This fitting solves a problem Ecotec and other engines have faced for some time: how do I attach an attractive, effective AN-style fitting to my valve cover breather?
Until now, your choices were limited. You would either use a hose-clamp style fitting that looks cheezy, or you'd remove the valve cover, extract the stock hose nipple, and machine a threaded port to accept a standard AN fitting.
We've made it almost too easy. This fitting installs directly onto the 12mm hose connection, and cranks down securely with a threaded collar. Installation takes all of one minute...no need to remove valve cover for modification. It won't leak, won't come loose, and offers a -8 flare connection which will accept your breather or catch can hose. Fits any 12 mm breather hose connection. Looks great, and works great too!
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