E30 Zone

Hopefully someone can help me

I have been trying to find the reason that my M40 has been doing about 20mpg! on closer inspection i have a bad leak coming from the fuel hose that feeds into the bottom of the fuel filter from the fuel pipe under the car, all over hoses seem fine.

Which size hose is the replacement for this? as there is a 7.5mm a 8mm and a 9mm listed on GSF

Any help is much appreciated

find it on this site: www.realoem.com, should say ID

Thanks for the link above, i've managed to get the part number which is 16121180399, but i need to know the pipe size so that i can get a quick replacement from halfords to last the weekend

Does anyone have this info?

8mm, make sure the hose has 'unleaded' on it, if it doesnt its not suitable and will leak

Excellent, just bought some goodyear high pressure tubing from halfords at £4 a metre 8mm was perfect thanks.

Might as well replace the lot now i've started