The fuel injectors have been 100% tested by ASNU equipment and exactly match the internal coil resistance and Pressure/Leak tested, Spray/Flow Tested. Note: Pls compare your original part with our product display pictures, make sure they have the same OE number, same pattern and shape, and also in our copmatiblility list. Any returning or exchanging item must be in sound condition and we do not accept any used or worn product. And accessories for all types of cars, trucks, ATV, UTV and motorcycles.