Replace Part Number: For Johnson/Evinrude #'s 5007420, 5007422 / For OMC part #4-7359 / For EMP part #1399-07359 Compatible with VRO Evinrude Johnson 90HP - 250HP V4 V6 Crossflow and Looper engines 90 degree angle cylinder block Fits V4 & V6 Crossflow And Looper Outboard Engines With 90° Angle Cylinder Block. Does Not Fit 60° Or 3 Cylinder Applications. Crossflow Engines Have Shaped Piston Tops, Looper Engines Have Flat Top Pistons Easy to install, but it's better to be installed by professionals Please do not hesitate to contact us with any questions, we will reply you in 24 hours Replace Part Number: For Johnson/Evinrude #'s 5007420, 5007422 For OMC part #4-7359 For EMP part #1399-07359 Interchange Part Number: Replaces For Volvo 5007420 Replaces For Volvo 5007422 Fits: V4 & V6 Crossflow And Looper Outboard Engines With 90° Angle Cylinder Block. Does Not Fit 60° Or 3 Cylinder Applications. Crossflow Engines Have Shaped Piston Tops, Looper Engines Have Flat Top Pistons. The 90° Motor Will Have A More Triangular Profile, While The 60° Motor Is More Rounded