Gates 23978 Premium Molded Coolant Hose

The Gates 23978 is a premium molded EPDM coolant hose engineered to provide OEM-quality cooling system performance for demanding automotive applications. This pre-shaped hose features a centerline length of 16-11/16 inches (424mm) with 1-5/16 inch (33mm) inside diameter connections on both ends, ensuring precise fitment and reliable coolant flow.

Key Features:

• EPDM rubber construction engineered to resist electrochemical degradation, the leading cause of coolant hose failure
• Factory-molded design ensures proper fit and perfectly sealed connections
• Specifically-engineered materials resist collapse under vacuum conditions
• Temperature range: -40°F to 275°F (-40°C to 135°C) for extreme climate reliability
• Meets SAE 20R3 Type EC Class D-1 and D-2 specifications
• Approved for marine applications
• Can be used for coolant, water, and air applications

Gates molded coolant hoses are manufactured with the same precision and quality standards used for original equipment, saving time and money compared to OEM dealer replacement parts. The advanced EPDM compound resists heat, ozone, and the electrochemical degradation that causes micro-cracks and premature failure in standard hoses. Gates recommends replacing hose clamps each time a new coolant hose is installed for optimal seal integrity.

Important: Not for use in fuel or oil transfer applications.