I have a set of like new RC 550cc low impedance injectors with 3k miles of use. These came out of my 4G63, but I know these are cross-compatible with many of the Honda motors. They have all new seals including lower insulators and upper o-rings. If you need an injector resistor box to make these work, I do have a DSM resistor box I could add for extra. PM/email me with any questions and for pics. Thanks for the space.