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Replacing a thermostat on your Honda CR-V matters because accurate temperature control keeps the engine efficient and prevents overheating or excess wear. Choosing the right thermostat affects warmup time, heater performance, and long-term cooling system reliability. This guide covers our shortlisted top picks for the Honda CR-V thermostat category and explains the features that matter most. Below we outline the evaluation criteria and practical considerations to help you pick an appropriate replacement that fits and functions correctly.
Looking for other parts? See all Honda CR-V parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | MotoRad Integrated Thermostat Housing Assembly, 170°F |  |
| Most Popular A crowd favorite that many people choose with confidence | Allmotorparts Replacement Engine Thermostat (19301-PAA-306 compatible) |  |
| Best Quality Built to a higher standard if you want something more solid | Honda Genuine Thermostat Cover Assembly 19310-5A2-A02 |  |
| Best Budget The cheapest option that still gets the job done reliably | Techie Engine Thermostat 19301-PAA-306 (82°C opening) |  |
| Most Sold A high-volume bestseller chosen again and again | ROVIKE Engine Thermostat replacement for select Honda and Acura vehicles |  |
| Best Value for Money The sweet spot between price and what you get | SecosAutoparts Coolant Thermostat Housing for Honda CR-V/Civic/Acura RSX |  |
| Best Overall The best all-around choice for most situations | Honda Thermostat Assembly 19301-PAA-306 (Genuine Honda) |  |
1. MotoRad Integrated Thermostat Housing Assembly, 170°F
| Manufacturer | Motorad |
|---|---|
| Model | C97636170 |
| Thermostat Temperature | 170 Degrees |
| OEM Part Numbers Replaced | 19301RAF003, 19301RAF004 |
This MotoRad integrated thermostat housing replaces the factory unit on compatible Honda CR-V and other listed models and combines the thermostat and housing into one assembly for a single replacement step. It installs where the original housing sat and operates as a 170 degree thermostat to regulate engine coolant flow and maintain proper operating temperature. Buyers will appreciate that it is a direct replacement for the OEM part numbers listed, which simplifies fit verification and limits additional parts. Real-world benefits include straightforward installation for someone comfortable working on cooling systems and a factory-like fit and finish that many users report works as intended. Expect routine use to return normal temperature control and resolve overheating or P0128-style codes when the original thermostat is stuck. Be aware the unit is an integrated housing, so a future thermostat-only swap would require replacing the whole assembly, and tight engine bays on some K24-equipped vehicles can make installation fiddly.
Best for: Reliability-focused owners who prioritize restoring factory cooling performance with a direct-fit replacement and want a durable, like-for-like repair.
Less Ideal for: Drivers seeking a simple thermostat-only swap to save parts cost or installers who need an adjustable or performance thermostat.
- Direct replacement for factory part numbers 19301RAF003 and 19301RAF004
- Integrated housing and thermostat reduces parts and simplifies a single replacement
- Built to match OEM fit and function for the listed Honda and Acura models
- 170°F calibration addresses common thermostat-related overheating and cold-running symptoms
- Integrated design means replacing the entire housing if the thermostat fails later
- Installation can be tight on some engines and may require extra disassembly or patience
Verdict A reliable, factory-replacement integrated thermostat housing set to 170°F that restores proper cooling for compatible Honda CR-Vs but requires replacing the whole assembly rather than the thermostat alone.
2. Allmotorparts Replacement Engine Thermostat (19301-PAA-306 compatible)
| Compatible part numbers | 19301-PAA-306, 19301PAA306, 19301-PLC-315 |
|---|---|
| Material | Stainless Steel |
| Manufacturer | Allmotorparts |
| Item model number | 19301-PAA-306 |
This Allmotorparts replacement thermostat replaces Honda part number 19301-PAA-306 and is built to control coolant flow so the engine reaches and holds operating temperature. It installs in the thermostat housing and operates like a factory-style unit, opening at its set temperature to allow coolant into the radiator and closing when the engine is cold. Construction notes and the product page indicate a stainless steel flange and a reinforced spring frame for durability, and users report it fits and seats like the original on compatible Hondas. For a convenience-focused buyer the part is straightforward to swap during routine cooling system maintenance and is a quick way to restore proper temperature regulation on a CR-V. Important limitations: this is an aftermarket, not genuine Honda, thermostat so stamped temperature rating can differ from the OEM part which may lead to a slightly different operating temperature. Confirm vertical jiggle-pin orientation during installation so the air-bleed feature works correctly.
