Genuine Subaru Rocker Cover Gasket KitStop the Seep. Protect Your Coils. If you own an EJ series Subaru, you know the smell: burning oil hitting a hot header. It usually starts as a faint scent at the traffic lights and ends with oil soaked spark plug leads and a messy driveway. The factory rocker cover gaskets eventually heat cycle and harden, losing their ability to seal. At Roo Racing, we dont believe in "near enough" aftermarket rubber that shrinks after six months. This Genuine