Gates 18930 HVAC Heater Hose - Heater - Upper To Tee, Pipe-2 To Engine or Upper - Engine To Alternator

Gates Molded Heater Hose 18930 Overview

Gates 18930 is a molded heater hose built for tight engine bays where a straight hose will not route cleanly. This factory-molded, OE-style coolant hose is made from EPDM and is sized with 16 mm inside diameter ends for a precise fit in select Toyota Highlander, BMW 540i, BMW 740i, BMW 740iL, Nissan Pulsar NX, and Nissan Sentra applications.

The Gates Molded Heater Hose line focuses on formed replacement hoses that follow original routing in compact HVAC and cooling system layouts. Part number 18930 is shaped for direct replacement use in heater, coolant, water, and air service, and it is also approved for marine applications.

Key Features

• Factory-molded, OE-style hose for tighter engine compartments
• EPDM construction for heater and coolant service
• 16 mm inside diameter at both ends
• 8.4 in. centerline length for formed routing
• Suitable for coolant, water, and air applications
• Approved for marine applications
• Gates 18930 molded heater hose for HVAC and cooling system repair

Detailed Description

Gates 18930 is a molded heater hose designed to match the routing needs of modern and older vehicles with limited clearance around the engine. Its formed shape helps maintain the original hose path in applications such as the 2004-2007 Toyota Highlander heater upper to tee connection, as well as select BMW upper engine-to-alternator routing and Nissan pipe-to-engine layouts. If you are replacing a worn Toyota Highlander heater hose or sourcing a molded heater hose for BMW 540i, BMW 740i, or BMW 740iL service, this part number provides an OE-style solution with the correct molded profile.

This hose is also listed for 1986-1988 Nissan Pulsar NX and Nissan Sentra applications, making Gates 18930 a practical replacement for vehicles that need a formed hose rather than a universal straight section. Cross-reference part numbers include Continental 63210 and CSF 10930 for the same application.

Common Repair Uses

• Replacing a cracked or softened heater hose
• Restoring coolant flow in a molded hose routing
• Repairing leaks at a heater, coolant, or water line connection
• Replacing a hose that no longer holds its original formed shape
• Addressing fitment issues in compact engine compartments

Installation Notes and Tips

• Verify end inside diameter, centerline length, and molded shape before installation.
• Confirm the vehicle-specific routing, especially on BMW upper engine-to-alternator and Toyota Highlander heater upper to tee applications.
• Inspect adjoining clamps, tees, and pipe ends for wear before installing the new hose.
• Use the hose only in the listed application path to maintain proper routing and clearance.

Quality Assurance

Gates manufactures this molded heater hose as an OE-style replacement part for direct-fit service in the listed applications. The EPDM construction and factory-molded profile support consistent routing and dependable hose replacement in HVAC and cooling system repairs.