Dayco 87893 HVAC Heater Hose - Heater To Pipe or Heater To Valve

Overview

Dayco 87893 is a small I.D. heater hose built for HVAC coolant routing where a 5/8-inch connection is required. It uses EPDM construction and follows SAE J20R3 Class D-1 and SAE J1684 Type EC specifications for heater hose applications.

Compatible With 2007-2012 Acura RDX heater-to-valve routing, 2003-2009 Lexus GX470 heater-to-pipe routing, and 2003-2009 Toyota 4Runner heater-to-pipe routing. This Dayco heater hose is identified by part number 87893.

Key Features

• EPDM rubber construction for heater hose service.
• 5/8-inch inside diameter at both ends for matched coolant connections.
• Single I.D. hose design for HVAC hose routing.
• Black finish for a clean underhood appearance.
• Built to SAE J20R3 Class D-1 and SAE J1684 Type EC standards.

Product Details

The Dayco Small I.D. Heater Hose line focuses on heater and coolant transfer hoses with the dimensions and material properties needed for common HVAC routing. Part number 87893 is a 5/8-inch hose with equal end diameters, making it suitable for direct replacement in applications that call for this size and configuration. In fitments such as the Acura RDX, Lexus GX470, and Toyota 4Runner, the hose serves the heater circuit connection between the listed components.

This part cross-references Gates (e.g., 18039, 19363) for the same application.

What It Helps Address

• Cracked or aged heater hose material.
• Incorrect hose diameter at the heater circuit connection.
• Coolant transfer issues in HVAC routing.
• Replacement needs for worn heater-to-valve or heater-to-pipe hose runs.

Installation Notes

Verify hose routing, end diameter, and connection points before installation. Match the hose to the vehicle’s heater circuit layout and confirm the listed heater-to-valve or heater-to-pipe application. Inspect adjoining fittings and clamps for wear before reassembly.

Quality Assurance

Dayco heater hoses are manufactured to published SAE specifications for heater hose service, supporting consistent material and dimensional requirements for replacement use.