Gates 23591 Radiator Coolant Hose - Upper

Gates 23591 Upper Coolant Hose for INFINITI

The Gates 23591 molded radiator coolant hose is built for upper cooling-system routing on select INFINITI vehicles. It uses EPDM construction and OEM-quality dimensions to support a precise replacement for worn, cracked, or leaking upper radiator hose applications.

Key Features

• Molded coolant hose for upper radiator hose applications
• EPDM rubber construction for cooling-system service
• End 1 inside diameter: 1.33 in. (34 mm)
• End 2 inside diameter: 1.33 in. (34 mm)
• Centerline length: 16.1 in. (409 mm)
• No spring, no modular sections, and no quick-connect fittings
• Direct replacement style for select INFINITI Q70, Q70L, QX70, FX37, M35h, M37, and FX35 models

Product Details

Gates Molded Coolant Hose line is engineered for upper, lower, bypass, heater, and other coolant routing needs, with dimensions shaped to match OE-style fitment. The molded profile helps the hose follow the factory path in the engine bay, which is important for maintaining proper coolant flow and reducing stress at connection points. Gates 23591 is a practical replacement choice for drivers servicing an INFINITI Q70 upper coolant hose, INFINITI FX35 upper radiator hose, or other listed upper hose applications.

This part cross-references Continental 66851 for the same application.

Vehicle Fitment

• Fits 2014-2019 INFINITI Q70, Upper
• Fits 2015-2019 INFINITI Q70L, Upper
• Fits 2014-2017 INFINITI QX70, Upper
• Fits 2013 INFINITI FX37, Upper
• Fits 2012-2013 INFINITI M35h, Upper
• Fits 2011-2013 INFINITI M37, Upper
• Fits 2009-2012 INFINITI FX35, Upper

Installation Notes

Confirm the hose routing, end diameters, and centerline length against the original part before installation. Inspect adjoining clamps, necks, and coolant passages for wear or corrosion, and replace any damaged sealing surfaces before refilling the cooling system. After installation, refill with the correct coolant and check for leaks at operating temperature.

Quality Assurance

Gates manufactures this molded coolant hose to OEM-quality specifications for consistent fit and dependable cooling-system service. The Gates 23591 is part of a broad replacement hose line designed to cover common upper, lower, bypass, and heater hose applications.