47 083 03-S 47 883 03-S1 Air Filter for K301 K321 K361 CH20 CV20S CH23 CH18 CH730-CH740 Command Engine Lawn Mower Replace 47 083 03-S1 KH-47-883-03-S1 4708303

What It Is

This is a dual-element foam-and-paper air filter designed for Kohler Courage, Command, and Command Pro engines (K301, K321, K361, CH20, CV20S, CH23, CH18, CH730–CH740). It replaces OEM part numbers 47 083 03-S, 47 883 03-S1, and KH-47-883-03-S1, ensuring clean airflow to the carburetor on lawn tractors, zero-turns, and commercial mowers.

Fitment & Compatibility

Before buying, confirm your engine model (e.g., K301, CH20) via the engine shroud or manual—not the mower brand. This filter fits Kohler single-cylinder K-series and V-twin Command/Command Pro engines with a rectangular air box (approx. 5.25” x 4.5” x 1.5”). It does not fit Kohler Courage 7000 series or engines with round air filters. Measure your existing filter’s length and width; if it’s within 0.25” of those dimensions, it will work. Avoid generic “universal” filters—this one is a direct replacement.

Key Things to Know

• Quality vs. OEM: Aftermarket version at $9.88 vs. $15–20 OEM. Foam pre-filter is slightly thinner than Kohler’s, but paper element is adequate for residential use.
• Installation: Takes 5 minutes—remove air box cover, swap filter, reinstall. No tools needed. Ensure the foam side faces the engine intake (pre-filter), paper side outward.
• Common gotcha: Do not oil the foam element—it’s pre-oiled. Over-oiling can clog the carburetor. Check the gasket on the air box; if cracked, replace it separately (part 24 083 10-S).
• Change interval: Every 100 hours or annually, sooner if mowing in dusty conditions. A dirty filter reduces power and fuel efficiency.

Should You Buy It

Buy this if you have a Kohler K-series or Command engine (listed above) and want a cheap, reliable replacement for residential mowing. It’s not for heavy commercial use (foam degrades faster), but at $9.88 it’s a solid value for homeowners who change filters yearly.