I have a BMC carbon cylinder thingy, but looking at the oil breather filter, it's fooked. Don't know how long it's been on there, as it was fitted by previous owner.

Can anyone shed some light on what replacement size it is? What have you got?

Lots to choose from on eBay from £5.99, but unsure on bore size. The one I've taken off looks around 20-25mm, and the ones I've seen are 9-14mm.

I was looking into this before I modded my airbox iirc they are 25mm. This is my memory we're talking about though so double check the internal of the pipe. There was also plenty of choice in this size on the bay for the kind of price you mention. There were some quite smart looking ones too.

Are u on about the pipe that goes to the secondary air pump? If so I've got a filter that came with my remain kit. Fits straight on comes with the jubilee clip too. Pm if your interested.

Are u on about the pipe that goes to the secondary air pump? If so I've got a filter that came with my remain kit. Fits straight on comes with the jubilee clip too. Pm if your interested.

Not sure. It's the pipe that would have gone into the standard air box, but not the intake pipe.

Will get a picture up shortly

I think it is the SAI pipe as it has to go somewhere and can't go into the aftermarket CAI.

^ What he said

Yup I have a filter if your still after one In that case. It's a foam looking one.away for a few days now but can take a pic of it if your interested when I get home.

I love it when a plan comes together

Yup I have a filter if your still after one In that case. It's a foam looking one.away for a few days now but can take a pic of it if your interested when I get home.

Thanks mate, but need it asap, and these are cheap enough on flea-bay

http://www.ebay.co.uk/itm/AUDI-OIL-MINI-BREATHER-AIR-FILTER-FUEL-CRANKCASE-ENGINE-CAR-BIKE-RED-/281560776068?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item418e547d84

OK mate no worries.