Dayco 87880 HVAC Heater Hose

Dayco Small I.D. Heater Hose 87880

Dayco 87880 is a Small I.D. Heater Hose built for heater circuit service where a dual inside diameter is required. Made from EPDM and finished in black, it is specified for heater outlet and heater-to-pipe applications across a wide range of Buick, Chevrolet, Pontiac, Saturn, and Kia vehicles.

The Dayco Small I.D. Heater Hose line focuses on replacement hoses for tight-diameter heater connections, including dual I.D. routing where one end steps from 5/8 in. to 3/4 in. This hose follows SAE J20R3 Class D-1 and SAE J1684 Type EC specifications for heater hose service.

Key Features

• EPDM construction for heater hose use
• Dual I.D. hose design with 5/8 in. end 1 and 3/4 in. end 2
• Black finish for a factory-style appearance
• End outside diameters: 15/16 in. and 1 1/16 in.
• Meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• Dayco part number 87880 for heater circuit replacement

Detailed Description

Dayco 87880 is a dual I.D. HVAC heater hose used in small-diameter coolant routing between the heater core, heater outlet, pipe, tee, or restrictor locations. It is listed for applications such as 2000-2005 Buick Century heater to pipe (lower), 2000-2003 Chevrolet Impala heater to pipe (lower), 2000-2003 Pontiac Grand Prix heater to pipe (lower), and 2006-2010 Kia Optima heater outlet. This part number also appears in fitments for 2009-2011 Buick Lucerne and 2006-2009 Chevrolet Uplander with auxiliary heater routing.

This hose cross-references ACDelco 14197S and Gates 19079 for the same application. If you are replacing a worn heater hose on a Chevrolet Impala, Pontiac Grand Prix, or Buick Century, Dayco 87880 provides the correct small I.D. configuration for the listed heater connections.

What It Is Used For

• Replacing cracked or softened heater hose sections
• Restoring coolant flow between the heater core and engine-side piping
• Addressing leaks at heater outlet, heater-to-pipe, or heater-to-restrictor connections
• Replacing a hose with the correct stepped inside diameter for the application
• Servicing heater circuits on Buick, Chevrolet, Pontiac, Saturn, and Kia models

Installation Notes and Tips

Verify the hose routing and end sizes before installation. Match the 5/8 in. and 3/4 in. ends to the vehicle’s heater connection points, and confirm the listed position for your application, such as heater outlet, heater to pipe, heater to tee, or heater to restrictor. Inspect adjoining pipes, clamps, and fittings for corrosion or damage before installing the new hose.

For fitment-specific replacement, confirm your vehicle against the listed applications: Fits 2000-2005 Buick Century, Heater To Pipe (Lower); Fits 2000-2003 Chevrolet Impala, Heater To Pipe (Lower); Fits 2006-2010 Kia Optima, Heater Outlet; Fits 2009-2011 Buick Lucerne, Heater To Pipe-3.

Quality Assurance

Dayco manufactures this heater hose to SAE J20R3 Class D-1 and SAE J1684 Type EC requirements for heater hose service. The EPDM construction is selected for coolant and heater circuit use, supporting dependable replacement in the specified applications.