https://www.google.co.uk/search?q=4efte+knock+sensor&client=ms-android-hms-vf-gb&source=android-browser&source=lnms&tbm=isch&sa=X&ei=n4aQUryAJoGshQesuYDgCA&ved=0CAgQ_AUoAA&biw=360&bih=592#biv=i%7C5%3Bd%7CmrU1njIOg4sfrM%3A
Take a look at that if you dont believe me. I bought a brand new one for...