Dayco 87606 HVAC Heater Hose

Dayco Small I.D. Heater Hose 87606

Dayco 87606 is a Small I.D. Heater Hose built for HVAC heater circuit service where a dual inside diameter connection is required. Made from EPDM and finished in black, it is specified for heater hose routing that transitions between 5/8 in. and 3/4 in. connections.

Use this Dayco heater hose for direct replacement service on select Chrysler Sebring, Dodge Stratus, Nissan Sentra, Buick Regal, Chevrolet Impala, Chevrolet Monte Carlo, Pontiac Grand Prix, Saturn Vue, Ford Windstar, and other listed applications. The 87606 part number is also referenced in cross applications such as Gates 18073 and NAPA 10073.

Key Features

• Dual I.D. hose design with 5/8 in. end 1 inside diameter and 3/4 in. end 2 inside diameter
• EPDM construction for heater hose service
• Black finish for OE-style appearance
• Meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• Small I.D. Heater Hose line for select HVAC hose routing
• Dayco 87606 identification for catalog and fitment lookup

Product Details

Dayco’s Small I.D. Heater Hose line focuses on heater and coolant transfer routing where a smaller diameter connection is needed at one end and a larger connection at the other. Part number 87606 uses EPDM rubber, a common material for heater hose service, and is built to SAE J20R3 Class D-1 and SAE J1684 Type EC standards. This makes it a practical replacement for heater inlet, heater outlet, heater-to-engine, heater-to-tee, and similar HVAC hose positions listed in the fitment data.

Fits 2001-2006 Chrysler Sebring, Heater To Engine. Fits 2001-2006 Dodge Stratus, Heater To Engine. Fits 2005-2006 Nissan Sentra, Left. Fits 1999-2004 Buick Regal, Heater Inlet. Fits 2002-2004 Nissan Sentra, Heater Outlet. Fits 2001-2003 Chevrolet Impala, Heater Inlet. Fits 2000-2003 Chevrolet Monte Carlo, Lower and Heater Inlet. Fits 1999-2003 Pontiac Grand Prix, Heater Inlet. Fits 2002-2003 Saturn Vue, Heater To Tee. Fits 2000 Ford Windstar, Pipe To Water Pump. Fits 1993 Chevrolet P30, Heater To Tee. Fits 1993 GMC P3500, Heater To Tee. Fits 1990 Dodge Dakota, Valve To Intake Manifold. Fits 1989 Dodge Dakota, Valve To Intake Manifold. Fits 1988 Dodge Dakota, Pipe To Intake Manifold. Fits 1987 Dodge Dakota, Intake Manifold To Heater.

Common Repair Uses

• Replacing a cracked or softened heater hose in the coolant circuit
• Restoring heater flow on vehicles with heater inlet or outlet hose routing
• Addressing leaks at dual-diameter hose connections
• Servicing heater-to-engine, heater-to-tee, or intake-manifold heater hose paths
• Replacing aged EPDM hose that no longer seals properly

Installation Notes and Tips

Verify both hose-end inside diameters before installation: 5/8 in. on one end and 3/4 in. on the other. Match the hose to the exact heater hose position listed for your vehicle, since fitment varies by engine and routing. Inspect clamps, adjoining pipes, tees, and fittings for corrosion or wear before installing the new hose. This hose does not include a heat shield or protective sleeve.

Quality Assurance

Dayco heater hoses are built to published SAE specifications for heater hose service and cataloged for direct-fit replacement applications. Part number 87606 is a Dayco Small I.D. Heater Hose used across multiple OE and aftermarket cross-reference listings.