Northstar
Member
I did a little checking on Kohler's website and found the difference between a Command and a Command Pro is the addition of an oil cooler, high performance spark plugs , larger air cleaner, 20 amp charging system, larger fuel filter and hardened crankshaft journels on the PRO series. My 2544 engine code is CH23S , which is the code for a PRO but the engine does not have the performance package that would make it a PRO, ie: oil cooler plugs ,larger air cleaner / fuel filter , etc. So I guess it is a 21HP Command that could be upgraded to a 23 HP PRO series . The only PRO part I think it would have is the hardened crankshaft journels.