1PZ Carburetor for Kohler Magnum & KT Engines UMK-301 - Direct-Fit Complete Assembly (17-20 HP)

If your Kohler-powered mower or equipment is running rough, flooding, or hard to start, a faulty carburetor is often the cause. The 1PZ UMK-301 is supplied as a full carburetor set that matches common Kohler part references 52 053 09, 52 053 18, and 52 053 28, giving you a ready-to-install replacement without rebuilding the old unit. It’s designed for cast-iron Magnum and KT-series engines rated around 17–20 HP, restoring fuel metering and idle control so your machine returns to reliable operation.

How will this carburetor improve starting and idling?

Replacing a leaking or clogged carburetor with the UMK-301 restores correct fuel-air mixture and float operation, which directly improves cold starts and steady idle. You’ll notice fewer stalls and smoother throttle response once installed and adjusted.

• Restores proper fuel metering for reliable cold starts
• Stabilizes idle and reduces stalling under load
• Includes all necessary components for immediate installation

Will the 1PZ UMK-301 fit my Kohler engine?

This unit is designed to fit Kohler Magnum M18, MV18, M20, MV20 and KT17, KT18, KT19 cast-iron engines in the 17–20 HP range. Verify compatibility by comparing your engine model and Kohler part references (52 053 09 / 52 053 18 / 52 053 28) before ordering to ensure a direct swap.

• Fits specific Kohler Magnum and KT-series cast-iron engines
• Cross-references Kohler part numbers for accurate match
• Check engine model plate or manual for confirmation

What’s included and how easy is installation?

The product ships as a complete carburetor set so you won’t need additional parts for a standard replacement. Basic mechanical skills and common hand tools are sufficient; installation typically involves removing the old unit, transferring any brackets or linkages, and bolting the new carburetor in place followed by a brief adjustment.

• Complete carburetor assembly as pictured—gaskets and fittings included
• Standard bolt-on replacement for matching Kohler models
• Requires simple tuning (idle and mixture) after installation

What should I expect for warranty and returns?

1PZ backs the UMK-301 with a 90-day warranty and a straightforward return policy if the part is defective or not as described. Keep your order details and contact support quickly if you need warranty service or a refund.

• 90 days warranty for manufacturing defects
• Hassle-free returns and money-back guarantee
• Customer service available for fitment questions

Who is this for: The 1PZ UMK-301 carburetor is aimed at owners and technicians maintaining Kohler Magnum or KT-series lawn tractors, generators, or light commercial equipment with 17–20 HP cast-iron engines. It’s ideal for anyone wanting a ready-to-install replacement to restore dependable starting, reduce fuel issues, and avoid the expense of a professional rebuild—provided you confirm model and part-number compatibility before purchasing.