Continental 64412 HVAC Heater Hose - Engine To Heater, Heater To Engine or Heater To Pipe-2

Continental HVAC Heater Hose 64412 Overview

Continental 64412 is a molded HVAC heater hose for coolant transfer between the engine, heater core, bypass circuit, and radiator-related passages. It is built to SAE 20R3EC Class D1 and D2 requirements and is resistant to electrochemical degradation, making it a direct-fit service part for select Subaru heating system applications.

This molded hose line from Continental is made for precise routing in tight engine bays, helping maintain the correct hose shape and flow path in heater circuit service. Part number 64412 is a practical OE-style replacement when servicing Subaru Forester, Impreza, and Legacy heater hose connections.

Key Features

• Molded HVAC heater hose for coolant circulation service
• 0.620 in. inside diameter at both ends
• 23.500 in. hose length
• Built to SAE 20R3EC Class D1 and Class D2 specifications
• Resistant to electrochemical degradation (ECR)
• Continental Molded product line for formed hose routing

Fitment Details

• Fits 2000-2002 Subaru Forester, Engine To Heater, Molded
• Fits 1995-2001 Subaru Impreza, Heater To Pipe-2, Molded
• Fits 2000 Subaru Legacy, Heater To Engine, Molded
• Fits 1990-1994 Subaru Legacy, Heater To Pipe-2, Molded

Part number 64412 cross-references Gates 18881 and Dayco 87808 for the same application.

What This Hose Helps Address

• Coolant leaks at a worn or cracked heater hose
• Restricted heater flow caused by hose collapse or deterioration
• Incorrect hose routing after heater circuit repair
• Loss of cabin heat from damaged coolant transfer lines
• Service replacement for aging Subaru heater hose assemblies

Installation Notes

Verify the hose path and connection points before installation so the molded shape matches the original routing. Confirm the 0.620 in. inside diameter and 23.500 in. length against the removed hose, and inspect adjoining clamps, pipes, and heater core fittings for wear or corrosion before reassembly.

Quality Assurance

Continental manufactures this hose to meet SAE 20R3EC Class D1 and D2 standards and to resist electrochemical degradation, which supports long-term coolant system service in heater circuit applications. Part number 64412 is engineered for the listed Subaru fitments and formed for consistent routing in the HVAC hose system.