Mercury - Engine Oil Dipstick V8 Series Yellow-Handle Steel Assembly 861942T9. OverviewThere's something reassuring about pulling an oil dipstick and knowing instantly where your engine stands. No guessing, no hoping-just a clear reading that keeps your day on the water moving smoothly. The Mercury Marine part number 861942T9 Oil Dipstick brings that kind of confidence to every pre-launch check and mid-season inspection. Whether you're firing up a V8 after storage or easing back into the marina