20 041 18-S 20 041 13-s Gasket, 20-853-33-S Carburetor for Kohler Courage SV Series SV470 SV530 SV540 SV541 SV590 SV591 SV600 SV601 SV610 SV620 Engine Lawn Mower Tractor

What It Is

This is an aftermarket carburetor assembly (with gaskets) designed to replace the OEM Kohler 20 041 18-S, 20 041 13-S, or 20-853-33-S on Kohler Courage SV Series engines. It delivers the fuel-air mixture to the cylinder and is a direct bolt-on replacement for engines used in lawn tractors, zero-turns, and riding mowers.

Fitment & Compatibility

Before buying, verify your engine model exactly: Kohler Courage SV470, SV530, SV540, SV541, SV590, SV591, SV600, SV601, SV610, or SV620. Look for the engine model number stamped on the valve cover or blower housing (not the mower brand). This carburetor will not fit older Kohler Command or single-cylinder Courage models (e.g., SV710/730/735 or SV720/740). It includes the bowl gasket and mounting gasket, but you may need to reuse your original air filter assembly and fuel line. Check that your mower’s throttle linkage matches the carb’s lever style (some aftermarket versions have slightly different pivot points).

Key Things to Know

• Quality variability: These aftermarket carbs often work well, but some have reported sticky float needles or slightly lean jetting. Cleaning the carb before install can help.
• Installation difficulty: Moderate. Expect 30–60 minutes. You’ll need to remove the air filter housing, unhook fuel and throttle cables, and swap the carb. Keep the old mounting gasket as a template.
• Common gotchas: The fuel line may be too short or the wrong diameter—have a small piece of 5/16” fuel line and clamps on hand. Also, the choke linkage may need minor bending to align properly.
• Not a genuine Kohler part: If you need exact OEM fit and warranty coverage, stick with the original Kohler part. This aftermarket version is fine for budget repairs or older machines.

Should You Buy It

Buy this if you have a Kohler Courage SV-series engine with a dead or clogged carburetor and want a cost-effective fix under $20. It’s ideal for DIYers who can handle basic linkage adjustments and don’t mind a slightly lower build quality than OEM. Skip it if you need guaranteed exact fit, a long warranty, or if your engine model isn’t in the SV470–SV620 range.