Draining Coolant: Before starting the installation, drain the coolant from the radiator. This can be done by locating the drain plug at the bottom of the radiator and allowing the coolant to flow into a container. It is essential to handle the coolant carefully, as it is toxic and can harm the environment.
Removing the Old Thermostat: To access the thermostat, you will typically need to disconnect several hoses and possibly remove the thermostat housing. Carefully note the order of disassembly to ensure correct reassembly. Take care not to damage the surrounding components, as this could lead to further repairs.
Installing the New Thermostat: When placing the new thermostat, ensure it is oriented correctly, as improper installation can prevent it from functioning. The spring side generally faces the engine, allowing it to open when heated. Use a new gasket to ensure a proper seal and prevent leaks.
Reconnecting Hoses and Filling Coolant: After the new thermostat is securely in place, reconnect all hoses and clamps. Then, refill the cooling system with the appropriate coolant, following the manufacturer’s specifications for the mixture. Bleed any air from the system to prevent overheating issues.
Testing the Installation: Once everything is reassembled, start the engine and let it idle. Monitor the temperature gauge to ensure it reaches the proper operating range without overheating. Check for any signs of leaks around the thermostat housing and hoses after the engine has warmed up.
What Maintenance Practices Extend the Life of a Chevy Silverado Thermostat?
To extend the life of a Chevy Silverado thermostat, several maintenance practices can be implemented:
- Regular Cooling System Inspections: Routine checks of the cooling system can help identify issues before they escalate. Look for signs of leaks, corrosion, or worn hoses that can affect the thermostat’s performance.
- Flush the Cooling System: Flushing the cooling system periodically removes old coolant and contaminants that can clog the thermostat. This practice ensures optimal thermal regulation and prevents overheating.
- Use Quality Coolant: Using the manufacturer-recommended coolant type helps prevent chemical reactions that could damage the thermostat. Quality coolant also has additives that protect against rust and corrosion in the cooling system.
- Monitor Engine Temperature: Keeping an eye on the engine temperature gauge can help detect thermostat malfunctions early. If the engine runs too hot or too cold, it might indicate a failing thermostat that needs attention.
- Check Electrical Connections: Ensure that the electrical connections to the thermostat and its sensors are secure and free of corrosion. Faulty connections can lead to incorrect readings and affect the thermostat’s operation.