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Stock Throttle Shaft for Honda GX390 & Big Block Clone Carburetors
188F-51 GX390/420 Throttle Shaft
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Stock Throttle Shaft for Honda GX390 & Big Block Clone Carburetors

Part Number: 188F-51
Online Price: $2.95
Stock Throttle Shaft for Honda GX390 & Clone Carburetors
Availability: In Stock.

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Description

Stock Throttle Shaft for Honda GX390 & Big Block Clone Carburetors


Restore your carburetor’s throttle control with this OEM-style throttle shaft, designed to fit most Honda GX390-style and Big Block Clone carburetors.


This part is essential for smooth throttle operation, linking your throttle lever to the throttle shutter (butterfly). Whether you're rebuilding a Predator 420, Wildcat 460, or other GX390-based clone, this throttle shaft delivers a reliable fit and factory-like performance.


Note: This listing is for the throttle shaft only. The throttle shutter (butterfly) and mounting screws are sold separately.


Key Features:

  • Direct replacement for stock GX390-style throttle shafts
  • Compatible with Predator 420, Wildcat 460, and other big block clones
  • Durable steel construction for long-lasting performance
  • Ideal for carburetor rebuilds, repairs, or performance tuning

FAQ

Q1: What does the throttle shaft do in a GX390 carburetor?

A: The throttle shaft connects the throttle lever to the throttle shutter (butterfly), controlling airflow and engine speed when the throttle is engaged.


Q2: Will this throttle shaft fit Predator 420 or Wildcat 460 carburetors?

A: Yes, this stock-style throttle shaft is compatible with most big block clone carburetors, including Predator 420 and Wildcat 460 models based on the GX390 design.


Q3: Does this come with the throttle shutter or mounting screws?

A: No. This listing includes the throttle shaft only. The shutter and screws must be purchased separately if needed.


Q4: How do I know if my throttle shaft needs to be replaced?

A: Symptoms include sticking throttle, poor engine response, or visible wear or play in the shaft. Replacing it can restore smooth throttle function.

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