You could have bought a genuine GM one for similar money/effort.
The latest one is a different part number to the one acquired, which suggests a revision of the part.
You can buy genuine parts but you need to be prepared to work to locate them. I gave you all the information you needed for the crank sensor and you threw it back in my face. So if my comments seem acidic, consider why.
I know that DG, but I have not got the time or can be bothered to hunt around to save a few quid every time I go to service my Omega. That is why I deal with my trusted Vx dealer who I know will sort out any problems I may have with parts they supply, and sometimes fit (like the a/c compressor unit that went wrong after just over two years and their general manager, who I know well now, agreeing to refund almost £1,000). For me it is about time and trust.
It is a personal thing to decide what to buy and where from, but I DO welcome advise from you DG and all others here on the OOF. That is why I stay as a member. Sometimes though you do react strangely with me, and others, when they seem not to want to follow your advise. I am sorry that you are offended by this, but I am my own woman and away from any man telling me what to do. That's just how it is.
BUT, let us BOTH stop having a pop at each other now and act like mature adults. In so many posts I have made in General Chat, and even when I escape to here in the true motoring sections, you appear to have a dig on what I have said, nick picking on everywhere word, every phrase, or me just being me! But, there is no need for that, or indeed for some of
my responses!
I am not perfect, nor are you, or anyone else in the whole World. We have all got our flaws, faults, as well as strengths within the knowledge we have, although having the ability to wind others up! As I have said many times, in many posts, there are times when we should all live and let live. So let us BOTH bury the hatchet and in a Christmas spirit of peace just get on.