Dayco 87004 HVAC Heater Hose - Engine To Oil Cooler, Pipe To Intake Manifold or Pipe To Throttle Body

Dayco Small I.D. Heater Hose 87004

Dayco 87004 is a Small I.D. Heater Hose built for HVAC heater hose routing in select Ford, Geo, and Isuzu applications. It uses EPDM construction and a 3/8 in. inside diameter at both ends for a direct replacement in small-diameter coolant transfer lines.

This Dayco Small I.D. Heater Hose line focuses on OE-style hose sizing and material selection for heater and bypass routing. Part number 87004 is specified for 1985-1986 Ford Mustang, 1990-1993 Geo Storm, and 1990 Isuzu Impulse applications where the hose runs from the pipe to the throttle body or intake manifold.

Key Features

• EPDM rubber construction for heater hose service
• 3/8 in. inside diameter at both ends
• Single I.D. hose design
• Black finish for a factory-style appearance
• Meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• Dayco part number 87004

Detailed Description

Dayco 87004 is a small I.D. heater hose engineered for HVAC and coolant transfer routing where a 3/8 in. hose is required. The EPDM material is selected for heater hose use, and the single I.D. construction keeps the hose size consistent from end to end. This makes it a practical replacement for vehicles that use a pipe-to-throttle-body or pipe-to-intake-manifold hose path. For buyers searching for a 1985-1986 Ford Mustang heater hose, a 1990-1993 Geo Storm heater hose, or a 1990 Isuzu Impulse heater hose, part number 87004 matches those listed applications.

This part cross-references Gates 18304 for the same application.

What It Helps Address

• Cracked or hardened heater hose sections
• Coolant seepage at small-diameter hose connections
• Restricted heater hose routing caused by aged rubber
• Incorrect hose sizing at 3/8 in. connections
• Replacement needs for pipe-to-throttle-body and pipe-to-intake-manifold routing

Installation Notes and Tips

Verify the hose path, end diameters, and routing before installation. Confirm that the application calls for a 3/8 in. inside diameter at both ends and compare the original hose length and bend profile to Dayco 87004. Inspect adjoining pipes, clamps, and fittings for wear or corrosion before installing the new hose.

Quality Assurance

Dayco lists this hose to SAE J20R3 Class D-1 and SAE J1684 Type EC specifications, supporting consistent heater hose material and performance requirements for the listed vehicles.