Gates 12263 HVAC Heater Hose

Gates Molded Heater Hose for Lexus GX460

Gates Part Number 12263 is a molded HVAC heater hose built in an OEM-style shape for tight engine compartments. It is made from EPDM and measures 16 mm inside diameter at both ends with a 255 mm centerline length, making it a direct-fit style hose for the heater inlet circuit on select Lexus GX460 applications.

The Gates Molded Heater Hose line focuses on factory-shaped coolant routing for vehicles where straight hose sections do not match the original path. This molded design helps maintain proper hose alignment in compact engine bays, including Lexus GX460 heater hose routing where the inlet connection follows a specific formed path.

Key Features

• Gates 12263 molded heater hose for HVAC heater inlet service
• EPDM construction for coolant, water, and air applications
• Factory-molded, OEM-style shape for tighter engine compartments
• 16 mm inside diameter at both ends
• 255 mm centerline length for formed routing
• Approved for marine applications
• Direct fitment for select Lexus GX460 heater hose applications

Detailed Description

Gates 12263 is a molded coolant hose engineered for heater circuit use where a formed hose is required to match the original routing. Its EPDM construction supports coolant transfer in the HVAC system and the molded profile helps it follow the intended path without forcing the hose into position. This makes it a practical replacement for Lexus GX460 heater inlet service and other listed heater-to-pipe inlet applications.

Compatible With 2020-2021 Lexus GX460, Heater Inlet. Compatible With 2010-2018 Lexus GX460, Heater To Pipe - Inlet. This part cross-references TYC 13263 for the same application.

Common Problems This Hose Can Address

• Cracked or hardened heater hose material
• Coolant seepage at a formed hose section
• Incorrect routing from a previous straight-hose replacement
• Restricted heater coolant flow from a damaged hose path
• Fitment issues in compact engine compartments

Installation Notes and Tips

Verify the hose path, end diameters, and centerline length against the original part before installation. Inspect adjoining pipes, clamps, and sealing surfaces for wear or corrosion so the new hose seats correctly. For Lexus GX460 heater hose replacement, confirm whether the vehicle uses the heater inlet or heater-to-pipe inlet configuration listed in the fitment data.

Quality Assurance

Gates is known for OE-style molded hose construction, and this heater hose follows that factory-shaped approach for accurate routing and consistent fit. Part Number 12263 is built to match the listed application details for select Lexus GX460 models.