SHAFT SIZE: (D x L). 1-1/8" X 3-7/8" (To mounting base on crankcase cover). Many different horizontal shaft engines that use the same shaft size. Does not include air breather, Only what is shown. The item "22.1HP GXV690 TAF Honda Vertical Shaft Twin Cylinder Engine 1-1/8x3-7/8 -H4" is in sale since Thursday, December 3, 2020. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Outdoor Power Equipment\Multi-Purpose Engines". The seller is "smallenginesforless" and is located in Albany, Indiana. This item can be shipped to United States.