Dayco 71840 Molded Curved Radiator Hose Upper

The Dayco 71840 is a premium molded curved radiator hose designed as an OE-replacement upper radiator hose. This high-quality hose features all-synthetic EPDM rubber construction with knitted rayon reinforcement, delivering exceptional durability and performance for cooling system applications.

Key Features:

• 18-inch length curved radiator hose with 1.5-inch inside diameter on both ends
• All-synthetic EPDM rubber construction for superior resistance to oil, mud, salt, road debris, and ozone
• Knitted rayon reinforcement in the inner base tube provides maximum burst strength and collapse resistance
• Temperature range: -40°F to +257°F (-40°C to +125°C)
• Meets SAE J20R4 Class D-1 requirements and SAE J1684 Type EC electrochemical specifications
• Includes protective sleeve to prevent abrasion and extend service life
• Black EPDM construction for professional appearance

This molded radiator hose is engineered to provide an exact OE fitment with no cutting or modifications required. The electrochemical-resistant design prevents inner tube deterioration caused by static electric charge buildup in modern cooling systems. Cross-references include Ford F6DE-8B274-DB and F6DZ-8260-A, Gates 22242, ACDelco 24346L, and Motorcraft KM3026.