Description
When your zero turn mower starts running rough or struggling to fire up, the spark plug is usually the culprit. This genuine spark plug is designed specifically for the Kohler KS590 19HP engine, ensuring you get clean ignition and smooth operation every time you pull the cord. A fresh plug makes all the difference between a mower that starts on the first pull and one that leaves you yanking the rope all morning.
What You're Getting
- Exact fit for Kohler KS590 engines - no guessing or adapters needed
- Premium construction that handles the heat and vibration of commercial mowing
- Proper gap and heat range engineered specifically for this engine
- OEM-quality materials that resist fouling and wear
Built for Real Mowing Work
This spark plug fits the Kohler KS590 541cc engine found on Bad Boy MZ and MZ Magnum zero turn mowers. Whether you're cutting residential lawns or maintaining commercial properties, this 19HP engine delivers the power you need for professional results. The KS590 is known for its reliable performance in demanding mowing applications.
Made to Last
Commercial mowing puts spark plugs through the wringer with constant starts, stops, and varying loads. This plug is built to handle those conditions with electrode materials that resist wear and a ceramic insulator that won't crack under temperature swings. You'll get consistent performance season after season.
Good to Know
Replace your spark plug at the beginning of each season or every 100 hours of operation, whichever comes first. When installing, hand-tighten first, then snug with a wrench - overtightening can damage the threads. Keep a spare in your toolbox for quick field replacements.