If you're Kohler K Engine is giving off a bluish gray smoke it means you're burning oil and need to replace the rings and piston.
We offer High Quality Aftermarket Piston Kits for Kohler K Engines. Includes Piston, Piston Rings, Wrist Pin, Retainer Rings and Instructions. Comes in STD Size and Oversize. For Kohler K181, K241, K301, K321, and K341 Engines