Gates 23570 Radiator Coolant Hose - Lower or Lower - Radiator To Thermostat

Gates Molded Coolant Hose for Mazda 3

The Gates 23570 molded coolant hose is a direct-fit radiator coolant hose for select Mazda 3 applications. Built with EPDM and plastic construction, it follows OEM-style routing and includes the molded branch design needed for the specified cooling system layout.

Compatible with 2004-2006 Mazda 3, lower; 2007-2009 Mazda 3, lower radiator to thermostat; and 2009 Mazda 3 Sport, lower radiator to thermostat. This Gates molded coolant hose 23570 is shaped for the factory hose path and connection points used on these vehicles.

Key Features

• Gates Molded Coolant Hose, part number 23570
• OE-style molded construction for specific Mazda cooling system routing
• EPDM and plastic materials for coolant hose service
• Branch-style modular hose design
• End 1 inside diameter: 1.25 in. (32 mm)
• End 2 inside diameter: 1.25 in. (32 mm)
• End 3 inside diameter: 0.82 in.
• Centerline length: 17.9 in. (455 mm)

Product Details

Gates is a recognized aftermarket supplier in the modular coolant hose segment, and the 23570 hose is built for applications that require integrated OE-style components rather than a universal cut-to-fit hose. The molded shape, branch configuration, and application-specific dimensions help match the original radiator-to-thermostat hose routing on select Mazda 3 and Mazda 3 Sport models. If you are replacing a worn or leaking lower coolant hose, Gates 23570 provides the correct formed layout for the listed vehicles.

This part cross-references Dayco 72314 for the same application.

Common Uses

• Replacing a cracked or softened lower radiator hose
• Repairing coolant leaks at the radiator-to-thermostat hose route
• Restoring factory-style hose routing on Mazda 3 cooling systems
• Addressing hose swelling, splitting, or age-related deterioration
• Correcting fitment issues caused by non-molded replacement hoses

Installation Notes

Verify the hose routing, end diameters, and branch layout against the original part before installation. Inspect adjoining clamps, thermostat housing, radiator necks, and nearby plastic fittings for wear or damage, and replace any compromised components during service. Proper coolant refill and system bleeding are important after hose replacement to help prevent air pockets.

Quality Assurance

Gates manufactures this molded coolant hose to application-specific specifications with OE-style integrated features for the listed Mazda fitments. Part number 23570 is built for direct replacement use in the confirmed applications above.