Std Connecting Rod 47-067-09-S Fits Kohler K301 K321

Standard size connecting rod that fits the Kohler K301 12HP and K321 14HP cast iron engines and the M12 and M14 built on the same blocks. Replaces part numbers 47-067-09-S and 45-067-24-S, also cross-referenced as 45-067-09-S and 237344. This is the standard big end size, intended for a crankshaft whose rod journal has not been reground. Engines with a journal turned .010 undersize require the matching undersize rod, so measure the journal before ordering. The K301 and K321 differ in bore, 3.375 inch against 3.500 inch, but share the same 3.250 inch stroke and the same connecting rod. Torque the rod bolts to the figures in your engine manual and check rod side clearance on assembly. After a rod failure, clean the oil passages and sump thoroughly before running the engine.

• FITS KOHLER K301 12HP AND K321 14HP cast iron engines, and the M12 and M14 versions of the same blocks. Replaces 47-067-09-S and the later 45-067-24-S. Also sold under 45-067-09-S. A spun or knocking rod on these engines usually follows low oil, a plugged oil passage, or long running at an angle on a hillside.
• STANDARD SIZE ONLY. This rod has a standard big end, sized for a crankshaft rod journal that has never been reground. If your crank has been turned .010 under, you need the .010 undersize rod instead and this one will be loose on the journal. Measure the rod journal with a micrometer before ordering. Guessing here destroys the crankshaft.
• KNOW YOUR PART NUMBERS. 47-067-09-S was used on earlier blocks and 45-067-24-S on later ones. They serve the same purpose and both are standard size. If your parts diagram shows either number, or the older cross-reference 237344, this is the rod for the job.
• K301 AND K321 SHARE THE ROD, NOT THE BORE. The K301 is 3.375 inch bore and the K321 is 3.500 inch, but both use the same 3.250 inch stroke and the same connecting rod. That is why one rod covers both engines. Do not read it the other way around and assume the pistons interchange, because they do not.
• DO THE JOB PROPERLY. Fit the rod with the oil dipper facing the right way, torque the rod bolts to your engine manual in two stages, and check the rod side clearance once it is down. Look at the crank journal for scoring while you have it open. A rod failure that left metal in the crankcase means the oil passages and the sump need cleaning out before the engine runs again.