Honda Genuine Thermostat 19301-PAA-306 – Original Japanese Part

The Honda Genuine Thermostat 19301-PAA-306 is an authentic OEM cooling system component, designed and manufactured in Japan to meet the highest factory standards. It precisely controls the flow of coolant, maintaining the optimal operating temperature of the engine and ensuring stable performance and long-term reliability.

Replaces Honda OEM Part Numbers

• 19301-P08-316
• 19300-P08-014
• 19300-PH7-024
• 19300-PH7-014
• 19300-PH7-004

Applications – Honda D, B and F Series Engines

• Honda Accord (1990–2002) – F-series engines
• Honda Civic (1988–2005) – D-series and B-series engines
• Honda Concerto (1990–1995) – D-series
• Honda CR-V (1997–2001)
• Honda FR-V – D-series
• Honda HR-V (1999–2005)
• Honda Integra (1991–2001) – B-series
• Honda Prelude (1992–2001) – F-series
• Honda Stream (2001–2005) – D-series

Product Features

• OEM Number: 19301-PAA-306
• Made in Japan – genuine Honda part
• Type: wax-operated thermostat
• Direct fit – no modification required
• High resistance to corrosion, pressure, and temperature changes

Why Choose a Genuine Honda Thermostat?

• Identical to the factory-installed thermostat used in D-, B-, and F-series engines.
• Ensures stable engine temperature and efficient fuel combustion.
• Durability and precision confirmed by Honda’s OEM quality standards.
• Delivered in original Honda packaging from verified distribution channels.

The Honda Genuine Thermostat 19301-PAA-306 ensures reliable engine temperature control and factory-level cooling performance. It is the perfect choice for maintenance or restoration of classic Honda models such as Civic, Accord, Prelude, or Integra.

Recommended Coolant

When replacing the thermostat, it is strongly recommended to refill the system with Honda Genuine Coolant Type 2 (08CLA-G02-6L1). Using genuine coolant and OEM components guarantees proper thermal control and long-term corrosion protection.

FAQ – Common Questions About Honda Thermostat 19301-PAA-306

Is this the same thermostat used in factory production?

Yes. The 19301-PAA-306 thermostat is a genuine Honda OEM part, made in Japan by an authorized supplier and identical to the component used in factory assembly.

Does it include a gasket?

Yes, the thermostat comes with a factory-fitted sealing gasket compatible with the OEM housing. No additional sealants or silicone are required during installation.

When should the thermostat be replaced?

It is recommended to inspect or replace the thermostat every 60,000–80,000 km or during coolant replacement. Symptoms of wear include slow engine warm-up, unstable temperature readings, or overheating at idle.