Hi, I had to get a specialist to remove it as it had seized in. The guy was able to remove it and redo the threads and install the new one. I did the striping out to give access to it which was on the battery side so all that has to come out to get access to it. If you can talk to anyone who can remove seized injectors etc they might be able to do it. Also as noted above you may need to replace the blown 50Amp fuse in the engine bay. Once done never had issue with them since.