Gates 51781 Premium Modular Coolant Hose Assembly

The Gates 51781 Premium Modular Coolant Hose is a precision-engineered coolant hose assembly designed to meet or exceed OEM specifications for specific vehicle applications. This modular radiator hose features integrated OE components for a complete, direct-fit replacement solution.

Key Features:

• Manufactured to fit specific applications with OEM-quality specifications
• Includes essential integrated components such as hose branches, quick-connectors, sensors, or restrictors as required
• Engineered with EPDM compounds that resist electrochemical degradation—the leading cause of coolant hose failure
• Specially-engineered materials resist vacuum collapse, eliminating the need for internal springs in many applications
• Heat and ozone resistant EPDM cover with synthetic fiber knit reinforcement
• Temperature range: -40°F to +257°F (-40°C to +125°C)
• Meets SAE 20R3 EC Class D1 standards for hoses under 1" ID and SAE 20R4 EC Class D1 for 1" ID and over

Gates modular coolant hoses provide a professional-grade solution for modern cooling system repairs, delivering reliable performance and long service life. Gates recommends replacing hose clamps each time a new coolant hose is installed for optimal sealing and performance.