Following list of new kohler K series aftermarket engine parts [1] k341 16hp std used OEM piston with new rings 40$ [3] .010 rods can work in k 301 [12hp] k 321 [14hp] 60$ for all or 25$ each [1] k321 [14hp] .020 set of piston rings 20$ [1] . k321 [14hp] .010 piston with rings 40$ All are quality aftermarket new never been used kohler internal engine rebuild parts