By Pass Hose by DAYCO - 80319

Top-quality Dayco Insulone Heater Hose distributes heated coolant to the heater core with less heat loss. Designed for use in cold climates where adequate heat transfer is crucial for the vehicle to run comfortably and economically. This hose has exceptional burst strength, heat resistance, and compatibility with all typical coolants and coolant additives, thanks to the synthetic EPDM rubber compounds and spiral reinforcement. A unique substance utilised in the insulating layer provides an additional layer of protection against heat loss. This hose, which is constructed with a black cover and has a temperature range of -40°F (-40°C) to +257°F (+125°C), is comparable to SAE 20R3, Class D-2.

• Dayco Insulone Heater Hose supplies heated coolant to the heater core with the least heat loss, which is ensured by a special substance in the insulating layer
• Designed for use in applications requiring cold climates
• Constructed with a dark cover
• Spiral reinforcement and synthetic EPDM rubber compounds for excellent durability
• Able to withstand temperature changes of -40 °F to +257 °F
• All common coolants and coolant additives are compatible with each other