Honda - Reserve Tank Joint / Coolant Overflow Hose Connector | Genuine Honda 19106-PA0-020

Replace brittle or broken coolant fittings with this genuine Honda Reserve Tank Joint (19106-PA0-020). This OEM hose connector joins the coolant overflow hose between the radiator and the coolant reservoir, allowing coolant to flow properly during thermal expansion and recovery.

Over time, plastic coolant fittings can become brittle from repeated heat cycles, leading to coolant leaks or poor cooling system performance. Replacing the connector with a genuine Honda part restores a secure, factory-quality connection. 

The Reserve Tank Joint helps:

• Connect the coolant overflow hose
• Maintain proper coolant flow between the radiator and overflow reservoir
• Prevent coolant leaks
• Ensure proper coolant expansion and recovery
• Support reliable cooling system operation

Features

• Genuine OEM Honda part
• Honda Part Number: 19106-PA0-020
• Direct factory replacement
• Durable OEM plastic construction
• Resistant to coolant and engine heat
• OEM fit with no modifications required

Package Includes

• One (1) Genuine Honda Reserve Tank Joint / Hose Connector

This connector is found on many Honda and Acura models, including:

• Honda Accord
• Honda Civic
• Honda CR-V
• Honda Odyssey
• Honda Pilot
• Honda Prelude
• Honda del Sol
• Acura Integra
• Acura TL
• Acura TSX
• Acura MDX

Honda has used this connector across numerous cooling-system designs from approximately 1988–2014, making it a common replacement item during cooling system repairs. 

Common Symptoms of a Failed Connector

A damaged or deteriorated reserve tank joint may cause:

• Coolant leaks around the overflow hose
• Cracked or broken plastic connector
• Air entering the cooling system
• Low coolant level
• Overflow reservoir not functioning correctly
• Cooling system pressure loss