Dayco 87894 HVAC Heater Hose - Heater Inlet or Heater To Pipe

Dayco Small I.D. Heater Hose 87894

Dayco 87894 is a Small I.D. Heater Hose built for HVAC heater hose service where a 5/8 in. inside diameter is required at both ends. Made from EPDM and finished in black, this hose includes a protective sleeve and is built to SAE J20R3 Class D-1 and SAE J1684 Type EC specifications for heater circuit use.

Use this Dayco heater hose for Subaru Legacy and Subaru Outback applications that call for a small I.D. heater hose. The 87894 part number is a direct reference for buyers searching by OE-style replacement number, and it cross-references Subaru 72411-AE02A for the same application.

Key Features

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

Detailed Description

Dayco 87894 is a formed HVAC heater hose designed for coolant transfer in the heater circuit. The EPDM rubber construction is suited for underhood temperature exposure, while the protective sleeve adds an extra layer where the hose routes near surrounding components. With a 5/8 in. inside diameter on both ends and a single I.D. hose layout, this part is built for specific heater inlet and heater-to-pipe connections rather than universal use.

This hose is listed for 2005-2006 Subaru Outback heater inlet, 2003-2004 Subaru Legacy heater to pipe to engine, 1995-1999 Subaru Legacy heater to pipe to thermo, and 1996-1997 Subaru Legacy heater to pipe with HVAC heater hose at the thermo end. Buyers searching for a Subaru Legacy heater hose, Subaru Outback heater inlet hose, or Dayco 87894 replacement hose can use this listing to match the confirmed application.

What It Helps Address

• Cracked or aged heater hose rubber
• Coolant seepage at heater hose connections
• Restricted heater circuit flow from deteriorated hose material
• Incorrect hose sizing at 5/8 in. heater connections
• Replacement needs for Subaru Legacy and Subaru Outback heater routing

Installation Notes and Tips

Verify the hose routing, end diameters, and position before installation. This part is listed for heater inlet and heater-to-pipe locations only, so confirm the vehicle year and engine-side routing against the original hose. Inspect adjoining clamps, pipes, and coolant condition during replacement, and make sure the protective sleeve is positioned where the hose passes near heat or abrasion points.

Quality Assurance

Dayco manufactures this heater hose to published SAE specifications for heater hose applications. The 87894 part number is also listed against OE and aftermarket references, including Subaru 72411-AE02A, for application matching.