We are by far the best value. They go on mowers and pulling tractors all over the world! This is for ALL the K301 and M12 Kohler engines, which means that it will fit all the K301s regaurdless of the suffix. I will beat anyones price. CUSTOMIZED TO MEET YOUR ENGINE REBUILD NEEDS…. KIT INCLUDES THE FOLLOWING. 1- New Piston: PISTON COMES IN : Standard. 030 over, Chrome Piston Rings. Wrist pin and Keepers. CONNECTING ROD COMES IN : Standard, or. We also have in. Intake Valve 1.372. Exhaust Value 1.125. Kohler engine rebuilding manual , no one else gives you this but me! 12hp K301 These measurements are not for machine shop referance. The machine shop must have the new piston before they can bore the cylinder. 1.500 You get a std or. If you want a. If you ask for a. 020 rod and do not pay for it, I will send a. 010……………………………….1.490. No more, No less. Anybody can Rebuild a Kohler engine themselves. Kohler INSTRUCTION manual ON HOW TO REBUILD YOUR KOHLER ENGINE. I will also give the instructions on how to properly install your connecting rod. (Oil hole goes towards the cam). The most common reason for premature engine failure on your rebuilt engine is an improper rod installation. In my other auctions, I also offer high Quality, cost saving tools and other COMPLETE Engine Rebuild, Refresh Engine Rebuild Kits to rebuild your own engine, so please check out my other auctions for tools, lawn, tractor seats and other rebuild kits. 020 connecting rod in place of the std or. Be sure to add me to your favorites list. Get Vendio Gallery – Now FREE! Try the all-New Andale Gallery. Now with “Smart” Features. The item “MASTER REBUILD KIT FOR 12HP Kohler, K301 Valves+ tune up” is in sale since Thursday, January 17, 2013. This item is in the category “Home & Garden\Yard, Garden & Outdoor Living\Lawnmowers\Parts & Accessories”. The seller is “bakt4kids” and is located in Wauseon, Ohio. This item can be shipped worldwide.