Injector Nozzles designed for optimum fuel atomization (mist) for increased performance and fuel economy. 6Pcs For TT 2004 2005 2006 Fuel Injectors 0280157012 Car Accessories; The fuel injector is made of plastic +metal , function more consistent and smoother to account for extremes of cold temperatures, starting up; The function of fuel injector is to deliver the fuel precisely to the internal combustion of the engine, which is conducive to the adequate combustion of fuel and stabilises the engine performance； Fuel injectors promote smooth engine operation and balanced fuel delivery, replacement for your old or broken parts., Manufacturer: BEYEPZNZCK