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    Moulded Coolant Hose

    Our moulded coolant hoses are manufactured to fit upper, lower, bypass, heater and other coolant applications with OEM-quality specifications, saving you time, costs and energy from going to your OE dealer for radiator hose replacements. Approved for Marine applications. Gates' curved hose line is the most comprehensive line on the replacement market.

    • Engineered to resist electrochemical degradation, the leading cause of hose failure.
    • Pre-shaped to fit and to ensure perfectly sealed conditions.
    • Aramid or rayon knit reinforcement (depending on the application).

    All Parts

    Part # Product # Description Maximum Working Pressure (psi) Maximum Working Pressure (bar) Inside Diameter (in) Inside Diameter (mm) Outside Diameter (in) Outside Diameter (mm)


    When creating our FleetRunner® Coolant Hose, we wanted to tackle the leading cause of hose failure: electrochemical degradation or ECD. This occurs when the hose, liquid coolant, and engine/radiator fittings form a galvanic cell or "battery," creating a chemical reaction that allows micro-cracks to form in the hose tube. Coolant seeps into these cracks or striations and breaks down the reinforcement, leading to hose failure and, ultimately, roadside breakdowns. We worked to engineer our EPDM coolant hose material compound with superior electrochemical resistance, so your Gates® coolant hoses will last longer and keep your engine systems running stronger.

    Features and Benefits

    • EPDM tube, synthetic fibre knit reinforcement, heat- and ozone-resistant EPDM cover.
    • Specifically engineered materials resist vacuum collapse to reduce the need for internal springs in many applications.
    • Meets requirements of SAE 20R4 EC Class D1.
    • Resistant to heat, ozone and chemical coolants.
    • Temperature Range: -40°C to +135°C (-40°F to +275°F).
    • Custom shapes available with minimum order quantity and setup charge.
    • Note: Gates recommends replacing hose clamps each time a new coolant hose is installed.


    For a secure fit to virtually every vehicle on the road today, Gates® precision-manufactures our moulded engine hoses with exclusively-developed factory processes to ensure compatibility and exceptional performance to specific vehicle manufacturer specifications.

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