Sierra International 18-3802 Marine Head Gasket for Johnson/Evinrude Outboard Motor Sierra Head Gasket Meets or exceeds the original equipment quality Sierra part number: 18-3802 Interchangeable with the following: GLM 34250, Evinrude/Johnson 335359, 327795, 320658, Mallory 9-63833 Fit specific, check part numbers to ensure proper fit