Dayco 86103 HVAC Heater Hose - Heater To Engine

Overview of Dayco Small I.D. Heater Hose 86103

The Dayco Small I.D. Heater Hose 86103 is designed for reliable HVAC system performance in select Buick, Oldsmobile, and Pontiac vehicles. Engineered with durable EPDM material, this branched heater hose supports efficient coolant flow and temperature regulation in your vehicle's heating system.

• Constructed from high-quality EPDM for heat and chemical resistance
• Branched hose design with multiple inside diameters for precise fitment
• Complies with SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• Compatible with Buick Achieva, Oldsmobile Cutlass, and Pontiac Grand Am and Skylark models
• Black color for standard OEM appearance

Detailed Product Description

The Dayco Small I.D. Heater Hose 86103 is a branched HVAC heater hose made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and automotive fluids. This hose features multiple inside diameters—3/4 inch on three ends and 19/32 inch on the fourth—allowing it to connect various points within the heating system efficiently. The hose does not include a heat shield or protective sleeve, which is typical for this type of HVAC component. With a trunk height of 17 inches, it is designed to fit specific routing requirements in the heating system of compatible vehicles.

The Small I.D. Heater Hose product line from Dayco focuses on delivering precise fitment and durability for smaller diameter heater hoses used in automotive HVAC systems. This line ensures that replacement hoses meet or exceed OEM specifications, providing reliable service life and maintaining proper coolant flow for effective cabin heating.

Compatible Vehicles and Applications

• Buick Achieva HVAC heater hose replacement
• Oldsmobile Cutlass and related models requiring branched heater hoses
• Pontiac Grand Am and Skylark heater hose repair or maintenance
• Replacement for HVAC systems needing SAE J20R3 Class D-1 compliant hoses
• Suitable for vehicles requiring branched hoses with multiple inside diameters

Installation Notes and Tips

• Verify hose routing and inside diameters before installation to ensure proper fit
• Inspect all connection points for corrosion or damage prior to hose replacement
• Use appropriate clamps to secure hose ends and prevent leaks
• Ensure coolant system is depressurized and cooled before removing old hose
• Check for any signs of wear or damage in adjacent HVAC components during installation

Quality Assurance and Warranty

Dayco manufactures the Small I.D. Heater Hose 86103 to meet SAE J20R3 Class D-1 and SAE J1684 Type EC standards, ensuring compliance with industry requirements for heater hoses. The EPDM material provides resistance to heat and automotive fluids, contributing to long service life. Warranty coverage details should be confirmed with the original equipment manufacturer or supplier, as Dayco typically supports its products with limited warranties against defects in material and workmanship.