Mercury - Oil Dipstick 5.7L V10 Verado Series Stainless Steel Part Number 8M0220900. Overview. There's a certain comfort that comes from knowing the heart of your engine is looked after, even before you turn the key. This Mercury Marine part brings that same steady confidence every time you pull it from the tube. When you're heading out before sunrise or easing your way back to the dock after a long day on the water, you want a part you don't have to second-guess. This dipstick gives you that pe