Dayco Flexible Radiator Hose 51mm ID x 457mm EPDM – 81441

Product Overview

The Dayco Flex Radiator Hose 81441 is a flexible cooling system hose designed as an alternative to molded curved radiator hoses. It is precision-molded in a standard length and suitable for replacing straight or molded radiator hoses where flexibility and durability are required.

Key Features

• Flexible design to replace straight or molded radiator hoses.
• Knitted reinforcement and synthetic EPDM rubber construction.
• Meets SAE J20R4, Class D-2 performance requirements.
• Resists splitting, ballooning and elongation under pressure.
• Excellent resistance to ozone and environmental elements.
• Compatible with standard engine coolants.
• Temperature range: -40°F (-40°C) to +257°F (+125°C).
• Corrugated profile for enhanced flexibility without collapse.
• Internal helical steel coil spring prevents flattening under vacuum.

Dimensions & Specifications

• Inside diameter: 51 mm.
• Length: 0.457 m (457 mm).
• Part number: 81441.
• Material: Synthetic EPDM with knitted reinforcement.
• Internal support: Helical steel coil spring.
• Application: Engine cooling system radiator hose replacement.

Application Notes

• Designed as an emergency or service replacement for curved radiator hoses.
• Suitable for use in engine cooling circuits where a 51 mm ID flexible hose is required.
• Not vehicle-specific; always check dimensions and routing before installation.
• Not suitable for fuel, oil, or other hydrocarbon transfer.