Mercury MerCruiser Back Gasket 27-139376 / 13937 Mercury MerCruiser Sterndrive Parts & Accessories Viewer:223 Item No: 27-139376 / 13937 Fits: 75-125 HP 3 & L4-Cyl You May Also Be Interested In Nut 11-881314 1 Power Head Gasket Set 27-43779A87 Connecting Rod Kit CR118 Sleeve/Ring Kit 42461A1