Gates 12220 Molded HVAC Heater Hose

The Gates 12220 is a premium molded HVAC heater hose engineered for reliable performance in automotive cooling and heating systems. This pre-formed hose is precision-manufactured to exact OEM specifications, providing a direct-fit replacement that simplifies installation and ensures proper routing.

Key Features:

• Molded design for precise fit and proper routing in tight engine compartments
• EPDM rubber construction resists coolant, non-oil based additives, and electrochemical degradation
• Engineered to withstand high cooling system pressures and temperature extremes
• Meets or exceeds SAE 20R3 industry standards for heater hose applications
• Superior resistance to cracking, hardening, and softening over extended service life
• Direct OEM replacement for simplified installation

Gates heater hoses are manufactured with premium EPDM rubber compounds that provide excellent resistance to coolant chemicals and thermal cycling. The molded construction eliminates the need for multiple bends and connections, reducing potential leak points while ensuring optimal coolant flow between the engine and heater core. Gates recommends replacing hose clamps each time a new coolant hose is installed for maximum system integrity.