ContiTech 64377 Molded Heater Hose SAE Class - 20R3 D1 D2

The ContiTech 64377 is a premium molded heater hose engineered for automotive HVAC applications requiring superior resistance to antifreeze coolants and extreme underhood temperatures. This molded heater hose meets SAE 20R3EC Class D1 and D2 specifications, ensuring reliable performance in demanding heating and cooling systems.

Key Features:

• EPDM rubber construction provides superior resistance to heat, ozone, and chemical coolants
• Reinforced with 2-spiral synthetic for greater strength and durability
• Custom-molded design ensures precise fit and simplified installation
• Resistant to electrochemical degradation (ECR) for extended service life
• Temperature range: -40°F to 257°F (-40°C to 125°C)
• Kink-resistant construction maintains consistent coolant flow

ContiTech heater hoses are precision-engineered to transfer glycol-based coolants between the heater core, radiator bypass, and other critical cooling system components. The molded configuration eliminates the need for multiple straight hoses and adapters, reducing potential leak points while ensuring proper routing. Cross-reference numbers include 26612X, 15792820, and 23385.