Improve engine response speed and enhance vehicle functionality. Reduce the load on the engine oil pump and extend its service life. For SUZUKI for ALTO ,Material:Plastic + Metal,Porous fuel injectors allow quick starts in cold environments. Reduced flow fluctuations for precise fuel control. Package Contents: 4 X Nozzle Injector ,Cleans and protects the entire fuel system,Recoveries: lost power, acceleration, fuel economy and fuel gauge sensor operation. High-efficiency combustion ensures complete fuel combustion, and high-quality and durable materials ensure you don't need to replace the fuel injector frequently, which also means you can save on costs., Manufacturer: HJKDSZ