Sorry wasn't the Vauxcentre now I remember it was on line from MicksGarage in Dublin. Was supplied to him by Quinton Hazell
Copy & paste of online chat with said garage.
robert:
Hi, Is 87048 Camshaft Position Sensor for Omega 2.2 a genuine OEM part or aftermarket
Call accepted by operator Colin. Currently in room: Colin.
Colin:
Hi Robert.
Colin:
Let me look into that for you, just a moment please.
Colin:
Can you let me know your license plate / registration number and I will look it up for you?
robert:
**** ***
Colin:
Let me look into that for you, just a moment please.
Colin:
This item, from a company called Meat and Doria, could well contain a Bosch sensor in it, however I cannot tell you this for certain. It would be however up to the standards and specifications as laid down by GM.
robert:
OK thanks.
So it`s not a genuine part, and if you read their FAQ you will find
Frequently Asked Questions
Please note we do not sell Genuine parts (i.e main dealer parts) and that all references to Car marques & cars are solely for identification purposes only.
Think that answers your question as to whether you have a genuine cam sensor.