A leaking valve cover can be a total mess, and your rubber half moons gave up the ghost long ago. The aftermarket gaskets are wrong in so many ways. OE valve cover gasket and our billet aluminum half moon seals that are good for the life of the truck. Yours is leaking at the back of the head, where you can't see it, down the side of the block to the trans. Fix it.
KIT #1 includes our half moons and an OE valve cover gasket. OUT OF STOCK FOR THE TIME BEING UNTIL OUR CNC CATCHES UP