Best for: Convenience-driven owners prioritizing a quick, easy replacement to restore proper cooling on a Honda CR-V during routine maintenance or repair.
Less Ideal for: Buyers who require an exact factory-branded thermostat or need the OEM-specified opening temperature for performance or emissions-critical tuning should consider a genuine Honda part instead.
- Direct replacement for Honda part 19301-PAA-306 and stated to fit CR-V models listed in the compatibility section
- Stainless steel mounting flange and channel-constructed spring frame intended to improve durability and seating
- Reports from owners indicate consistent fit and straightforward installation
- Aftermarket availability simplifies getting a replacement quickly during routine maintenance
- Aftermarket temperature rating may differ from factory parts which can change engine operating temperature slightly
- Not a genuine Honda part which may concern buyers who prefer factory-brand components
Verdict A convenient, durable aftermarket replacement for Honda CR-V thermostats that fits like the original but may open at a different temperature than the factory part.
3. Honda Genuine Thermostat Cover Assembly 19310-5A2-A02
| Brand | Honda |
|---|---|
| Model | CR-V ILX TLX Civic Accord |
| Manufacturer Part Number | 19310-5A2-A02 |
This is the genuine Honda thermostat cover assembly designed to replace the factory piece on compatible Honda engines. It installs where the thermostat housing sits and secures the thermostat and gasket; typical use is a routine cooling-system repair or replacement during a coolant service. Being a factory part, it matches Honda fit and form which reduces fitment headaches and ensures the original mounting points and sealing surfaces are correct. Buyers benefit from a straightforward direct-fit swap with no modification and consistent part finish. Several owners report easy installation on Accord/CR-V engines and reliable fit. Limitations are that it is a single OEM cover piece so you still need the thermostat and proper gasket if not included, and some marketplace listings vary in authenticity which can affect longevity. For performance-focused Honda owners this part restores factory operation but it does not change cooling performance beyond correct function.
Best for: Performance-oriented buyers who prioritize factory-correct replacement parts to maintain reliable cooling system operation and preserve OEM fit on their Honda during maintenance or track-focused upkeep.
Less Ideal for: Shoppers looking to upgrade cooling performance or who want a full thermostat kit including gasket and thermostat should consider a complete kit or performance aftermarket options instead.
- Factory Honda part for exact fit with original mounting points
- Direct-fit replacement simplifies installation with no modification
- Smooth exterior finish consistent with factory appearance
- Widely used on applicable Honda models so repair procedures and tutorials are easy to find
- Part listing may omit thermostat and gasket so additional parts may be required
- Authenticity can vary between sellers which may affect durability
Verdict Choose this genuine Honda cover when you want a factory-correct, direct-fit replacement to restore original cooling system function.
4. Techie Engine Thermostat 19301-PAA-306 (82°C opening)
| Applicable vehicle | Honda CR-V 1997-2001 |
|---|---|
| Opening temperature | 82°C (179.6°F) |
| Model number | 19301-PAA-306 |
| Temperature control type | Manual |
This Techie thermostat is a direct-fit replacement that opens at 82°C (179.6°F) to control coolant flow and keep the engine in its normal operating window. For Honda CR-V 1997–2001 owners, it replaces the factory thermostat and is used the same way as the OEM unit: installed in the coolant housing to allow the engine to warm quickly and prevent overheating. The unit is machined metal with a manual temperature control type and arrives with basic packaging and no extra components. Its practical benefits are straightforward: it restores proper warm-up and heater performance, helps maintain fuel efficiency by letting the engine reach operating temperature, and prevents overheating when functioning correctly. Limitations are its bare-bones presentation—no additional seals or hardware are included—so you should inspect or replace the gasket during installation, and the listing does not provide an extended warranty. Given its budget positioning, quality control appears acceptable based on user feedback but long-term durability versus higher-end replacements is uncertain.
