Carburetor for Kohler CV18S CV20S CV21 CV22S CV725 Command Engine Carb 2485319-S 2485325-S 2405350-S 2485350-S Mower with Air Filter Fuel Pump

What It Is

This is a complete carburetor assembly for Kohler Command series V-twin engines (CV18S through CV725). It replaces OEM part numbers 2485319-S, 2485325-S, 2405350-S, and 2485350-S. Includes carb, air filter, fuel pump, gaskets, and fuel line—designed for riding mowers, zero-turns, and heavy-duty lawn tractors.

Fitment & Compatibility

• Engines: Kohler Command CV18S, CV20S, CV21, CV22S, CV725 (horizontal shaft only; vertical shaft models use different carb)
• Deck size: Not a factor—fit is engine-specific. Works on 42” to 72” decks depending on the mower brand.
• OEM vs aftermarket: This is a non-OEM replacement. Gaskets and fuel pump may vary slightly from OEM specs. Check that your mounting studs align with the carb flange (two-bolt pattern, 60mm center-to-center).
• Before buying: Confirm your engine model number (stamped on blower housing or valve cover). Remove old carb and compare gasket shape, fuel inlet orientation (left or right), and choke linkage style. Some models use a manual choke; others use an electric solenoid—verify yours.

Key Things to Know

• Quality: Good value for the price, but fuel pump diaphragms may stiffen over time. Expect to replace the pump in 1-2 seasons if you use ethanol-blended fuel.
• Installation difficulty: Moderate. You’ll need basic tools (wrenches, screwdrivers) and patience with throttle/choke linkage. No special tuning required—it’s pre-set from the factory.
• Common gotcha: The included air filter may not fit all air box housings. Reuse your original filter if the new one is too tall or too short. Also, the fuel line supplied is typically thin-walled—substitute with 1/4” or 5/16” rubber fuel line if it kinks.
• Tuning: If the engine runs lean (surging at idle), adjust the idle mixture screw 1/8 turn counterclockwise. If it floods, check float height (should be parallel to carb body).

Should You Buy It

If your Kohler Command engine is surging, hard-starting, or leaking fuel from the carb, this kit is a cost-effective fix—especially if you’re comfortable with basic engine work. It’s not OEM, but for $46 it saves you from buying a $150+ genuine carb. Skip it if you want exact factory fit or need a carb for a vertical-shaft Kohler.