Dayco 70847 Curved Upper Radiator Coolant Hose

The Dayco 70847 is a precision-molded curved upper radiator hose engineered to deliver reliable coolant flow in demanding automotive applications. This factory-molded, OE-style hose is designed to fit modern, tighter-fitting engine compartments with exact OEM dimensions and routing for straightforward installation.

Premium EPDM Construction:

• Synthetic EPDM rubber material provides exceptional durability and longevity
• Knitted polyester reinforcement delivers high burst strength and prevents splitting, ballooning, and elongation
• Engineered to meet SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• ECD (Electro Chemical Degradation) resistant design prevents inner tube deterioration from static electric charges

Superior Environmental Resistance:

• Withstands temperature extremes from -40°F to +257°F (-40°C to +125°C)
• Resists heat, ozone, and harsh environmental elements
• Compatible with all common coolants and coolant additives
• Heat and ozone resistant cover extends service life

This curved radiator hose is positioned in the upper location and serves as a direct replacement for multiple OEM part numbers including BMW 11531264141, BMW 11531266468, Toyota 16571-16140, and many others. The molded design maintains proper coolant circulation while resisting vacuum collapse, reducing the need for internal springs in many applications.

Note: Not suitable for fuel or oil transfer applications. Dayco recommends replacing hose clamps each time a new coolant hose is installed for optimal sealing performance.