Gates 18059 HVAC Heater Hose - Heater Inlet

Gates Molded Heater Hose for Acura TL

The Gates 18059 molded heater hose is an OEM-style coolant hose built for tight engine compartments and precise routing. It is made from EPDM and formed to match the factory shape needed for heater inlet service on select Acura TL models.

Key Features

• Factory-molded design for a direct OE-style fit
• EPDM construction for coolant, water, and air applications
• Small inside diameter: 16 mm (.63 in) at both ends
• Centerline length: 538 mm (21.2 in)
• Approved for marine applications
• Gates Molded Heater Hose line for compact engine bay routing

Product Details

Gates part number 18059 is a molded heater hose designed for the heater inlet position on 2009-2014 Acura TL models. The molded shape helps the hose follow the original routing in smaller, tighter engine compartments, reducing the need for improvised bends or stretched hose paths. This hose is built from EPDM, a material commonly used in cooling-system service for its resistance to heat and coolant exposure. This part cross-references Bosch (e.g., 18059) for the same application.

The Gates Molded Heater Hose product line focuses on OE-style replacement hoses formed to match factory contours. For Acura TL heater hose replacement, Gates 18059 provides the correct molded profile and dimensions for a clean installation and proper routing.

Common Problems This Hose Can Address

• Coolant leaks at a worn or cracked heater hose
• Restricted heater flow caused by hose collapse or deterioration
• Poor routing from a straight hose used in a molded application
• Heat-related softening or swelling in an aging EPDM hose
• Service issues on the heater inlet connection in the engine bay

Installation Notes and Tips

Verify the heater inlet routing and hose dimensions before installation. Match the 16 mm inside diameter at both ends and confirm the 538 mm centerline length against the original hose. Inspect adjoining fittings, clamps, and coolant passages for wear or contamination before installing the replacement hose.

Quality Assurance

Gates is known for producing OE-style hose components for automotive cooling and HVAC service. The molded construction and EPDM material support consistent fitment for the specified Acura TL applications.