Gates 51348 Premium Molded Coolant Hose

The Gates 51348 Premium Molded Coolant Hose is a factory-molded replacement hose engineered to deliver OEM-quality performance for upper, lower, bypass, heater, and other coolant system applications. Pre-shaped for a precise fit, this hose is specifically designed to resist electrochemical degradation (ECD), the leading cause of coolant hose failure.

Key Features:

• EPDM tube construction with synthetic fiber knit reinforcement and heat- and ozone-resistant EPDM cover
• Engineered materials resist vacuum collapse, reducing the need for internal springs in many applications
• Temperature rating: -40°F to 275°F (-40°C to 135°C) for reliable performance in extreme conditions
• Meets SAE 20R4 and 20R3 Type EC Class D-1 and D-2 specifications
• Approved for marine applications
• Pre-shaped design ensures perfectly sealed conditions and proper fit

Gates coolant hoses are precision-manufactured using exclusive factory processes to resist electrochemical degradation, which occurs when the hose, coolant, and engine fittings create a chemical reaction that forms micro-cracks in the hose tube. This advanced engineering extends service life and helps prevent roadside breakdowns. Gates recommends replacing hose clamps each time a new coolant hose is installed for optimal performance.