Continental 64634 HVAC Heater Hose - Heater Inlet

Continental 64634 HVAC Heater Hose for Civic

Continental Molded HVAC Heater Hose 64634 is built for coolant transfer between the heater core, bypass circuit, radiator, and related engine cooling components. It is a molded hose for 2012-2015 Honda Civic heater inlet applications, with dimensions that support a precise routing path and secure connection points.

Key Features

• Hose 1 inside diameter: 0.690 in.
• Hose 1 length: 28.200 in.
• End 2 hose inside diameter: 0.750 in.
• Meets SAE 20R3EC Class D1 and Class D2 specifications
• Resistant to electrochemical degradation (ECR)
• Designed for glycol-based coolant flow in HVAC and cooling system circuits

Product Details

This Continental molded heater hose is engineered for coolant routing in the HVAC system and related engine cooling passages. The molded shape helps match the factory routing on 2012-2015 Honda Civic heater inlet applications, while the hose dimensions support proper fit at the connection points. Part number 64634 is a direct-reference option for buyers searching for a Honda Civic heater inlet hose, and Continental 64634 is also cross-referenced to Gates 18505 for the same application.

The Continental Molded line focuses on formed hose construction for vehicle-specific routing, helping maintain the intended path between components without unnecessary bends or strain. For shoppers comparing a 2012-2015 Honda Civic heater hose replacement, this part number provides a fitment-specific solution with published dimensional data.

Common Issues This Part Addresses

• Coolant leakage at the heater inlet hose connection
• Cracked or hardened heater hose material
• Restricted coolant flow to the heater core
• Improper hose routing from a previous repair
• Degradation from electrochemical exposure in the cooling system

Installation Notes and Tips

Verify hose routing against the original part before installation on 2012-2015 Honda Civic heater inlet applications. Inspect adjoining clamps, fittings, and coolant passages for wear, corrosion, or residue before reassembly. After installation, refill and bleed the cooling system according to the vehicle service procedure and check for leaks at operating temperature.

Quality Assurance

Continental manufactures this hose to SAE 20R3EC Class D1 and Class D2 specifications and includes resistance to electrochemical degradation for added durability in coolant service. Part number 64634 is built for the specified Honda Civic heater inlet application.