Jabsco Boat Engine Marine Oil Drain Pump The Jabsco Boat Engine Marine Oil Drain Pump features intake and discharge caps, high-quality oil resistant plungers and long-life brass cylinders. This pump is perfect for any situation where draining is difficult and is the perfect way to speed up your oil change. This polished brass marine oil change pump connects directly to the engine oil dipstick tube on popular marine engines such as OMC and Mercruiser. With 40 strokes to 1 gallon and simple one-ha