Dayco 88474 HVAC Heater Hose - Heater To Intake Manifold or Intake Manifold To Heater

Overview of Dayco Small I.D. Heater Hose 88474

The Dayco Small I.D. Heater Hose 88474 is designed specifically for HVAC systems in select Audi and Volkswagen models. Engineered with durable EPDM material, this black single inside diameter hose ensures reliable performance in heating applications for vehicles like the Audi A4, A4 Quattro, and Volkswagen Passat.

• Constructed from high-quality EPDM for heat and ozone resistance
• Black color for standard OEM appearance
• 3/4 inch inside diameter on both ends for consistent fit
• Outside diameter of 1 3/32 inches on both ends
• Meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• Single inside diameter hose type for precise HVAC system compatibility
• Trunk height dimension of 14 inches

Detailed Product Description

The Dayco Small I.D. Heater Hose 88474 is part of the Small I.D. Heater Hose product line, which focuses on delivering precise fit and reliable durability for heating and cooling system applications. This hose is manufactured from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and weathering, making it suitable for the demanding environment of automotive HVAC systems. The hose features a consistent 3/4 inch inside diameter on both ends, ensuring a secure connection within the heating system of compatible vehicles.

Designed without a heat shield or protective sleeve, this hose is intended for applications where additional external protection is not required. The compliance with SAE J20R3 Class D-1 and SAE J1684 Type EC standards confirms its suitability for automotive heater hose applications, providing assurance of quality and performance.

Compatible Vehicles and Applications

• Compatible with Audi A4 and A4 Quattro models
• Compatible with Volkswagen Passat models
• Used in HVAC heater systems to transport coolant for cabin heating
• Replaces worn or damaged heater hoses to restore proper heating function
• Helps prevent coolant leaks and overheating issues related to HVAC hoses

Installation Notes and Tips

• Ensure the hose diameter matches the OEM specifications for your vehicle
• Inspect hose connections and clamps for wear before installation
• Replace any damaged clamps to maintain a secure seal
• Verify proper routing to avoid kinks or contact with hot engine components
• Flush the cooling system if necessary before installing the new hose

Quality Assurance and Warranty

Dayco manufactures the Small I.D. Heater Hose 88474 to meet stringent SAE specifications, ensuring consistent quality and durability. While specific warranty details are not provided, Dayco products typically adhere to industry standards for reliability in automotive HVAC applications. Using this hose helps maintain the integrity of your vehicle’s heating system and supports long-term performance.