Fits my dc integra non vtec injectors. If you have old stuck micro filters, use a screw to grab into the filter then pull it out. The old caps for the tip of the injectors were dried. I used a vice grip and lightly clamped it. Then twist and pull off. Some cracked. If you break it into pieces, use a needle nose plier, very small flat screw driver, or dental pick to get all the pieces out. Just be very careful not to damage the tip/jet of the injector. To install the new tip caps, insert the as much as you can. Then take a small socket that is the same size as the cap. Tap on the socket with a hammer to tap the cap onto the injectors.