Note: This article contains affiliate links. If you click on these links and make a purchase, I may earn a small commission at no extra cost to you. This helps support my research and content. Read my full affiliate disclosure here.
If your 2010-2018 Ram 2500 shows temperature swings, poor cabin heat, or persistent overheating, replacing the thermostat is often a decisive repair. The right thermostat restores consistent coolant circulation and correct operating temperature so the engine runs efficiently and components last longer. This guide covers six well-suited thermostat options for the 2010-2018 Ram 2500, shortlisted for reliable fitment, thermal response, and sealing performance.Below we outline what matters when choosing a replacement, summarize the strengths of each shortlisted option, and explain practical installation and diagnostic tips to help you pick the best fit for your needs.
Looking for other parts? See all Ram 2500 parts & accessories.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | XCZBX Engine Coolant Thermostat with Gasket, 203°F (95°C) |  |
| Best Quality Built to a higher standard if you want something more solid | RICHWEI Engine Thermostat 203°F (52028898AE Replacement) |  |
| Best Value The sweet spot between price and what you get | Techie Engine Thermostat 52028898AE (compatible with select 5.7L–6.4L V8 Chrysler engines) |  |
| Best Budget The cheapest option that still gets the job done reliably | UOIENRT 203°F Engine Thermostat Replacement for Ram 1500/2500/3500 5.7L (2003–2018) and Compatible Chrysler/Dodge/Jeep V8s |  |
| Highest Rated A top-rated pick with lots of positive feedback | Gates Engine Coolant Thermostat for Ram 2500 6.7L L6 (2013–2019) |  |
| Most Popular A crowd favorite that many people choose with confidence | MotoRad 416-180 Engine Coolant Thermostat with Seal |  |
1. XCZBX Engine Coolant Thermostat with Gasket, 203°F (95°C)
| Manufacturer Part Number | 52028898AE |
|---|---|
| Material | Rubber, Metal |
| Opening Temperature | 203°F (95°C) |
This XCZBX thermostat is a straightforward replacement designed to regulate coolant flow by opening at 203°F (95°C). It ships with a rubber gasket and uses a metal-and-rubber construction intended for long service life. Installation is the same as a factory-style swap and suits routine maintenance or replacing a failed thermostat in compatible V8 models. In use it maintains operating temperature by modulating coolant entry to the radiator, which helps the engine reach and hold its designed temperature quickly and avoid overheating once warm. The package is minimal but includes the gasket needed for a single installation. Limitations are typical of aftermarket thermostats: fitment must be confirmed against the OEM part number before ordering and it does not include additional hardware beyond the gasket. For drivers seeking a simple, direct replacement that restores proper coolant control, this unit covers the basics without added features.
Best for: Drivers who want a reliable, no-frills replacement thermostat to restore proper engine temperature control during regular maintenance on supported V8 vehicles.
Less Ideal for: Those looking for upgraded performance thermostats with modified opening temperatures or bundled installation kits should consider other options.
- Factory-style function opens at 203°F (95°C) to regulate engine temperature
- Includes a rubber gasket for one complete thermostat replacement
- Metal and rubber construction designed for durable service life
- Direct-replacement design simplifies installation during routine maintenance
- Aftermarket fit requires verifying part number compatibility with the vehicle before purchase
- Package contains only the thermostat and gasket with no extra mounting hardware
Verdict: A straightforward factory-style replacement thermostat that reliably restores proper coolant regulation for compatible V8 trucks and SUVs.
2. RICHWEI Engine Thermostat 203°F (52028898AE Replacement)
| Manufacturer | RICHWEI |
|---|---|
| Model | JWQ-4 |
| Manufacturer Part Number | 52028898AE |
| Opening Temperature | 203℉ |
This RICHWEI thermostat is a direct replacement-style unit rated to open at 203°F and intended for late-model Chrysler-family V8 engines including Ram 5.7L applications from the 2010s. Installation follows the same steps as a factory thermostat and it is supplied as a single metal thermostat designed to restore proper coolant flow and operating temperature control. For performance-minded owners a 203°F opening point can help the engine run warmer under load, which can improve thermostat stability and maintain higher coolant temperatures for reduced warm-up time to efficient operating range. The unit is straightforward and compact, and the manufacturer calls out compatibility with many Ram 1500/2500/3500 5.7L model years covered in the listing. Keep in mind this is an aftermarket replacement, so fit and finish or long-term durability may vary versus factory-quality parts, and you should confirm exact fitment for your Ram 2500 year and engine before purchase.
