doesn't this replace number 5 http://www.ebay.co.uk/itm/SEAT-LEON-CUPRA-1-8T-20V-180-BHP-SILCONE-CRANKCASE-BREATHER-HOSE-AUM-AUQ-/160864074502?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item25743efb06#ht_1988wt_1037
Looks like it replaces 11,8,2 to me..........
better off fitting a catchcan
Wish i had of gone for the catch can now but thort this pipe would be much easiet and cheaper but it isnt going according to plan so far lol.