Tuning levels on the Focus RS & ST have pushed the standard Ford oil filter housing to its limit, with the fagile diaphragm inside these housings splitting and also leaking due to the clip on design, a upgraded breather system was required, the AS Performance 2 pce breather kit ticks all the boxes and more...
The AS Performance 2 piece breather kit includes the following
Exchange - £445.95 we require your old oil filter housing before sending 2 piece breather kit.Once you have purchased, a kit will be allocated for you, when we have received your old ford oil filter housing we can send your new 2 piece AS breather kit
Outright - £595.95 you will receive full kit & if you wish to return your old oil filter housing we will refund you £149. This is good for international customers that can't send their old unit back & customers that wish to fit first and then return after installation