19510-R40-A50 Engine Heater Hose for Accord OLIVER Automotive Accessory Origin Coolant Iron Water Pipe

This heater pipe is a direct replacement for OEM part number 19510-R40-A50 (19510R40A50). Also listed as a heater pipe or by-pass pipe, it is a rigid coolant line that routes engine coolant to the heater core and bypass circuit. Manufactured to OEM specifications, this pipe is designed for Honda vehicles equipped with the 2.4L inline-four engine, ensuring proper fitment and reliable coolant flow. Please note: the O-ring seal (91315-PNA-003) is not included unless otherwise stated; verify your original part before ordering.

• Part Type: Heater Pipe / By-Pass Pipe / Coolant Pipe

• OEM Reference: 19510-R40-A50, 19510R40A50

• Engine Fitment: 2.4L L4 Gas

• Condition: New aftermarket replacement

• Associated Seal: O-ring 91315-PNA-003 (sold separately)

• Direct-fit OEM replacement for straightforward installation

• Rigid metal construction resists coolant, heat, and pressure

• Restores proper coolant routing to the heater core and bypass circuit

• Helps resolve coolant leaks originating from the heater pipe area

• Honda Accord 2008-2010 – 2.4L L4 Gas

• Honda CR-V 2010-2011 – 2.4L L4 Gas

• Honda Odyssey (RB3/RB4) – 2.4L L4 Gas

• Note: Verify engine variant and original part number before ordering.

Q1: What are the symptoms of a failing heater pipe?

A: Common signs include coolant leaks in the engine bay near the firewall or thermostat area, low coolant level, engine overheating, and a sweet coolant smell. Visible rust or corrosion at the pipe connection points is also a frequent indicator.

Q2: Is this a genuine Honda part?

A: This is a high-quality aftermarket replacement manufactured to OEM specifications. The OEM number 19510-R40-A50 is referenced for compatibility identification only.

Q3: Does this pipe come with the O-ring seal?

A: The O-ring (part number 91315-PNA-003) is typically sold separately. Please confirm whether your purchase includes the seal, or reuse the existing O-ring only if it is in good condition.