One New Aftermarket Replacement 12HP Piston and Ring Set for Kohler K301 / M12 Engines
This aftermarket replacement piston and ring set is designed for the Kohler K301 and M12 (Magnum) 12HP cast iron single-cylinder engines. The kit fits the internal cylinder bore assembly and is an essential component for engine rebuilds and overhaul jobs on these popular K-Series engines. Includes piston, rings (Rotary 2472), wrist pin, and wrist pin retainer clips. Standard (STD) bore size only — measure your cylinder bore before ordering to confirm you do not need an oversize piston.
Specifications
- Piston Size: Standard (STD)
- Cylinder Bore Size: 3.375″
- Engine Output: 12 HP
- Includes: Piston, Rotary 2472 Ring Set, Wrist Pin, Wrist Pin Retainer Clips
- Ethanol compatibility: Not compatible with greater than 10% ethanol fuel
Serial Number Restriction
Important: This piston fits Kohler K301 and Gravely K301 engines before Serial No. 1730100013 and M12 (old style) engines only. Verify your engine serial number before ordering.
Compatible Models
Kohler K-Series and Magnum: K301, K301A, K301S, K301AS, K301Q, K301QS (before Serial No. 1730100013); M12 (old style)
Gravely: K301 (before Serial No. 1730100013); M12 (old style)
Replaces Part Number(s):
47-874-06-S, 47 874 06, 47 074 16, 47 074 16-S, 4787406, 4787406S, 4707416, 4707416S, 040995
Aftermarket Interchange Numbers
Fits Stens 515-239, Rotary 6749, Prime Line 7-03815, Sunbelt B1SB6749, Foley/PLP 163-360, ESF 163-360, Foley/Belsaw 5979373, Green Meadow P360, Laser 94231, NHC 266-8758, Fits Napa 7-03815, MFG Supply 23-6749
New aftermarket replacement part – not remanufactured, not used.
