Dayco 88503 Molded Heater Hose

The Dayco 88503 Molded Heater Hose is engineered to provide a precise OEM replacement for your vehicle's coolant system. This pre-formed hose is designed to carry heated coolant from the engine block to the heater core and return it back to the engine, ensuring reliable climate control performance.

Key Features:

• Molded construction with precise bends and routing for exact OEM fitment
• EPDM rubber construction with knitted reinforcement for high burst strength
• Temperature resistance from -40°F to +257°F (-40°C to +125°C)
• Meets SAE J20R4, Class D-1 specifications for quality assurance
• Engineered to meet Type EC electrochemical requirements per SAE J1684
• Resistant to coolants, coolant additives, and environmental elements

Dayco molded heater hoses are manufactured with the same bends and contours as the original equipment, eliminating the need for modification during installation. The durable EPDM compound provides long-lasting performance and excellent resistance to ozone, heat, and modern coolant formulations.