Dayco 87965 HVAC Heater Hose - Heater Inlet

Reliable HVAC Heater Hose for Subaru Vehicles

The Dayco Small I.D. Heater Hose 87965 is designed to provide dependable performance for your Subaru Forester, Impreza, WRX, and WRX STI. Engineered with durable EPDM material and a protective sleeve, this hose ensures efficient heating system operation under demanding conditions.

• Constructed from high-quality EPDM for heat and chemical resistance
• Black color with a single inside diameter of 5/8 inch on both ends
• Includes a protective sleeve for added durability
• Meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• End outside diameter measures 1 1/32 inch for secure fitment
• Trunk height of 14 inches suitable for specific Subaru models

About the Dayco Small I.D. Heater Hose Product Line

The Small I.D. Heater Hose line by Dayco focuses on delivering precise fit and reliable performance for HVAC systems requiring smaller inside diameter hoses. This product line emphasizes material quality and compliance with SAE standards, making it suitable for vehicles like the Subaru Forester, Impreza, WRX, and WRX STI that demand consistent heater hose durability and heat resistance.

Detailed Product Description

The Dayco 87965 heater hose is a single inside diameter hose constructed from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and automotive fluids. Both ends of the hose have an inside diameter of 5/8 inch and an outside diameter of 1 1/32 inch, ensuring a precise and secure connection within the HVAC system. The hose includes a protective sleeve to guard against abrasion and premature wear, although it does not contain a heat shield. It complies with SAE J20R3 Class D-1 and SAE J1684 Type EC standards, confirming its suitability for automotive heating applications. With a trunk height of 14 inches, this hose is designed specifically for select Subaru models, providing a reliable replacement part for maintaining proper heater function.

Common Applications and Issues Addressed

• Replacement of worn or cracked heater hoses in Subaru Forester, Impreza, WRX, and WRX STI
• Prevention of coolant leaks that can cause HVAC system inefficiency
• Restoration of proper heater core flow to maintain cabin heating performance
• Mitigation of hose degradation due to heat and chemical exposure
• Ensuring secure hose connections to avoid coolant loss and overheating

Installation Notes and Tips

When installing the Dayco Small I.D. Heater Hose 87965, ensure the hose is routed correctly to avoid kinks or sharp bends that could restrict coolant flow. Verify that the inside diameter matches the vehicle’s heater core and fitting connections. Use appropriate clamps to secure the hose ends firmly, and inspect the protective sleeve for any damage before installation. It is recommended to replace any associated clamps or fittings showing wear to maintain a leak-free system.

Quality Assurance and Warranty

Dayco manufactures the Small I.D. Heater Hose 87965 to meet stringent SAE specifications, ensuring consistent quality and durability. The EPDM material and protective sleeve contribute to long service life under typical automotive operating conditions. Warranty details are subject to Dayco’s standard policies and may vary; consult product documentation or the manufacturer for specific coverage information.