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    Firewall® Heater Hose

    Firewall® Heater Hose is an extra heavy-duty hose designed for maximum durability. It is unaffected by high cooling system pressures, most coolants and non-oil based coolant additives. Caution: Do not use for fuel or oil transfer applications.

    • Good resistance to high temperatures for extended periods of time.
    • Easily recognized by its red cover.
    • Similar to SAE 20R3 Class D-2.
    • Temperature Range: -40°C to +125°C (-40°F to +257°F).

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

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