Gates 18963 HVAC Heater Hose - Heater To Pipe-1 or Heater To Pipe-2

Gates Molded Heater Hose 18963 Overview

Gates 18963 is a molded heater hose built for tight engine compartments where a straight hose will not route cleanly. This OEM-style EPDM hose is shaped to match the factory path and is suitable for coolant, water, and air service, with marine application approval.

• Factory-molded design for precise routing in compact engine bays
• EPDM construction for heater and coolant service
• Small I.D. hose with 0.62 in. end 1 and 0.75 in. end 2
• Centerline length: 16.9 in. (429 mm)
• Direct replacement style for HVAC heater hose applications

Product Details

This Gates molded heater hose is part of the Molded Heater Hose line, which focuses on OE-style hose shapes for vehicles with tighter packaging around the engine and HVAC plumbing. Part number 18963 is formed to follow the original routing, helping maintain proper hose alignment between the heater connection points and reducing the need for improvised bends. It is a practical replacement for 1994-1997 Honda Passport heater to pipe-1 and 1993-1997 Isuzu Rodeo heater to pipe-2 applications. This part cross-references Gates 10963 for the same application.

Common Uses

• Replacing a cracked or hardened heater hose on a Honda Passport
• Restoring coolant flow in an Isuzu Rodeo heater circuit
• Correcting hose routing issues in a tight engine compartment
• Addressing leaks at molded hose bends or connection points
• Replacing a hose that no longer holds its factory shape

Installation Notes

Verify end diameters and centerline length before installation to confirm routing and fitment. This molded hose is shaped for the listed heater-to-pipe positions on 1994-1997 Honda Passport and 1993-1997 Isuzu Rodeo models. Inspect adjoining pipes, clamps, and sealing surfaces for wear before installing the new hose.

Quality Assurance

Gates manufactures this hose as an OE-style molded replacement using EPDM material for automotive thermal and fluid service. The design follows factory-style routing for the listed Honda Passport and Isuzu Rodeo heater hose applications.