16-853-19S Carburetor Carb Replacement for Kohler 7000 Series Engine KT725 KT730 KT735 KT740 KT745 Engine with Fuel Pump, Replaces 32-853-63S 32-853-67S (Carburetor)

What It Is

This is a complete aftermarket carburetor assembly with an integrated fuel pump, designed to replace the original carburetor on Kohler 7000 Series KT engines (KT725, KT730, KT735, KT740, KT745). It’s intended for residential or commercial riding mowers, zero-turn mowers, and tractors using these engines.

Fitment & Compatibility

• Engine series only: Fits Kohler 7000 Series KT engines listed above. Does not fit other Kohler series (e.g., Courage, Command, or 6000 Series).
• OEM replacements: Directly replaces Kohler part numbers 32-853-63S and 32-853-67S. If your mower uses one of these, this is a drop-in swap.
• Check your engine model: Look for a stamped metal tag on the engine valve cover or blower housing. Confirm it starts with “KT” followed by the exact number (e.g., KT725).
• Physical fit: The carburetor has a standard mounting flange and fuel inlet. Measure the distance between mounting holes (typically 2.5” center-to-center) and verify the throttle/choke linkage style matches your old unit. Most 7000 Series engines share the same bolt pattern.
• Deck size irrelevant: Deck size does not affect compatibility—only the engine model matters.

Key Things to Know

• Quality vs. OEM: This is an aftermarket part, not Kohler-branded. It’s functional and cost-effective, but may have slightly different jetting or gasket thickness. Expect it to work reliably for most users, but not identical to OEM in materials.
• Installation difficulty: Moderate. You’ll need basic hand tools (screwdrivers, socket set) and patience with small springs and linkage clips. No special skills required, but take photos of the old carb before removal.
• Fuel pump integration: The built-in fuel pump eliminates the need for a separate pump. Ensure your fuel line is in good condition and the pulse line (from engine crankcase) is connected securely.
• Common gotcha: The gasket between carb and intake manifold may be thin or misaligned. Use a thin layer of gasket sealant or replace with a new OEM gasket if needed. Also, the throttle/governor spring hook is fragile—handle gently.

Should You Buy It

If your Kohler 7000 Series engine has a clogged, leaking, or non-functioning carburetor and you want a quick, budget-friendly fix, this is a solid choice. It’s ideal for DIYers who don’t want to rebuild the original carb and prefer a complete replacement. Avoid if you need OEM-grade longevity or if your engine has a non-standard linkage setup.