Dayco 86836 HVAC Heater Hose - Coolant Reservoir or Radiator To Engine

Overview of Dayco Small I.D. Heater Hose 86836

The Dayco Small I.D. Heater Hose 86836 is designed for reliable HVAC system performance in select Cadillac, Chevrolet, GMC, Saab, and Toyota vehicles. Engineered with durable EPDM material, this 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
• Black color for standard OEM appearance
• Single inside diameter hose with 1/4 inch and 9/32 inch ends
• Outside diameter of 17/32 inch on both ends for secure fit
• Meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• Trunk height of 29 1/2 inches for proper routing

Dayco Small I.D. Heater Hose Product Line Details

The Small I.D. Heater Hose line by Dayco focuses on providing precise fitment and durability for HVAC applications requiring smaller inside diameter hoses. This product line is engineered to meet stringent SAE standards, ensuring compatibility and performance in heating systems of various vehicle makes and models. The 86836 hose exemplifies this line’s commitment to quality materials and exact dimensions for dependable service.

Detailed Product Description

This HVAC heater hose features a single inside diameter design with differing end sizes—1/4 inch on one end and 9/32 inch on the other—allowing for versatile connection options within the heating system. The EPDM construction offers resistance to heat, ozone, and coolant chemicals, which helps maintain hose integrity over time. Both ends have an outside diameter of 17/32 inch, facilitating a secure seal with clamps or fittings. The hose length, with a trunk height of 29 1/2 inches, supports proper installation and routing in compatible vehicles.

Compatible Vehicles and Applications

• Cadillac Escalade, Escalade ESV, Escalade EXT
• Chevrolet Avalanche, Avalanche 1500, Silverado 1500, Silverado 2500, Silverado 3500, Suburban 1500, Suburban 2500, Tahoe, Trailblazer, Express 1500/2500/3500
• GMC Sierra 1500/2500/3500 (including Classic and HD variants), Yukon, Yukon XL 1500/2500, Envoy, Savana 1500/2500/3500
• Saab 9-7x
• Toyota Yaris

Common Issues Addressed by Dayco Heater Hose 86836

• Replacement of cracked or leaking heater hoses causing coolant loss
• Resolving heater core flow restrictions due to deteriorated hose material
• Preventing overheating issues related to faulty HVAC coolant circulation
• Eliminating coolant odors inside the vehicle from hose leaks
• Maintaining proper heater system pressure and temperature control

Installation Notes and Tips

Ensure the vehicle is cool and the cooling system is depressurized before removing the old heater hose. Verify the hose ends match the specified inside diameters (1/4 inch and 9/32 inch) for proper fit. Use appropriate clamps to secure the hose ends and check for leaks after installation. Routing should follow OEM guidelines to avoid kinks or contact with hot engine components, as this hose does not include a heat shield or protective sleeve.

Quality Assurance and Warranty

Dayco Small I.D. Heater Hose 86836 complies with SAE J20R3 Class D-1 and SAE J1684 Type EC standards, ensuring material and dimensional quality for HVAC applications. Manufactured with EPDM rubber, this hose offers resistance to heat and coolant chemicals for extended service life. Warranty coverage details should be confirmed with the original equipment manufacturer or supplier.