Best for: Drivers who prioritize maintaining slightly higher operating temperature for consistent performance and quicker warm-up on a 2010–2018 Ram 2500 with the 5.7L V8.
Less Ideal for: Owners seeking an exact factory-specified replacement with guaranteed OEM fitment and long-term warranty coverage should consider dealer or branded factory-quality options.
- 203°F opening temperature suits higher operational thermostat targets desirable for performance tuning
- Compatible with many Chrysler-family V8 engines including Ram 2500 5.7L model years listed
- All-metal exterior construction for basic durability
- Compact, OEM-style form factor that installs like the factory thermostat
- Aftermarket part where long-term reliability and exact tolerances may differ from factory-quality units
Verdict: Choose this 203°F aftermarket thermostat if you want a simple replacement that helps the 5.7L Ram 2500 reach and hold a warmer operating temperature for performance-oriented driving.
3. Techie Engine Thermostat 52028898AE (compatible with select 5.7L–6.4L V8 Chrysler engines)
| Opening Temperature | 203 °F |
|---|---|
| Manufacturer | Techie |
| Model | TQTS8898 |
| Exterior | Machined |
This Techie thermostat is a direct replacement-style unit made to restore proper coolant flow and temperature control in compatible Chrysler V8 engines. It installs in place of the factory thermostat and is used to regulate coolant circulation so the engine reaches and maintains normal operating temperature; the listed opening temperature is 203°F, which matches many factory thermostats for performance V8s. Machined exterior construction suggests durable fitment and the part lists several OEM cross-reference numbers to help confirm compatibility. For routine maintenance or replacing a failed thermostat that causes overheating, slow warm-up, or heater issues, this unit provides a straightforward fix without altering engine behavior. Limitations include a single fixed opening temperature and fitment restricted to the specific model years and V8 displacements shown; buyers must confirm exact part numbers against their vehicle. There is no mention of a gasket or housing included, so expect to reuse or separately purchase any required seals during installation.
Best for: Buyers who prioritize restoring reliable, factory-like temperature control on Chrysler V8 engines and want a straightforward replacement part that matches original operating behavior.
Less Ideal for: People looking for performance-tuned thermostats with different opening temperatures or those who need a complete housing kit included should consider other options.
- Factory-style 203°F opening temperature for predictable engine warm-up and cooling
- Machined exterior construction for durable, serviceable fitment
- Multiple listed OEM cross-reference numbers to simplify compatibility checks
- Compact, lightweight design that is easy to handle during installation
- No gasket or housing included in the listing so additional parts may be required for installation
- Single fixed opening temperature offers no performance tuning options
Verdict: Choose this thermostat if you need a simple, factory-aligned replacement to restore correct operating temperature control on compatible Chrysler V8 vehicles.
4. UOIENRT 203°F Engine Thermostat Replacement for Ram 1500/2500/3500 5.7L (2003–2018) and Compatible Chrysler/Dodge/Jeep V8s
| Opening temperature | 203°F |
|---|---|
| Replacement part number | 52028898AE |
| Manufacturer | UOIENRT |
This UOIENRT 203°F thermostat is a straightforward, economy-minded replacement intended for Ram 1500/2500/3500 trucks with the 5.7L V8 and similar Chrysler/Dodge/Jeep V8 platforms. It installs in the factory cooling system to regulate coolant flow and maintain normal operating temperature at roughly 203 degrees Fahrenheit. The part advertises build quality checks and is offered as a direct-fit replacement for part number 52028898AE, which simplifies installation for DIYers or mechanics familiar with these trucks. Practical benefits include a correct temperature rating for performance V8 applications and lightweight, compact packaging that contains the complete thermostat unit. Limitations are typical for low-cost aftermarket parts: long-term durability under heavy towing or extreme-duty cycles is not proven here and the listing does not provide detailed material specs. If you need a no-frills, affordable replacement to restore proper engine warm-up and cooling control, this unit covers the basics well, but owners seeking a heavy-duty or upgraded performance thermostat may want a branded or higher-spec option.
Best for: Budget-minded owners of 2010–2018 Ram 2500 with the 5.7L V8 who need a straightforward replacement thermostat to restore correct engine operating temperature without paying for premium brands.
Less Ideal for: Owners who routinely tow heavy loads, run extended high-temperature duty cycles, or want an upgraded performance thermostat with documented heavy-duty materials and testing.
