ContiTech 63999 Molded Heater Hose

The ContiTech 63999 Elite Molded Heater Hose is engineered to transfer glycol-based coolants to and from the heater core and through other components in your vehicle's cooling system. This precision-molded hose features original equipment configurations to ensure proper fit and reliable performance.

Key Features:

• EPDM tube and cover with synthetic knit reinforcement for superior durability
• Resistant to Electrochemical Degradation (ECR) for extended service life
• Compatible with ethylene glycol, propylene glycol, and organic acid modified long-life coolants
• Temperature range: -40°F to 275°F (-40°C to 135°C)
• Meets or exceeds SAE 20R3EC Class D1 and Class D2 specifications
• Superior resistance to heat, ozone, and chemical coolants

This molded heater hose is specifically designed to withstand high underhood temperatures and antifreeze coolants while maintaining flexibility and form. Not for use in fuel or oil transfer applications.