1. Home
  2. Engines
  3. Harbor Freight Engines
  4. Predator 420 Engines
  5. Carburetors
  6. OEM Carburetor
  7. Throttle Shutter for Honda GX390 & Big Block Clone Carburetors
Write a Review

Throttle Shutter for Honda GX390 & Big Block Clone Carburetors

Part Number: 188F-52
Online Price: $1.99
Throttle Shutter (Butterfly) for Honda GX390 & Clone Carburetors
Availability: In Stock.

Send to:

*We'll ask for shipping info at checkout

Description

Throttle Shutter (Butterfly) for Honda GX390 & Big Block Clone Carburetors


Ensure smooth throttle control and proper air flow with this high-quality Throttle Shutter, designed to fit most Honda GX390-style big block clone carburetors, including the popular Predator 420 and Wildcat 460 engines.


Also known as the butterfly valve, this throttle shutter plays a crucial role in regulating the air intake through your carburetor, directly affecting engine response, fuel delivery, and overall performance.


Key Features:

  • Precision-fit throttle shutter for GX390-style clone carburetors
  • Compatible with Predator 420, Wildcat 460, and other big block engines
  • Helps control air flow and throttle response
  • Durable construction for reliable long-term use
  • Held in place by two mounting screws (sold separately)


Whether you're repairing, rebuilding, or upgrading your engine, replacing a worn or damaged throttle shutter helps restore optimal engine function and drivability.

FAQ

Q1: What does a throttle shutter (butterfly valve) do in a GX390 carburetor?

A: The throttle shutter controls the amount of air entering the carburetor. It opens or closes in response to throttle input, regulating airflow and engine speed.


Q2: Is this throttle shutter compatible with Predator 420 and Wildcat 460 engines?

A: Yes, this throttle shutter fits most GX390-style big block clone carburetors, including Predator 420 and Wildcat 460 models.


Q3: Are the mounting screws included?

A: No, the two screws that secure the throttle shutter are sold separately. Be sure to reuse or replace them during installation.


Q4: How do I know if my throttle shutter needs replacing?

A: Signs include poor throttle response, erratic idle, or visible damage to the shutter or mounting holes. A new shutter helps restore optimal performance.


Q5: Can I install this throttle shutter myself?

A: Yes, installation is straightforward for those familiar with small engine carburetors. Just ensure proper alignment and secure it with the appropriate screws.

Related Items

Recently Viewed Items