Gates 23909 Molded Coolant Hose

The Gates 23909 is a premium molded coolant hose engineered to provide OEM-quality performance for cooling system applications. This pre-shaped curved hose is precision-manufactured to ensure a perfect fit and proper sealed connections in upper, lower, bypass, heater, and other coolant routing applications.

Key Features:

• EPDM tube construction with synthetic fiber knit reinforcement for superior durability
• Engineered to resist electrochemical degradation (ECD), the leading cause of coolant hose failure
• Heat and ozone-resistant EPDM cover withstands harsh engine environments
• Specifically designed materials resist vacuum collapse, reducing the need for internal springs
• Wide temperature range: -40°F to +275°F (-40°C to +135°C)
• Meets SAE 20R4 EC Class D1 specifications
• Approved for marine applications
• Pre-shaped for easy installation and perfectly sealed conditions

Gates molded coolant hoses are factory-molded to exact manufacturer specifications, providing reliable replacement for worn or damaged cooling system hoses. The advanced EPDM compound resists heat, ozone, and chemical coolants while preventing the electrochemical degradation that causes micro-cracks and premature hose failure. Not intended for fuel or oil transfer applications. Gates recommends replacing hose clamps each time a new coolant hose is installed.