ContiTech 63964 Molded Heater Hose

The ContiTech 63964 is a premium molded heater hose designed to transfer glycol-based coolants to and from the heater core, bypass to the radiator, and through other components in your vehicle's cooling system. This high-quality replacement hose is engineered to provide reliable performance in demanding underhood environments.

Key Features:

• Meets or exceeds SAE 20R3EC Class D1 and Class D2 specifications
• Resistant to Electrochemical Degradation (ECR) for extended service life
• Constructed from Versigard rubber compound for superior heat, oil, and weather resistance
• Tylanar knit reinforcement provides exceptional strength and durability
• ID range from 1/4-inch to 1-3/8-inch with intersect hose configurations
• Direct replacement for OEM heater and bypass hoses

Continental ContiTech heater hoses are manufactured to original equipment specifications, ensuring proper fit and long-lasting performance. The advanced rubber formulation withstands high underhood temperatures and resists degradation from modern antifreeze coolants, making this hose ideal for vehicles requiring custom-routed cooling system components.