- Direct-fit replacement for part number 52028898AE for compatible Ram 5.7L V8 models
- Rated to open at 203°F which matches common performance V8 cooling targets
- Lightweight, compact unit that is easy for DIY installation
- Undergoes manufacturer quality checks and testing during production
- Long-term durability under heavy towing or high-mileage use is not documented
Verdict: A low-cost, direct-fit 203°F thermostat that gets a 5.7L Ram 2500 back to proper operating temperature without frills.
5. Gates Engine Coolant Thermostat for Ram 2500 6.7L L6 (2013–2019)
| Compatible vehicles | Ram 2500 2013-2019 6.7L L6 |
|---|---|
| Manufacturer | Sixity Auto |
| Manufacturer part number | 4036024480 |
This thermostat is a factory-style replacement intended to restore correct engine temperature control on Ram 2500 6.7L L6 trucks from 2013–2019. It installs in the cooling system the same way as the original part and ships with the seal and required hardware for a straightforward swap. The unit is marketed as a genuine Gates-style part and aims to provide consistent open/close temperatures to prevent overheating and reduce cold-start wear. For routine maintenance or when a failed thermostat is diagnosed, this part simplifies repair because it matches the original fitment and mounting points. Expect dependable temperature regulation after installation, though installation access on diesel trucks can still require some disassembly and basic hand tools. This is a single-purpose replacement part so plan to inspect related cooling components at the same time, such as hoses and coolant condition, to avoid repeat labor.
Best for: Buyers who prioritize dependable, factory-style cooling system repairs and want a straightforward thermostat swap to restore proper engine temperature control.
Less Ideal for: People looking for performance-modified thermostats with different temperature ratings or those who need a universal part for multiple vehicle types.
- Direct-fit replacement for Ram 2500 6.7L L6 (2013–2019) for straightforward installation
- Includes seal and hardware needed for installation
- Designed to reproduce factory temperature control for reliable engine operation
- Compact, OEM-style design that fits existing mounting and plumbing
- Replacement covers only the thermostat; related cooling components may still need service
- Installation on some trucks can be moderately time consuming due to engine bay access
Verdict: A reliable, factory-style replacement thermostat that restores proper temperature control on 2013–2019 Ram 2500 6.7L diesel trucks.
6. MotoRad 416-180 Engine Coolant Thermostat with Seal
| Brand | MotoRad |
|---|---|
| Model | 416-180 |
| Position | Center |
The MotoRad 416-180 is a direct-fit replacement thermostat sold with its sealing gasket to restore proper engine temperature control on compatible Dodge, Ram, Jeep, and Chrysler models. It installs in the center position and is machined for a precise mating surface, which helps reduce leaks when replacing an aging or failed unit. In everyday use it regulates coolant flow the same way a factory thermostat does, opening at its designed temperature to allow coolant circulation and closing to help the engine warm up quickly. Buyers will appreciate the simple, OEM-style design and the included seal that makes swapping the part straightforward during routine cooling system service. The part covers a wide range of model years for Ram 1500/2500/3500 and related vehicles, so it is useful for DIY mechanics and technicians doing brake-in replacement. Limitations are that fitment must be verified against your specific engine and year and this is a mechanical thermostat without advanced features like staged opening or a replaceable sensor element.
Best for: A buyer who values proven, straightforward replacement parts and relies on peer feedback to pick a dependable, no-frills thermostat for routine cooling system repairs.
Less Ideal for: Drivers wanting programmable or performance thermostats with staged opening characteristics or those who need multi-vehicle universal solutions.
- Direct-fit replacement for many Dodge, Ram, Jeep, and Chrysler applications
- Machined exterior surface for better sealing and reduced leak risk
- Includes seal for a complete thermostat swap and easier installation
- Simple mechanical design matching factory temperature regulation behavior
- Requires confirming exact vehicle and engine fitment before purchase
Verdict: Choose the MotoRad 416-180 when you need a simple, OEM-style replacement thermostat with a seal that makes do-it-yourself or shop installation predictable and reliable.
Choosing the Right 2010-2018 Ram 2500 Thermostat: Key Factors to Consider
Correct Fitment And Housing Interface
Correct mechanical fitment is fundamental for the 2010-2018 Ram 2500 because an imperfect fit can cause coolant bypass, leaks, and false temperature readings. Ensure the thermostat matches the vehicle's housing flange dimensions, inlet/outlet orientations, and mounting hole pattern to avoid modification during installation.
A precise housing interface helps the thermostat seat properly against the gasket surface. Poorly matched housings increase the chance of a thermostat housing seal leak and require repeat disassembly. For owners who tow or haul, a secure, leak-free interface reduces the risk of coolant loss under load.
