Dayco 88510 HVAC Heater Hose - Heater Inlet

Overview of Dayco Small I.D. Heater Hose 88510

The Dayco Small I.D. Heater Hose 88510 is designed specifically for Audi A4 and A4 Quattro models, providing reliable HVAC system performance. Constructed from durable EPDM material, this hose ensures consistent heat transfer and resistance to automotive fluids.

• Material: EPDM for heat and chemical resistance
• Color: Black
• Inside Diameter: 3/4 inch on both ends
• Outside Diameter: 1 1/16 inch on both ends
• Hose Type: Single I.D. hose
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk Height: 13 1/2 inches
• Compatible with Audi A4 and A4 Quattro models

About the Small I.D. Heater Hose Product Line

The Dayco Small I.D. Heater Hose product line focuses on delivering precise fitment and reliable performance for HVAC systems requiring smaller inside diameter hoses. This line is engineered to meet strict SAE specifications, ensuring durability and compatibility with specific vehicle models such as the Audi A4 and A4 Quattro. The 88510 part number is a representative example, offering a single I.D. hose solution without additional heat shields or protective sleeves.

Detailed Product Description

This HVAC heater hose is manufactured from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and automotive fluids, making it suitable for the demanding environment of a vehicle’s heating system. Both ends of the hose have a consistent 3/4 inch inside diameter and 1 1/16 inch outside diameter, ensuring a secure and leak-free connection. The hose complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, which define performance requirements for coolant and heater hoses in automotive applications. The black color provides a standard appearance compatible with most engine compartments.

Common Applications and Issues Addressed

• Replacement of worn or cracked heater hoses in Audi A4 and A4 Quattro HVAC systems
• Resolving coolant leaks that cause insufficient cabin heating
• Preventing hose failure due to heat and chemical degradation
• Maintaining proper coolant flow within the heater core circuit
• Ensuring compliance with OEM specifications for HVAC hose replacement

Installation Notes and Tips

When installing the Dayco Small I.D. Heater Hose 88510, ensure the hose is routed without kinks or sharp bends to maintain proper coolant flow. Verify that the hose clamps are securely tightened to prevent leaks but avoid overtightening, which can damage the hose. It is recommended to inspect adjacent components for wear or damage during replacement. This hose does not include a heat shield or protective sleeve, so take care to avoid contact with high-temperature engine parts.

Quality Assurance and Warranty

Dayco manufactures the Small I.D. Heater Hose 88510 to meet SAE standards, ensuring consistent quality and performance. While specific warranty details are not provided, Dayco products typically adhere to industry quality controls and are designed for durability in automotive HVAC applications.