40HP 2-Cylinder (13 Spline) 1984-1998
40HP 4-Stroke (13 Spline) 1999-2003
40HP E-Tec (13 Spline) 2004-2010
40HP E-Tec (13 Spline) 2011-2014
40HP E-Tec (13 Spline) 2015-2020
Solas