Gates 18957 HVAC Heater Hose - Heater To Pipe-1

Gates Molded Heater Hose 18957 Overview

The Gates 18957 molded heater hose is an OEM-style coolant hose built for tight engine bays where a straight hose will not route correctly. Its factory-molded shape and EPDM construction support coolant, water, and air transfer, and it is also approved for marine applications.

Compatible with 1996-1997 Acura SLX heater to pipe-1 and 1992-1997 Isuzu Trooper heater to pipe-1, this molded heater hose is a direct-fit service part for specific HVAC and cooling system routing needs. Gates Molded Heater Hose 18957 is made for applications that require a precise bend and stable fit.

Key Features

• OEM-style molded heater hose for accurate routing in compact engine compartments
• EPDM rubber construction for coolant, water, and air service
• End I.D.: 0.62 in. / 16 mm
• Centerline length: 12.8 in. / 325 mm
• Molded design with no branch quantity and no quick-connect fittings
• Approved for marine applications

Product Details

Gates Molded Heater Hose 18957 is part of the Gates Molded Heater Hose line, which focuses on factory-shaped replacement hoses for vehicles with tighter packaging around the engine and HVAC plumbing. The molded profile helps maintain the intended hose path, reducing the need to force a universal hose into a specific bend. For buyers searching for an Acura SLX heater hose or Isuzu Trooper heater hose replacement, this part number provides a direct, application-specific option.

This part cross-references Dayco 87748 and 87749 for the same application.

Common Problems This Hose Can Address

• Cracked or aged heater hose material
• Incorrect hose routing in a confined engine bay
• Coolant leaks at a worn heater hose section
• Restricted flow caused by a deteriorated molded hose
• Replacement needs for heater-to-pipe routing on Acura SLX and Isuzu Trooper models

Installation Notes and Tips

Verify hose routing against the original part before installation, especially on heater-to-pipe applications where bend shape matters. Inspect adjoining pipes, clamps, and sealing surfaces for wear or corrosion before installing the new hose. Confirm the hose end diameters and centerline length match the vehicle routing requirements for a proper fit.

Quality Assurance

Gates manufactures this molded heater hose as an OE-style replacement built to match the routing demands of specific vehicle applications. Part number 18957 is intended for direct replacement use on listed Acura SLX and Isuzu Trooper fitments.