Hi All,

I've posted this onto the previous brand thread also but I'm hoping that someone might read this 'new' thread if they've already read the other, just so that it isn't missed by any ignition experts out there:


Hi All,

I've got the same failure with this part and I need a replacement too. Now I read about this part failing on various web pages and I came across 2 part numbers (8D0 905 351 & 4D0 905 351) and quoted these numbers when speaking with my local Audi dealership. They confirmed that the one I needed for my A4 1.8T was the 8D0... item. Anyway, it turns out that mine should be fitted with the 4D0 item as mine was sold early that year!!!

I too have seen the Hucco part available much cheaper on the web but I've now got the Hitachi 8D0 item, which is also a 4 into 5 pin unit and looks very much the same. Can anyone confirm whether or not these 2 parts are interchangeable? If I go back to the dealership they will credit me the 8D0 part against the older 4D0 part, which is twice the price and about 3x the Hucco price, but I would hate to learn that the Hitachi unit was a better unit (less likely to fail) anyway. Any ideas?

Cheers,

AJW

Thanks in advance for any help you might be able to offer.