Gates 18141 HVAC Heater Hose - Heater Inlet

Gates Molded Heater Hose 18141 Overview

The Gates 18141 molded heater hose is a factory-molded, OEM-style coolant hose built for tight engine bays where a straight hose will not route correctly. It is made from EPDM and is approved for coolant, water, air, and marine applications.

This molded heater hose is a direct-fit style replacement for select Nissan Frontier and Nissan Xterra heater inlet applications. Gates Molded Heater Hose 18141 helps restore proper hose routing in compact engine compartments while maintaining a formed shape that matches the original layout.

Key Features

• Brand: Gates
• Brand line: Molded Heater Hose
• Part number: 18141
• EPDM construction for heater and coolant service
• Factory-molded, OEM-style shape
• End inside diameters: 15 mm (.60 in) and 19 mm (.73 in)
• Centerline length: 356 mm (14 in)
• Approved for coolant, water, air, and marine applications
• Fits heater inlet routing in compact engine compartments

Product Line Details

Gates Molded Heater Hose products are formed to follow original hose routing where space is limited. That molded design helps the hose maintain its shape during installation and service, which is important in vehicles with smaller, tighter-fitting engine compartments. The Gates 18141 follows that product-line approach for heater inlet use.

Detailed Description

Gates 18141 is a molded HVAC heater hose designed for select Nissan applications that require a formed heater inlet hose. The EPDM material is suited for coolant transfer and related fluid or air service, while the molded profile supports OE-style routing around nearby components. This part cross-references Bosch 18141 for the same application.

Compatible with 1999-2001 Nissan Frontier heater inlet, 2003-2004 Nissan Frontier heater inlet, and 2000-2004 Nissan Xterra heater inlet. If you are replacing a worn or collapsed heater hose on a Nissan Frontier or Nissan Xterra, Gates 18141 provides the correct molded shape for the listed fitments.

Common Uses

• Replacing a cracked or leaking heater inlet hose
• Restoring coolant flow through the heater circuit
• Correcting hose routing in a tight engine compartment
• Addressing softening, swelling, or hose collapse
• Repairing a damaged molded hose on a Nissan Frontier or Nissan Xterra

Installation Notes and Tips

Verify the hose routing, end diameters, and centerline length before installation. Match the molded shape to the original hose path so the hose clears nearby belts, brackets, and engine components. Inspect adjoining clamps, fittings, and mating surfaces for wear or corrosion before installing the replacement hose.

Quality Assurance

Gates manufactures molded coolant and heater hoses for OE-style fitment and service applications. The 18141 is built to the listed dimensions and material specification for the confirmed Nissan Frontier and Nissan Xterra heater inlet applications.