Gates 12264 HVAC Heater Hose

Gates 12264 Molded Heater Hose Overview

The Gates 12264 molded heater hose is an OEM-style coolant hose built for tight engine bays where a straight hose will not route correctly. It is formed from EPDM and sized with 16 mm (0.62 in) inside diameters at both ends, with a 164 mm (6.44 in) centerline length for a precise molded fit.

Compatible with Lexus GX460 heater outlet and heater-to-pipe outlet applications, this Gates Molded Heater Hose line is made for factory-style routing in compact HVAC and cooling system layouts. The 12264 part number is also a useful reference when cross-shopping heater hose replacements for the same application.

Key Features

• Gates Molded Heater Hose, part number 12264
• EPDM construction for coolant, water, and air service
• Factory-molded shape for tighter engine compartments
• 16 mm (0.62 in) inside diameter at both ends
• 164 mm (6.44 in) centerline length
• Approved for marine applications
• OE-style routing for HVAC heater hose replacement

Detailed Product Description

The Gates Molded Heater Hose product line focuses on formed hoses that follow original routing in modern vehicles with limited clearance. This 12264 hose is shaped to match the layout needed in Lexus GX460 heater hose service, helping maintain proper hose path and connection alignment in the cooling and HVAC circuit. The molded EPDM design supports use in coolant, water, and air applications, and it is also approved for marine use.

Fits 2020-2021 Lexus GX460, Heater Outlet. Fits 2010-2018 Lexus GX460, Heater To Pipe - Outlet. This part cross-references Bosch 13264 for the same application.

Common Problems This Hose Can Address

• Cracked or leaking heater hose at the outlet connection
• Improper routing in a tight engine compartment
• Collapsed or softened hose from heat and age
• Coolant seepage at a molded hose bend
• HVAC heater circuit flow issues caused by a damaged hose

Installation Notes and Tips

Verify the hose path, end diameters, and molded shape against the original part before installation. Inspect adjoining pipes, clamps, and sealing surfaces for wear or corrosion so the replacement hose seats correctly. For Lexus GX460 applications, confirm whether the vehicle uses the heater outlet or heater-to-pipe outlet routing shown in the fitment data.

Quality Assurance

Gates is known for OE-style hose engineering and molded replacement parts that follow factory routing requirements. The 12264 molded heater hose is built to the listed dimensions and application data for consistent fitment in supported Lexus GX460 models.