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One clarification - the wiring in the harness is the same as ZHP (different than MS43), however, there are two differences:
1. Clips for screwing the harness housing to the M56 valve cover
2. The...

I strongly recommend against removing the cap unless you must. It ALWAYS breaks. Some have heated the head (usually by installing it and driving it for a while) and had some success removing it. I am...

Simple Green soak:
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If you pick up the M56 hose, it is very easy to harvest the connectors:
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I have done this:

1. I soak the inside with simple green. It would be smarter to use simple green extreme, but the green stuff cleans it up. I wouldn't remove the inner cover. Cap the hose...