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Fuel Inlet Needle for Honda GX390 & Big Block Clone Carburetors
188F-39 GX390/420 Clone Inlet Needle
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Fuel Inlet Needle for Honda GX390 & Big Block Clone Carburetors

Part Number: 188F-39
Online Price: $2.50
Stock Fuel Inlet Needle for Honda GX390 & Big Block Clone Carburetors
Availability: In Stock.

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Description

Stock Fuel Inlet Needle for Honda GX390 & Big Block Clone Carburetors


Restore proper fuel control in your GX390-style engine with this stock fuel inlet needle valve, designed to fit most Honda GX390 and big block clone carburetors, including Predator 420 and Wildcat 460.


The fuel inlet needle works with the float to regulate fuel flow from the fuel inlet seat into the float bowl. As the float rises, the needle gradually shuts off fuel flow. When the float drops, the needle opens to refill the bowl. A worn or sticking inlet needle can cause flooding, rich running, or hard starting due to fuel overflow.


If your engine is loading up or running rich, this simple yet vital part could be the issue—especially if the tip has deteriorated or if debris is preventing it from sealing properly.


Note: Modern inlet valves are more sensitive to ethanol and alcohol-based fuels due to EPA regulations. Proper fuel maintenance is essential to avoid premature wear.


Tips for Longevity:

  • Always drain fuel from the tank and carburetor before long-term storage
  • Use fuel stabilizer or Maxima MPPL to protect internal carb components
  • Clean the fuel seat area with carb cleaner or rubbing alcohol before installing a new needle
  • Inspect and replace regularly to prevent fuel-related performance issues


Key Features:

  • Direct replacement for GX390-style and clone carburetors
  • Compatible with Predator 420, Wildcat 460, and similar engines
  • Regulates fuel flow into the carburetor float bowl
  • Helps prevent flooding and over-fueling
  • Resistant rubber tip for reliable sealing

A critical component for carburetor rebuilds, tuning, and fuel control reliability.

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