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by samiam44
I'm truly surprised no one has called Mahle in NC and ordered up 50. Then you can send them one of their pistons (new) and say I need something just like this except MolyKote coated side skirts. Always wondered about the obsoleted Alcoa forging too- if Alcoa germany still has the mold.... or if it was Kohler property.
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There may have been millions of pistons made......not all were for a K341 engine. Set up cost plus material and labor will have the cost of a piston ip to $80 to $125 each. I don't have an extra $5000 laying around to buy a few pistons.
Next thing is how many do you make at standard, .010, .020 and .030 over? Mahle or anyone machining a part has to have Kohler permission to make copies of a Kohler piston. Same with the connecting rod.
I rebuilt a K-241 for someone this spring. new exhaust valve cost me $28.56. New .010 over pistion cost $88.90 at my local NAPA store.
I ran a Mahle piston in a K321 engine. It lasted about a year. There was too much clearance in the piston skirt area. The piston skirt created excessive wear in the cylinder wall where the skirt hit the cylinder wall. I did contact Mahle when the engine was built. They said the clearance was ok.
Check with your local NAPA store. They may be able to get you a better price than the online stores have.