Carburetor for Kohler SH265 6.5 HP Series 3000 196cc Engine with Air Fiter Replace 18 853 16-S, 18 853 05-S, 18 853 06-S, 18 853 12-S

What It Is

This is a complete bolt-on carburetor assembly for Kohler SH265 6.5 HP Series 3000 196cc engines—common on push mowers, pressure washers, and small generators. It replaces the stock carburetor and includes an air filter, fuel lines, gaskets, and a primer bulb.

Fitment & Compatibility

• Direct OEM replacement for Kohler part numbers 18 853 16-S, 18 853 05-S, 18 853 06-S, and 18 853 12-S.
• Engine check: Confirm your engine is a Kohler SH265 (look for stamped model number on the engine shroud or valve cover). This carb works only with the Series 3000 196cc variant.
• Machine compatibility: Fits most mower brands using that engine (Troy-Bilt, Cub Cadet, Husqvarna, Craftsman). Measure deck size isn’t needed—engine model is the only fitment factor.
• Aftermarket note: This is a non-OEM carb. It matches the original dimensions, but the fuel inlet angle may be slightly different on some batches. Verify the fuel line routing before tightening.

Key Things to Know

• Quality: Good for the price, but the included air filter is basic. Consider swapping it for a genuine Kohler filter if your mower sees heavy use or dusty conditions.
• Installation difficulty: Easy. Remove the old carb (two bolts, fuel line, and throttle linkage), transfer the spring and governor arm, and bolt on the new one. Expect 20–30 minutes.
• Common gotcha: The primer bulb can be stiff at first. Prime 3–4 times before starting. If it doesn’t pump fuel, check that the fuel line is fully seated and not kinked.
• Tuning: The carb comes preset. Only adjust the idle mixture screw if the engine hunts or stalls after warm-up—turn it 1/8 turn at a time.

Should You Buy It

If your Kohler SH265 engine runs rough, won’t start, or leaks fuel, this is a cost-effective fix—especially if you’ve already cleaned the old carb without success. It’s not for pro landscapers who need OEM reliability, but for homeowners with a single mower, it’s a solid budget option that usually works out of the box.