When selecting piston kits make sure you select the correct design on all K Series and Magnum engines.
There are 2 basic designs, the Old Style piston and the New Style (Mahle) piston. If you have the Old Style piston and you are Not replacing the rod you have to stay with the Old Style piston design. If you want to upgrade to the better New Style (Mahle) piston you can but you have to also replace the rod with the New Style rod. The Mahle style piston skirt profile was modified to provide a better fit within the cylinder bore. The ring channels were redesigned and the wrist pin was strengthened. A different connecting rod is required because of the extensive design changes. Beware of shops selling the aftermarket "rebuild kits" more then likely these are imports. These parts in many cases will not inter-change with genuine Kohler parts, example aftermarket rings will not fit in genuine Kohler pistons. They are also selling the old style piston design, further they are also claiming "It's what the rebuilders use". In my 30 plus years in the power equipment industry I have never heard of the term "rebuilders" in the small engine business unless they may be referring to backyard mechanics that are using aftermarket internal engine parts. You may be saving in price but not Quality.
I have a 27hp Command on my Cub Cadet. It was misfiring and the carburetor needed to be rebuilt. I knew that because I forgot to winterize it. Great... Read More ->
Needed a replacement carburetor for my John Deere STX38. OPE found one for my old mower and shipped it to me in recorded time and at a better price... Read More ->
I called your company looking for a Kohler 25 hp engine for one of our mowers. I could not find a good price anywhere in the country until I call... Read More ->
Been fiddling with the carb on my old Gravely's Kohler Magnum engine for 2 years, and I finally changed the fuel pump. She runs like new! OPEengines... Read More ->
Great company. They seem to carry everything related to Kohler engines. Submitted order on Saturday and received same the following Monday. Extremely... Read More ->