Gates 18875 HVAC Heater Hose - Heater To Pipe or Water Pump To Converter

Gates 18875 Molded Heater Hose Overview

The Gates 18875 molded heater hose is an OEM-style coolant hose built for tight engine compartments where a formed routing path matters. Made from EPDM, it is shaped to match factory hose geometry and is approved for coolant, water, air, and marine applications.

Compatible with Nissan LEAF heater and water pump routing, this molded hose also serves select Isuzu Trooper heater-to-pipe applications. The Gates Molded Heater Hose line focuses on factory-fit replacement hoses for modern vehicles with compact underhood packaging.

Key Features

• Gates molded heater hose, part number 18875
• EPDM construction for coolant, water, and air service
• Factory-molded shape for tighter engine compartments
• 16 mm inside diameter at both ends
• Centerline length: 15.9 in. (404 mm)
• OEM-style replacement for formed hose routing
• Approved for marine applications

Detailed Product Description

Gates 18875 is a molded coolant and heater hose designed to follow the original routing used in factory applications. Its EPDM construction supports heat and fluid exposure in HVAC and cooling-system service, while the molded profile helps it fit around nearby components in compact engine bays. This hose is a direct-style replacement for 2020-2022 Nissan LEAF water pump outlet routing, 2013-2019 Nissan LEAF water pump to converter routing, and 1986-1991 Isuzu Trooper heater-to-pipe routing. If you are searching for a molded heater hose for Nissan LEAF or an Isuzu Trooper heater hose replacement, Gates 18875 is built for those exact applications.

This part cross-references Dayco 87700 for the same application.

What It Helps Address

• Coolant leaks caused by cracked or aged molded hose sections
• Improper hose routing in tight engine compartments
• Heat-related hose deterioration in HVAC and cooling circuits
• Replacement needs for a Nissan LEAF molded heater hose
• Replacement needs for an Isuzu Trooper heater-to-pipe hose

Installation Notes and Tips

Verify end diameters, centerline length, and routing before installation. Match the molded shape to the original hose path so the hose clears adjacent components and maintains proper flow. Inspect mating tubes, clamps, and sealing surfaces for wear or corrosion before installing the replacement hose.

Quality Assurance

Gates manufactures this molded heater hose as an OEM-style replacement built to factory dimensions and material requirements for the listed applications. The hose is also approved for marine use, reflecting its broader service range in coolant, water, and air systems.