Dayco 87675 HVAC Heater Hose

Dayco Small I.D. Heater Hose 87675

Dayco 87675 is a Small I.D. Heater Hose built for heater circuit service where a 5/8 in. inside diameter is required at both ends. Made from EPDM and finished in black, this single I.D. hose is specified to SAE J20R3 Class D-1 and SAE J1684 Type EC standards for heater hose applications.

Key Features

• EPDM construction for heater hose use
• 5/8 in. inside diameter at End 1 and End 2
• Single I.D. hose design for direct heater circuit routing
• Black finish for a clean OE-style appearance
• Built to SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• Dayco part number 87675

Product Details

The Dayco Small I.D. Heater Hose line is focused on replacement routing for smaller heater connections found in many domestic and import vehicles. This hose is used in applications such as Toyota RAV4 heater outlet routing, Ford Mustang heater outlet service, and Chrysler Sebring heater-to-pipe connections. It also appears in fitments for Toyota Land Cruiser, Ford Explorer, and Nissan Pathfinder heater circuits. If you are replacing a worn heater hose on a Toyota T100, Ford E-150 Econoline, or Pontiac Montana with auxiliary heater plumbing, Dayco 87675 provides the correct 5/8 in. hose size for those listed applications.

This part cross-references Gates 18821 for the same application.

Common Problems This Hose Can Address

• Cracked or hardened heater hose material
• Coolant seepage at small-diameter heater connections
• Restricted heater flow caused by aged hose collapse
• Incorrect hose size during heater hose replacement
• Service needs on heater-to-pipe, heater-to-valve, and tee-to-engine routing

Installation Notes and Tips

• Verify the vehicle’s heater hose routing and connection style before installation.
• Measure the existing hose ends to confirm the 5/8 in. inside diameter requirement.
• Some listed applications note that the hose must be cut on both ends for proper fit.
• Use the fitment notes for vehicles with A/C or auxiliary heater equipment, since routing can vary by configuration.
• Inspect clamps, pipes, and adjoining heater components before installing the new hose.

Quality Assurance

Dayco manufactures this heater hose to meet published SAE specifications for heater hose service, supporting consistent material and dimensional requirements for the listed applications. Part number 87675 is built for direct replacement use in the fitments shown.