Autotecnica FD0712939 Engine Coolant Thermostat / Water Inlet Assembly

Engine Coolant Thermostat Assembly for Ford and Mazda

Autotecnica FD0712939 is an engine coolant thermostat / water inlet assembly built for direct replacement on select Ford and Mazda applications. It uses a MAP-controlled design with a high-flow OE-style layout to support stable engine temperature control and reliable coolant routing.

• MAP controlled thermostat assembly
• OE-style high-flow design for consistent cooling performance
• Factory-style housing dimensions for bolt-on installation
• Plastic housing with black finish
• Opening temperature: 110
• Temperature sensor not included
• Gasket or seal not included
• Bleeder screw not included

Fitment Details

• Fits 2005-2011 Ford Focus, N/A
• Fits 2001-2003 Ford Ranger, N/A
• Fits 2001-2003 Mazda B2300, N/A
• Fits 2001 Ford F-100 Ranger, N/A

This Autotecnica FD0712939 thermostat housing assembly cross-references Dorman - OE Solutions 604-208 for the same application.

What It Helps Address

• Engine running too cool or too hot
• Coolant flow issues caused by a worn thermostat housing
• Leaks from a warped or cracked plastic housing
• Improper temperature regulation in Ford Focus, Ford Ranger, and Mazda B2300 cooling systems
• Hard-to-match replacement housing dimensions during service work

Installation Notes

Verify vehicle fitment by year, make, and model before installation. This assembly is built to factory housing dimensions for direct bolt-on replacement, but the gasket or seal is not included. Confirm hose routing, sensor transfer requirements, and cooling system condition before refilling and bleeding the system.

Quality Assurance

Autotecnica manufactures this thermostat housing assembly from temperature-stable plastic to help resist warping and cracking under heat cycling. Part number FD0712939 is backed by a 24 Month Unlimited Mileage Warranty.