Genuine Honda Water Pipe O-Ring OEM 91314-PR7-A00

Genuine Honda Water Pipe O-Ring OEM 91314-PR7-A00

The Genuine Honda water pipe O-ring OEM 91314-PR7-A00 is a factory rubber seal used in the engine cooling system of various Honda and Acura models. This O-ring seals the coolant water pipe connection between the water pump and the thermostat housing, preventing coolant leaks and ensuring proper system pressure.

Although small in size, this O-ring plays a critical role in maintaining cooling system integrity. A worn or hardened seal in this location can lead to coolant loss, air entering the system, and in severe cases engine overheating.

Technical specifications

• Honda OEM part number: 91314-PR7-A00
• Type: coolant water pipe O-ring
• Dimensions: 37.2 × 4.25 mm
• Material: heat- and coolant-resistant rubber
• Origin: genuine Honda part

Application

Used in selected Honda and Acura models, including:

• Honda Accord Coupe 2013–2017
• Honda Accord Sedan 1993–2002 (EU), 2013–2020 (USA)
• Honda Civic Type R 2015–2025
• Honda CR-V 2015–2020 (USA)
• Honda NSX 1991–2005
• Honda Odyssey 2015–2021
• Honda Prelude 1992–2001 – H22A engines*
• Acura RDX 2019–2024
• Acura TLX 2015–2024

*Exact application depends on engine version and market specification.

Why choose a genuine Honda O-ring?

• precise fit for the factory water pipe and housing
• resistance to high temperatures and cooling system pressure
• prevents leaks commonly caused by aftermarket seals
• long service life and material stability

FAQ – frequently asked questions

Should the O-ring be replaced when removing the water pipe?
Yes. Cooling system O-rings are considered one-time-use seals. Reinstalling an old O-ring often results in coolant leakage.

Does this O-ring fit all engines listed above?
Not always. Fitment depends on engine type and market version. VIN verification is recommended.

Is this an original Honda part?
Yes. This is a genuine Honda OEM component supplied through official distribution channels.

If you are unsure about compatibility, please contact us with your vehicle VIN number – we will confirm the correct part for your car.