Dayco 87705 HVAC Heater Hose - Heater Outlet, Heater To Pipe, Heater To Valve or Lower

Dayco Small I.D. Heater Hose 87705

Dayco 87705 is a Small I.D. Heater Hose built for heater circuit service in vehicles that use a 5/8 in. inside diameter connection at both ends. Made from EPDM and finished in black, this HVAC heater hose is built to meet SAE J20R3 Class D-1 and SAE J1684 Type EC specifications for heater hose applications.

Use this hose when servicing heater outlet, heater-to-pipe, or heater-to-valve connections on select Toyota Sequoia, Honda Pilot, Acura MDX, Chevrolet S10, and GMC Sonoma applications. Dayco 87705 is a direct-fit style replacement for vehicles that require a small I.D. heater hose with standard 5/8 in. ends.

Key Features

• EPDM construction for heater hose service
• Black finish for a clean OE-style appearance
• 5/8 in. inside diameter at both ends
• Single I.D. hose design for heater circuit routing
• Meets SAE J20R3 Class D-1 and SAE J1684 Type EC requirements
• Dayco Small I.D. Heater Hose line for select HVAC hose applications

Application Details

The Dayco Small I.D. Heater Hose line is built for vehicles that need a smaller-diameter heater hose in the HVAC system. Part number 87705 is used in heater-to-pipe, heater outlet, lower, and heater-to-valve positions across a wide range of applications. This part cross-references Gates 18883 and NAPA 10883 for the same application.

Fits 2001-2007 Toyota Sequoia, heater to pipe. Fits 2005 Chevrolet Cavalier, heater outlet. Fits 2004-2005 Chevrolet Malibu, heater outlet. Fits 2005 Pontiac Sunfire, heater outlet. Fits 2003-2004 Honda Pilot, lower and heater to valve. Fits 2001-2002 Acura MDX, heater to valve. Fits 1994, 1993, 1992, 1991, 1990, 1989, and 1988 Chevrolet S10 Blazer, heater to pipe. Fits 1994 and 1991 Oldsmobile Bravada, heater to pipe. Fits 1994 GMC Jimmy, heater to pipe. Fits 1993 and 1992 Chevrolet S10, heater to pipe. Fits 1992-1993 GMC Jimmy, heater to pipe. Fits 1992-1993 GMC Sonoma, heater to pipe. Fits 1988-1991 GMC S15 Jimmy, heater to pipe. Fits 1991 GMC Sonoma, heater to pipe. Fits 1988-1990 GMC S15, heater to pipe.

Common Uses

• Replacing a cracked or hardened heater hose
• Restoring coolant flow through the heater circuit
• Repairing leaks at heater outlet or heater-to-pipe connections
• Addressing soft spots, swelling, or hose collapse in the HVAC hose run
• Servicing select Toyota Sequoia, Honda Pilot, Acura MDX, and Chevrolet S10 applications

Installation Notes

Verify the hose routing, end diameter, and position before installation. Confirm the vehicle uses a 5/8 in. heater hose connection and match the application to the listed heater outlet, heater-to-pipe, lower, or heater-to-valve location. Inspect adjoining pipes, clamps, and fittings for corrosion or wear before installing the new hose. On vehicles with air conditioning notes in the fitment data, confirm the exact engine and HVAC configuration before ordering.

Quality Assurance

Dayco heater hoses are built to meet published SAE specifications for heater hose service, including SAE J20R3 Class D-1 and SAE J1684 Type EC. The EPDM hose construction is selected for use in coolant and heater circuit environments where heat and fluid exposure are expected.