The product is a Mercury 884429A2 3.0L DFI 200 225 Fuel Rail Thermostat 884429A4 (port) NOS, OEM. It is a genuine Mercury part with manufacturer part number 884429A2 and is designed for use in inboard engines. The product includes a fuel rail thermostat and is new old stock (NOS).

COMPLETE FUEL RAIL, with injectors thermostat 

Mercury 884429A2 3.0l DFI 200 225 Fuel Rail Thermostat 884429A4 (port) NOS, OEM

MERCURY 804528 FUEL INJECTORS 8M0222157

Comes as pictured