Thermal Opening Temperature And Hysteresis
Thermostat opening temperature and how quickly it opens with rising coolant temperature determine engine warm-up speed and operating temperature. For the Ram 2500, a thermostat that opens at the correct OEM-specified temperature helps the engine reach normal operating range efficiently without running cold.
Hysteresis, or the difference in opening and closing behavior, affects temperature stability. Narrow hysteresis yields tighter temperature control, which can improve combustion efficiency and HVAC performance. Consider thermostats that document opening temperature and show consistent repeatability in spec sheets.
Durability Under Heavy-Duty Cycles
Ram 2500 owners often subject the truck to towing, heavy payloads, and extended idling. Thermostats in this environment must resist repeated thermal cycling and maintain function under elevated coolant pressure and temperature.
Materials such as stainless components or treated brass and robust spring assemblies reduce the chance of sticking or mechanical failure. Choose thermostats with construction intended for heavy-duty use rather than economy designs that may wear prematurely under constant load.
Sealing And Gasket Quality
A reliable gasket and seal design prevents external coolant loss and protects internal coolant pathways. Thermostat housing seal leak is a common failure mode when gaskets compress unevenly or are made from low-grade materials.
Look for thermostats supplied with correctly sized gaskets or housings that accept OEM-style seals. Proper sealing reduces the chance of air ingress into the cooling system, which can lead to hotspots and corrosion. Also consider whether the replacement requires a new housing O-ring or additional sealant.
Flow Characteristics And Bypass Design
How the thermostat allows bypass flow when closed affects warm-up time and local coolant circulation. A thermostat with optimized bypass passages will maintain coolant movement through the block and heater core at idle, preventing localized overheating and ensuring timely cabin heat.
Evaluate whether the thermostat design supports sufficient flow for the truck's coolant pump capacity and any auxiliary oil or transmission coolers. Poor bypass design can cause slower warm-up or uneven temperatures under varied load.
Serviceability And Installation Requirements
Ease of access, whether the housing must be replaced, and the availability of required seals affect labor time and total repair effort. For the 2010-2018 Ram 2500, some thermostat placements require partial inlet removal or draining significant coolant, increasing the job complexity.
Choose thermostats that match the original housing footprint, include necessary gaskets, and do not require special tools. Clear fitment documentation and straightforward torque specs reduce the risk of installation errors that could cause leaks or improper operation.
Signs Your Ram 2500 Thermostat Needs Replacement
Several symptoms indicate a failing thermostat on the 2010-2018 Ram 2500. Common signs include erratic gauge readings, the engine overheating during load or hill climbs, and a lack of consistent cabin heat. Conversely, if the engine takes a long time to reach normal operating temperature the thermostat may be stuck open and allowing too much coolant flow.
Modern Ram instrument clusters can mask small temperature swings, so watch for additional clues such as fluctuating heater output, coolant odor, or visible coolant drips near the housing. Early recognition helps avoid head gasket damage or warped components under heavy-duty use.
- Erratic temperature gauge or rapid temperature swings
- Insufficient cabin heat at highway speeds or while idling
- Engine overheating under heavy load or while towing
- Coolant leakage around thermostat housing or seams
How To Diagnose Thermostat Problems Safely
Begin diagnosis with basic checks you can perform without specialized tools. Inspect the thermostat housing area for visible coolant leakage or deterioration of the housing gasket. Check coolant level and condition; contaminated or low coolant can mimic thermostat symptoms.
A simple engine warm-up observation can be revealing. Start the engine cold and monitor how long it takes to reach normal operating temperature. If the temperature rises very slowly or never reaches the expected range, the thermostat may be stuck open. If the engine quickly moves into the red or fluctuates dramatically, the thermostat could be sticking closed intermittently.
- Visual inspection for leaks and seal condition
- Monitor warm-up time and steady-state temperature
- Listen for unusual coolant flow noises at idle
Practical Installation Tips For The 2010-2018 Ram 2500
Prepare the truck by allowing the engine to cool completely and by securing the vehicle on level ground. Drain enough coolant to drop the level below the thermostat housing; capture used coolant for proper disposal. Inspect the housing mating surface and clean it thoroughly before installing a new gasket.
Use a torque wrench and follow factory torque values for housing fasteners to ensure even compression of the gasket. Replace any O-rings or seals that come with the thermostat, and consider installing new clamp or hose components if they show wear. After installation, properly bleed the cooling system to remove trapped air and verify the thermostat opens as coolant temperature climbs.