Best for: Budget-conscious owners looking for an affordable, no-frills replacement to restore normal cooling and heater performance on a Honda CR-V 1997–2001.
Less Ideal for: If you want a long-term premium upgrade with extended warranty coverage or a kit that includes seals and hardware, consider higher-end or complete thermostat kits instead.
- Direct-fit compatibility with Honda CR-V 1997–2001 which simplifies installation
- Opens at 82°C to restore normal warm-up and heater performance
- Machined exterior construction for basic durability
- Compact, simple design that replaces the thermostat function without extra electronics
- No additional gasket, seal, or installation hardware included
- Manufacturer information lists manual temperature control only and no stated warranty
Verdict A straightforward, low-cost thermostat that restores proper temperature control on Honda CR-V 1997–2001 but ships without extra seals or warranty coverage.
5. ROVIKE Engine Thermostat replacement for select Honda and Acura vehicles
| Included Components | Engine Thermostat |
|---|---|
| Manufacturer Part Number | 19301-PAA-306 |
| OEM Part Number | 19301-PAA-306, 19301-PLC-315, 19301PAA306, 9301PLC315 |
| Manufacturer | ROVIKE |
This ROVIKE thermostat is a budget-friendly direct replacement designed to restore proper coolant flow and engine warm-up on compatible Honda and Acura engines. It installs in place of factory thermostats that use part numbers like 19301-PAA-306 and 19301-PLC-315, and is intended for routine use when a failed thermostat causes overheating, poor heater performance, or a check-engine/temperature code. The listing emphasizes multi-step inspection before shipping and describes simple, direct-replacement installation for most cars. In practice buyers report the part fits common Honda models such as Civic, Accord, CR-V and others, and it reliably opens and closes to regulate coolant temperature when quality is good. Expect typical limitations of aftermarket replacements: a small number of users received a defective unit or found fitment differences on some model years, and installation can be fiddly on vehicles with limited access. For a risk-averse buyer focusing on a CR-V, confirm the year and part number carefully before ordering and be prepared to compare to a factory-quality unit if exact OEM fit is critical.
Best for: A risk-averse mainstream buyer who wants an affordable, ready-to-install replacement for a Honda cooling system and prioritizes checking part numbers and year compatibility before purchase.
Less Ideal for: Buyers who require guaranteed factory-brand parts or professional shops that prefer OEM-sourced components for warranty or longevity reasons.
- Direct-replacement design that matches several Honda/Acura part numbers
- Appears to fit a wide range of Honda models including CR-V and Civic when correct year is selected
- Multiple inspections claimed before shipping to reduce defective units
- Simple one-piece thermostat that restores engine warm-up and heater performance when working
- Some buyers reported defective units or fitment differences on certain years
- Not a factory-brand thermostat so quality and long-term durability can vary
Verdict A cost-effective direct-replacement thermostat that works for many Honda CR-V model years if you confirm the part number, but expect occasional quality variation compared with factory-brand units.
6. SecosAutoparts Coolant Thermostat Housing for Honda CR-V/Civic/Acura RSX
| Fitment | Honda Civic 2002-2005 2.0L; CR-V 2002-2006 2.4L; Acura RSX 2002-2006 2.0L |
|---|---|
| Manufacturer Part Number | 19320-PNA-003 19301-PNA-003 |
| Item Weight | 1.01 pounds |
This SecosAutoparts thermostat housing is a direct-replacement cooling component intended to rehouse the thermostat and route coolant on compatible 2.0L and 2.4L Honda/Acura engines. It installs in the cooling circuit where the original housing mounts to the engine and is typically used when the factory housing leaks, cracks, or when performing a thermostat service. The listing highlights factory-style fitment for Civic 2002–2005, CR-V 2002–2006, and Acura RSX 2002–2006 and includes manufacturer part numbers for matching. Buyers can expect a cost-effective alternative that has been bench-tested by the seller and is sold with quality checks before shipping. Practical benefits are straightforward: it restores proper coolant routing and supports normal engine temperature control without needing a full OEM assembly. Limitations to note are tighter-than-factory tolerances reported by some installers and a missing O-ring in certain kits, so plan to have the correct seal on hand and allow slightly more effort during installation compared with a factory part.
