Dayco 86842 HVAC Heater Hose - Tee To Pipe-1, Throttle Body Outlet or Throttle Body To Engine

Dayco Small I.D. Heater Hose 86842

Dayco 86842 is a Small I.D. Heater Hose built for HVAC heater hose service where a compact 5/16 in. inside diameter is required. Made from EPDM and finished in black, it provides a direct-fit hose option for select Toyota Corolla, Chevrolet Prizm, Pontiac Vibe, and Volkswagen Beetle applications.

Key Features

• EPDM construction for heater hose use
• 5/16 in. inside diameter at both ends
• Single I.D. hose design
• Black finish for a clean OE-style appearance
• Meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• Dayco Small I.D. Heater Hose line for compact coolant routing

Product Details

The Dayco Small I.D. Heater Hose line is built for tight-diameter coolant and heater connections where routing space is limited. Part number 86842 uses EPDM rubber for heater hose service and features matching 5/16 in. inside diameters on both ends, with 19/32 in. outside diameters. This hose is listed for the throttle body outlet, throttle body to engine, and tee-to-pipe-1 positions across select vehicles, including 1998-2002 Toyota Corolla, 1998-2002 Chevrolet Prizm, 1999-2003 Volkswagen Beetle, and 2003-2006 Pontiac Vibe.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Vehicle Fitment

• Fits 2003-2006 Pontiac Vibe, Throttle Body Outlet, Small I.D. Heater Hose
• Fits 1999-2003 Volkswagen Beetle, Tee To Pipe-1, Small I.D. Heater Hose
• Fits 1998-2002 Chevrolet Prizm, Throttle Body Outlet, Small I.D. Heater Hose
• Fits 1998-2002 Toyota Corolla, Throttle Body To Engine, Small I.D. Heater Hose

Common Uses

• Replacing a cracked or hardened heater hose
• Restoring coolant flow at the throttle body outlet
• Repairing leaks at small-diameter heater hose connections
• Addressing soft spots, swelling, or hose collapse
• Servicing compact coolant routing on Corolla, Prizm, Vibe, and Beetle applications

Installation Notes

Verify the hose routing, end diameters, and position before installation. Match the 5/16 in. inside diameter and confirm the throttle body outlet, throttle body to engine, or tee-to-pipe-1 location as listed for your vehicle. Inspect adjoining clamps, pipes, and fittings for wear before installing the new hose.

Quality Assurance

Dayco 86842 is built to SAE J20R3 Class D-1 and SAE J1684 Type EC specifications for heater hose service.