For Chevrolet For Tracker 1999 2000 2001 2002 2003. Fuel injectors improve efficiency Accurate fuel quantity delivery not only ensures complete combustion of fuel, but also improves For engine efficiency while reducing harmful emissions. High-efficient fuel sprays and good Impedance Coils enable fast start-up in cold environments, low fuel consumption, and better performance. High-efficient fuel sprays and High Impedance Coils enable fast start-up in cold environments, low fuel consumption, and better performance. The injector nozzle is made of material, which enhances the accuracy and stability of fuel injection and ensures reliable working performance., Manufacturer: tusgt