- Drain coolant below thermostat level and retain used coolant for disposal
- Clean housing mating surfaces and inspect for corrosion
- Use correct torque on fasteners and replace seals as needed
- Bleed the system to remove air and verify operation during warm-up
When To Replace The Thermostat Housing Or Related Components
If the thermostat housing shows significant corrosion, warped surfaces, or damaged bolt holes, replacing the housing is often more reliable than just swapping the thermostat. A compromised housing can prevent a proper seal and lead to recurring coolant seepage or overt leaks.
Also inspect connected hoses and clamps. If hoses feel soft, swollen, or brittle, replace them during the thermostat service to avoid future failures. In heavy-duty applications, using new clamps and fresh hose sections reduces the likelihood of coolant loss under load and simplifies future maintenance.
- Replace housing if corrosion, warping, or damage is present
- Inspect and replace adjacent hoses and clamps as preventive maintenance
- Consider new seals and fasteners to ensure a long-lasting repair
Still looking for the perfect fit?
Select your Ram 2500 configuration to see the most relevant Thermostats recommendations
How We Chose the Best 2010-2018 Ram 2500 Thermostat
We focused on criteria that directly affect performance and reliability for the 2010-2018 Ram 2500. Primary evaluation factors included mechanical fitment to the engine housing and coolant passages, which prevents bypass and seal issues; thermal opening temperature and hysteresis, which determine how accurately coolant flow matches engine demand; and build quality of the valve and spring assembly, which impacts long-term operation under heavy loads.Corrosion resistance of housing surfaces and gasket interfaces was assessed because this truck frequently sees towing and heavy-duty cycles that stress cooling components. Flow characteristics and whether the thermostat supports adequate circulation at low idle were considered to preserve oil and transmission cooling. Durability under repeated thermal cycles and resistance to sticking were also key filters.We excluded units with ambiguous fitment information, poor gasket or seal design, and materials that show rapid corrosion in service. The final list prioritizes clear fitment documentation, consistent thermal performance, robust sealing, and materials suitable for heavy-duty Ram 2500 duty cycles.
Our full evaluation process is outlined in our review methodology.
FAQ
How long does a thermostat typically last on a Ram 2500?
Thermostat lifespan varies by use and environment; often they last many years but heavy towing and frequent thermal cycling can shorten service life. Inspect during cooling system maintenance and replace if you notice symptoms or if the thermostat is more than several years old.
Can a bad thermostat cause overheating only when towing?
Yes. Under towing loads the engine produces more heat and the thermostat must regulate higher coolant flow. A thermostat that sticks or opens too late can allow the engine to overheat only under heavy load while appearing normal during light driving.
Is it necessary to replace the thermostat gasket when replacing the thermostat?
Usually yes. Gaskets and O-rings compress and age, and reusing them increases the risk of a thermostat housing seal leak. Replacing the gasket ensures a proper seal and reduces the chance of having to reopen the housing.
How do I test a thermostat without removing it?
A basic in-vehicle check is to observe warm-up behavior and heater performance. More direct tests involve measuring upper radiator hose temperature changes as the engine warms; a sudden rise indicates the thermostat opening. These checks are indicative but not definitive compared with bench testing.
Will a stuck-open thermostat make the engine run cold?
Yes. If the thermostat remains open the engine may take much longer to reach operating temperature or run persistently cool, which can reduce fuel efficiency and cabin heat. This symptom is sometimes described as engine running cold thermostat stuck open.
Should I flush the cooling system when replacing the thermostat?
Flushing is recommended if the coolant is dirty, contaminated, or if the system has not been serviced for a long time. Clean coolant and a flush can remove deposits that might impair thermostat operation and help extend the life of the new unit.
Final Verdict
Prioritize fitment, reliable sealing, and correct thermal characteristics when choosing a replacement thermostat for the 2010-2018 Ram 2500. A thermostat that matches OEM opening temperature and seats properly in the housing will restore normal warm-up behavior and prevent overheating under load. Balance durability and ease of installation: replacing aging gaskets and inspecting the housing and hoses during service reduces the chance of repeat leaks and saves time.When in doubt, favor units that document fitment to the 2010-2018 Ram 2500 and offer robust sealing materials. Proper installation and system bleeding are as important as the part itself for long-term performance, so plan for thorough service when you replace the thermostat.
Explore More:
- Check out all Ram 2500 parts & accessories
- Explore Thermostats Maintenance & Repair Guides
- Explore Cooling System
- Browse all Auto Parts
