Gates 25663 Molded Coolant Hose

The Gates 25663 is a precision-molded coolant hose engineered to deliver OEM-quality performance in radiator, heater, bypass, and other cooling system applications. Designed as a direct-fit replacement, this hose eliminates the need for dealer sourcing and installs with confidence.

Key Features:

• EPDM construction — tube, synthetic fiber knit reinforcement, and heat- and ozone-resistant EPDM cover for long-lasting durability
• Electrochemical degradation (ECD) resistance — engineered to combat the leading cause of coolant hose failure
• Vacuum collapse resistance — specially engineered materials help eliminate the need for internal support springs in many applications
• Pre-shaped molded fit — factory-contoured to ensure a perfectly sealed, leak-free installation
• Meets SAE 20R4 EC Class D1 standards for reliability and performance
• Temperature rated from -40°F to +257°F (-40°C to +125°C)
• Marine approved — suitable for marine cooling system applications
• Not intended for fuel or oil transfer applications

Gates molded coolant hoses represent one of the most comprehensive replacement hose lines on the market. When installing a new hose, Gates recommends replacing hose clamps at the same time to ensure a complete, reliable seal.