Best for: Practical optimizers looking to maintain a Honda CR-V affordably and extend service life without paying dealer prices will appreciate this value-focused replacement.
Less Ideal for: Those who prioritize exact factory tolerances or want a guaranteed complete parts kit should consider purchasing from a dealer or a higher-end aftermarket brand.
- Direct-replacement design matching manufacturer part numbers for easy part matching
- Economical option compared with dealer-sourced housings
- Seller reports pre-shipment inspection and bench testing
- Multiple user reports of correct fit and reliable operation
- Some units may omit the required O-ring so a separate seal may be needed
- Installation can be tight and may require extra hands or careful alignment
Verdict A budget-friendly, factory-style thermostat housing that restores cooling system function for older Honda CR-Vs if you plan ahead for the seal and slightly firmer fit during installation.
7. Honda Thermostat Assembly 19301-PAA-306 (Genuine Honda)
| Manufacturer Part Number | 19301-PAA-306 |
|---|---|
| Manufacturer | Honda |
| Specific Uses For Product | Engine Temperature Regulation |
| Material | Metal |
| Country of Origin | Japan |
This is the factory-quality thermostat assembly that replaces a failing or worn thermostat to restore proper engine operating temperature. It installs in the engine's cooling housing and operates the coolant flow so the engine reaches and maintains its designed temperature range, which stabilizes cabin heat, emissions and fuel trim. Because it is a Honda-manufactured part with the original part number, fit and function match the factory unit and many owners report straightforward, trouble-free installation. The thermostat is metal-built and sold as the complete assembly, so you do not need to source additional internal components. The main limitation is that this is a direct replacement part for specific Honda models and does not offer adjustable temperature settings or performance tuning features; installation still requires basic mechanical access and the correct gasket and seal handling. For someone who wants a drop-in, factory-quality fix, this returns the system to OEM behavior without aftermarket uncertainty.
Best for: Balanced, all-round buyers who prioritize reliability and a direct factory replacement to restore proper engine temperature control and maintain vehicle longevity.
Less Ideal for: Drivers looking for aftermarket performance thermostats or adjustable temperature control should consider performance-focused alternatives instead.
- Factory-quality part with the original Honda part number for reliable fit and function
- Restores correct engine operating temperature, improving heating and fuel management
- Metal construction and complete assembly reduce the chance of missing components at installation
- Widely used by owners with consistent real-world performance and easy replacement procedure
- Not adjustable or performance-oriented, it only restores factory-spec temperature control
- Fits specific Honda applications only so correct part number verification is required
Verdict If you want a reliable, factory-match thermostat to return your Honda to proper operating temperature, this genuine Honda assembly is the safe choice.
Choosing the Right Honda CR-V Thermostat: Key Factors to Consider
Fitment and Dimensional Accuracy
Correct fitment is essential because a thermostat must mate precisely with the housing and coolant passages. Even small differences in flange diameter, gasket seating surface, or valve stem length can cause poor sealing or mechanical binding.
When a thermostat does not fit correctly it can lead to leaks, improper valve operation, or interference with the coolant sensor location. Confirming that the replacement matches the OEM mounting footprint and sealing surface reduces installation headaches and the chance of post-install problems.
Valve Opening Temperature
The thermostat s opening temperature determines when coolant flow begins and directly affects engine warmup and idle temperature. A thermostat that opens too early can cause the engine to run cold, reducing heater output and increasing fuel consumption. Conversely, one that opens too late risks prolonged overheating and added thermal stress.
Choose a unit with a specified opening temperature that matches the vehicle s factory specification or the recommended operating range to maintain correct engine thermal management.
Material Construction and Corrosion Resistance
Materials used for the valve, spring, and housing contact surfaces influence longevity in a coolant environment that can include additives and varying pH. Stainless steel components and high-quality brass or nickel plating resist corrosion and sticking, especially in areas with hard water or older coolant.
Better construction also reduces the chance of the thermostat seizing in the closed position or the valve deteriorating over time, which can lead to intermittent overheating or failure.
