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[YZ250]

Daughters 2010 Corsa 1.4 petrol has developed a misfire and when I read the codes I get P0304, misfire on cylinder No.4.
It's only done just over 20K but it would appear that this model year was particularly prone to coil pack failure, many of them going way within the warranty period. I've replaced the plugs as a precaution and fired the injectors so fairly sure the coil pack is the issue.
Piece of cake to do and can be replaced in under two minutes but I have a question to those with access to Vauxhall info.
On inspection, I notice that the current coil pack is Delphi (I was expecting to see Bosch).
I also note the words 'OK' written on it, implying that it has either been tested or came off a breaker. As I said, a bit of googling implies that some were changed within the first year.

My question is, does anyone know if Delphi was original fit, as when I do a search Delphi comes up as OE?
Thanks for any input as usual. 

[Marks DTM Calib]

Yep Delphi were original fit 

[YZ250]

Yep Delphi were original fit 

Thanks Mark. 

[andyc]

Handed out one today in the workshop so I had a quick look. They are Delphi and the one that came off the car had a blue'ish "ok" stamp on it, the new one didn't have the stamp, hope that helps

Andy

[YZ250]

Handed out one today in the workshop so I had a quick look. They are Delphi and the one that came off the car had a blue'ish "ok" stamp on it, the new one didn't have the stamp, hope that helps

Andy

Cheers for that Andy. 
I bought a new one today and the parts counter guy said they'd had so many issues with them that they'd had to upgrade them. The part number has changed as well so I've now fitted the later part.
Yep, same as with the blue'ish "ok" on the old one but not on the new one.