Dayco 87792 HVAC Heater Hose

Dayco Small I.D. Heater Hose 87792

Dayco 87792 is a Small I.D. Heater Hose built for heater circuit repairs that require a 5/8 in. inside diameter on both ends. Made from EPDM with a protective sleeve, this black heater hose is specified to SAE J20R3 Class D-1 and SAE J1684 Type EC standards for heater and coolant routing applications.

The Dayco Small I.D. Heater Hose line focuses on direct-fit heater hose service for vehicles that need a compact hose section between the heater outlet, pipe, inlet, thermostat, or water pump. Part number 87792 is a practical choice for repair work on Chrysler, Dodge, Jeep, Hyundai, Subaru, Kia, and other listed applications.

Key Features

• EPDM construction for heater hose service
• 5/8 in. inside diameter at both ends
• Black finish for a clean OE-style appearance
• Protective sleeve included
• Single I.D. hose design
• Built to SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• Dayco 87792 small I.D. heater hose for targeted HVAC hose replacement

Product Details

This heater hose is used in coolant and HVAC routing where a smaller diameter hose section is required. The EPDM rubber construction is suited for underhood heat exposure, while the protective sleeve adds an extra layer of abrasion resistance in routed or contact-prone areas. Dayco 87792 is listed across a wide range of vehicles, including Jeep Wrangler and Jeep Cherokee heater outlet applications, Chrysler Town & Country heater outlet service, and Dodge Grand Caravan heater outlet to pipe configurations.

This part cross-references Gates 18844 and NAPA 10844 for the same application.

What It Helps Repair

• Cracked or hardened heater hose sections
• Coolant leaks at the heater outlet or pipe connection
• Restricted heater flow caused by deteriorated hose material
• Heat-related hose wear in routed engine bay locations
• Replacement needs on vehicles such as Jeep Wrangler, Dodge Grand Caravan, and Hyundai Tucson

Installation Notes and Tips

• Verify the required 5/8 in. inside diameter before installation.
• Some listed applications note that the hose must be cut on both ends.
• Confirm the heater hose routing position: heater outlet, heater inlet, heater to pipe, heater to engine, or heater to water pump.
• Check clearance around clamps, bends, and nearby components before final routing.
• Match the vehicle notes exactly, including configurations such as without auxiliary A.C. or without auxiliary heater where specified.

Quality Assurance

Dayco manufactures this hose to SAE J20R3 Class D-1 and SAE J1684 Type EC specifications, supporting consistent material and performance requirements for heater hose service. The Dayco 87792 part number is cataloged for broad vehicle coverage across 1989-2020 applications.