Kohler 12 559 02-S

Kohler OEM Fuel Pump 12 559 02-S

Restore dependable fuel delivery with this genuine OEM Kohler fuel pump. The Kohler 12 559 02-S is designed for select Kohler Command Single-Cylinder engines equipped with pump-fed fuel systems. This mechanical pulse fuel pump provides a consistent supply of fuel from the tank to the carburetor, helping ensure reliable starting, smooth operation, and consistent engine performance.

Note: This fuel pump is intended for pump-fed applications only. It is not used on engines equipped with a gravity-fed fuel system.

✔ Genuine OEM Kohler
✔ Designed for select Kohler Command Single-Cylinder engines
✔ For pump-fed fuel systems only (not gravity-fed)
✔ Delivers consistent fuel flow to the carburetor
✔ Helps improve starting, idle quality, and overall engine performance
✔ Exact fit replacement — no modifications needed

What's Included:

(1) Fuel Pump — Kohler 12 559 02-S

Fits Select Kohler Command Single-Cylinder Engine Models

Compatible with select Kohler Command Single-Cylinder engines requiring a pulse-operated fuel pump.

(Always verify compatibility using your engine model, specification number, and serial number.)

Not Sure if This Fits Your Engine?

Use your Engine Model Lookup Tool or locate the model, specification, and serial numbers on your engine to confirm compatibility before ordering.

Why This Part Matters

A failing fuel pump can cause a variety of engine performance problems, including:

• Hard starting or no start
• Engine cranks but won't continue running
• Engine surging or sputtering
• Loss of power under load
• Engine stalls due to fuel starvation

In some cases, a failed fuel pump can create more serious problems:

• The fuel pump stops pumping fuel, causing the engine to starve for fuel and eventually stall or fail to start.
• The internal diaphragm ruptures, allowing gasoline to leak into the crankcase. This can dilute the engine oil, causing the oil level to rise, producing white smoke from the exhaust, reducing lubrication, and potentially leading to severe engine damage if not repaired promptly.

Replacing a worn or leaking fuel pump restores proper fuel delivery and helps protect your engine from fuel contamination and premature wear.

Additional Notes:

This genuine Kohler OEM fuel pump is manufactured to factory specifications for dependable fit, performance, and long-lasting durability. It is designed specifically for pump-fed Kohler Command Single-Cylinder engines and should not be used on engines equipped with gravity-fed fuel systems. Always verify your engine model, specification number, and fuel system configuration before purchasing.