Seal and Gasket Design
The sealing interface between the thermostat and the housing prevents coolant leaks and preserves correct pressure and flow paths. Compression-style gaskets or molded seals that match the housing contour provide more consistent sealing than generic flat gaskets.
Poor sealing can cause a thermostat housing seal leak, leading to coolant loss and inconsistent temperature readings. Verify gasket type, material compatibility with coolant chemistry, and whether replacement requires any additional sealant.
Ease of Installation and Serviceability
A thermostat that is straightforward to install reduces labor time and the risk of installation errors. Features that help include clear orientation markers, straightforward gasket placement, and design that allows access without removing unrelated components.
Consider whether the thermostat can be serviced without full system disassembly, and whether common tools are sufficient for replacement. Ease of installation also affects whether a DIYer or a technician will be the best option for replacement.
Reliability and Long-Term Performance
Long-term reliability is about consistent thermal response and resistance to mechanical wear. Thermostats that maintain opening temperature over many heat cycles and resist spring fatigue avoid premature oscillation between open and closed states.
Durable units reduce the likelihood of signs of bad thermostat such as intermittent overheating or the engine running cold due to a stuck-open valve, providing a more predictable maintenance schedule.
FAQ
What are common thermostat symptoms overheating in a Honda CR-V?
Common symptoms include a rapidly rising temperature gauge, steam from the cooling system area, or reduced heater performance. You might also notice frequent coolant loss or a warning light. These signs often indicate restricted coolant flow or a thermostat that is not opening at the correct temperature.
How to test a thermostat without specialized tools?
A basic method is to warm the engine while monitoring coolant temperature and watching for consistent warmup. For a more direct check, remove the thermostat and place it in hot water to observe the valve opening at its rated temperature. This approach is simple but requires removal and careful handling to avoid burns.
Can a leaking thermostat housing seal cause overheating?
Yes, a leaking seal can lower coolant levels and compromise pressure, which reduces cooling efficiency and may lead to overheating. Small leaks may be intermittent and cause gradual coolant loss, so inspect seals and gaskets when temperature issues appear.
What happens if the thermostat is stuck open or closed?
A stuck-open thermostat usually causes the engine to run cold, longer warmup times, and weak cabin heat. A stuck-closed thermostat prevents coolant circulation and typically leads to rapid overheating. Both conditions should be addressed promptly to avoid engine damage.
How do I confirm the correct thermostat part number fitment for my CR-V?
Check the vehicle s model year and engine code against manufacturer part catalogs or technical specifications that list opening temperature and physical dimensions. Ensure the listed flange, gasket type, and valve orientation match the vehicle s housing before purchasing.
Is thermostat replacement a good DIY job for a Honda CR-V?
Thermostat replacement is often within the capabilities of a confident DIYer with basic tools and a service manual. The job usually involves draining some coolant, removing the housing, and careful gasket installation. If access is limited or you are unsure about bleeding the cooling system, seek professional help.
How We Chose the Best Honda CR-V Thermostat
We focused on components and parts engineered to match Honda CR-V cooling system requirements and narrowed options by key technical and reliability factors. Primary evaluation criteria included: material and construction quality to resist corrosion and sticking; dimensional fit and flange location to ensure correct installation; valve opening temperature tolerance to maintain proper operating range; compatibility with stock housing and sensor locations for straightforward fitment; and seal design to minimize the risk of housing leaks. We also weighed expected durability under typical highway and city driving cycles and the availability of OEM-equivalent specifications or technical datasheets. Exclusions: we excluded items lacking clear fitment data, parts without manufacturer specifications for opening temperature, and products intended for different vehicles. The final list emphasizes parts that meet dimensional and thermal specifications important for the Honda CR-V cooling system.
Our full evaluation process is outlined in our review methodology.
Conclusion
When selecting a thermostat for a Honda CR-V prioritize correct fitment, the specified opening temperature, and robust construction that resists corrosion. These factors have the biggest impact on warmup behavior, cabin heating, and the risk of overheating or coolant leaks. Balance ease of installation and gasket design against long-term reliability. Addressing those tradeoffs will help you choose a replacement that restores predictable engine temperature control and reduces the need for repeat service.
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