Dayco 87831 HVAC Heater Hose - Engine To Tee or Valve To Pipe

Dayco Small I.D. Heater Hose 87831

Dayco 87831 is a Small I.D. Heater Hose built for HVAC heater hose service in select Ford Ranger and Mazda B2300 applications. It uses EPDM construction with a black finish and 5/8-inch inside diameter at both ends for direct replacement of the specified heater hose routing.

The Dayco Small I.D. Heater Hose line focuses on OE-style fitment for heater circuit connections where a compact hose diameter is required. Part number 87831 is specified for valve-to-pipe and engine-to-tee positions in the listed Ford Ranger and Mazda B2300 applications.

Key Features

• EPDM heater hose construction for HVAC coolant routing
• 5/8-inch inside diameter at both ends
• Single I.D. hose design
• Black finish
• Meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• Fits select 2001-2003 Ford Ranger and Mazda B2300 engine-to-tee applications
• Fits select 2005-2011 Ford Ranger and 2005-2010 Mazda B2300 valve-to-pipe applications

Detailed Description

Dayco 87831 is an HVAC heater hose for vehicles that require a 5/8-inch small inside diameter hose in the heater circuit. The EPDM material is suited for coolant transfer in heater hose service, while the single I.D. hose layout supports the specified routing on Ford Ranger and Mazda B2300 models. This part cross-references Duralast B87831 for the same application. Fits 2005-2011 Ford Ranger, valve to pipe. Fits 2001-2003 Ford Ranger, engine to tee. Fits 2005-2010 Mazda B2300, valve to pipe. Fits 2001-2003 Mazda B2300, engine to tee. Part number 87831 is also referenced by Ford OE numbers 1L5H-18D334-DA, 1L5Z-18472-BB, and F87H-18334-DA.

Common Uses

• Replacing a cracked or hardened heater hose
• Restoring coolant flow through the heater circuit
• Addressing leaks at valve-to-pipe or engine-to-tee hose runs
• Correcting hose fitment issues on 5/8-inch heater hose connections
• Servicing HVAC coolant routing on Ford Ranger and Mazda B2300 models

Installation Notes and Tips

Verify the hose routing, end diameters, and position before installation. Confirm the vehicle uses a 5/8-inch heater hose connection at the listed valve-to-pipe or engine-to-tee location. Inspect adjoining pipes, valves, and clamps for wear or corrosion before installing Dayco 87831.

Quality Assurance

Dayco 87831 is built to SAE J20R3 Class D-1 and SAE J1684 Type EC specifications for heater hose service. The EPDM construction and OE-style application coverage support direct replacement use in the listed Ford Ranger and Mazda B2300 fitments.