Genuine OEM Honda Thermostats

Just like the thermostat in your home, a automobile's thermostat helps maintain a minimum temperature in order to keep the engine coolant at an acceptable temperature. During startup, and normal operation, the cooling system in your Honda is capable of handling the load just fine, and carries on as normal. During extended or hard driving periods or when the weather is hotter out, the cooling system can endure a lot more heat, and can't handle the load, which can cause the coolant temperature to rise significantly. 

The thermostat's job is to open when the coolant temperature reaches a predetermined temperature (typically 195 degrees Fahrenheit). Once the thermostat opens, more coolant is allowed to pass through the engine reducing the coolant temperature to below that level. Once the temperature goes below that threshold, the thermostat closes. Sometimes the thermostat can get stuck either open or closed, which can result in overheating, which can severely damage your Honda's engine. It is recommended to replace the thermostat if the water pump is ever replaced.

When it comes to a thermostat for your Honda, they are not all made the same. Only an Genuine OEM thermostat is designed and manufactured to work specifically for the engine you have, and is guaranteed to fit properly and is backed by Honda's Limited Parts Warranty, meaning you can rest assured once you replace the thermostat, you won't have to worry about it again.

At Honda Parts Unlimited, we only sell Genuine OEM Honda thermostats and do so at or in many times below wholesale prices. Buying form means you are getting the right part at the lowest shipped price, and with our fast shipping, excellent customer service, you'll understand why we are the leader in Honda parts online.

Below are our most popular thermostats. If you don't see the one for your Honda, please contact us and let one of our factory trained parts professionals look that item up fro you!

Thermostat Assembly (Nippon Thermostat)
19301-PAA-306
Other Names: Thermostat Assembly- More
Replaces: 19300-P08-003, 19300-PT0-003, 19300-PT0-004, 19301-P08-000, 19301-P08-305, 19301-P08-306, 19301-P08-315, 19301-P08-316, 19301-P10-307, 19301-PAA-305
Description: Your Honda's engine is subjected to a great amount of heat. As heat is the mortal enemy of your vehicle's engine, your Honda is equipped... More
Notes: For California Emissions. More
$40.35
$30.75
$40.35
$30.75
Thermostat Assembly (Fuji Thompson)
19301-PLC-315
Other Names: Thermostat Assembly- More
Replaces: 19301-PLC-305
Description: A Thermostat works just like the one in your home, and is responsible for maintaining a minimum coolant temperature by opening when the... More
$39.57
$30.15
$39.57
$30.15
Thermostat Assembly (Nippon Thermostat)
19301-PNA-003
Other Names: Thermostat Assembly- More
Description: Just like the thermostat in your house or apartment, your Honda's thermostat helps regulate temperature, but unlike the air temperature,... More
$82.12
$61.09
$82.12
$61.09
Thermostat Assembly (Nippon Thermostat)
19301-PZA-305
Other Names: Thermostat Assembly- More
Replaces: 19301-P07-306, 19301-P07-316, 19301-P07-A00
Description: The Thermostat helps regulate the coolant temperature that circulates throughout your Honda's engine. It is a valve which is filled a... More
$35.48
$27.04
$35.48
$27.04
Thermostat Assembly
19301-P8F-A11
Other Names: Thermostat Assembly- More
Replaces: 19301-P8F-A10
Description: The Thermostat is a small device that aids in cooling your engine. Inside the thermostat is a pin which sits in a wax substance that... More
$53.73
$39.98
$53.73
$39.98
Thermostat Assembly (Nippon Thermostat)
19301-RAA-A02
Other Names: Thermostat Assembly- More
Replaces: 19301-RAA-A01
Description: A Genuine OEM Honda Thermostat is designed specifically for your Honda's engine in order to help regulate the engine's coolant... More
$82.12
$61.09
$82.12
$61.09
Thermostat Assembly (Nippon Thermostat)
19301-RAF-004
Other Names: Thermostat Assembly- More
Replaces: 19301-RAF-003
Description: The Thermostat is a valve that when opens, helps increase the cooling efficiency of the entire cooling system by allowing additional... More
$82.12
$61.09
$82.12
$61.09
Thermostat Assembly (Nippon Thermostat)
19301-REA-305
Other Names: Thermostat Assembly- More
Description: A thermostat helps is maximizing the efficiency of your cooling system by limiting the coolant that enters the system only until its... More
$49.92
$38.04
$49.92
$38.04
Thermostat Assembly (Fuji Seiko)
19301-RNA-315
Other Names: Thermostat Assembly- More
Replaces: 19301-RNA-305, 19301-RNA-306
$51.60
$38.39
$51.60
$38.39
Thermostat Assembly (Nippon Thermostat)
19301-P8C-A11
Other Names: Thermostat Assembly- More
Replaces: 19301-P8C-A10
Description: The Thermostat is a device that helps the cooling system maintain a maximum temperature. Just like the thermostat in your home does... More
$54.27
$40.37
$54.27
$40.37
Thermostat Assembly (Nippon Thermostat)
19301-P8E-A10
Other Names: Thermostat Assembly- More
Replaces: 19301-PR7-305, 19301-PR7-306, 19301-PR7-307
Description: Just like the thermostat does in your home, your Honda's Thermostat helps maintain a maximum temperature for the engine's coolant by... More
$64.33
$47.86
$64.33
$47.86
Thermostat Assembly (Fuji Thompson)
19301-P13-305
Other Names: Thermostat Assembly- More
Replaces: 19301-P13-000, 19301-P13-010, 19301-P13-306
$43.27
$32.97
$43.27
$32.97
Thermostat Assembly
19301-RMX-306
Other Names: Thermostat Assembly- More
$49.92
$38.04
$49.92
$38.04
Thermostat Assembly
19301-RMX-307
Other Names: Thermostat Assembly- More
Replaces: 19301-RME-305
$49.53
$37.74
$49.53
$37.74
Thermostat Assembly (Nippon Thermostat)
19301-R40-A02
Other Names: Thermostat Assembly- More
$69.10
$51.41
$69.10
$51.41

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