1. Home
  2. Engines
  3. Harbor Freight Engines
  4. Predator 420 Engines
  5. Head & Valve Train
  6. Stock Cast Iron Intake Valve Guide for Honda GX390 & Big Block Clones
Stock Cast Iron Intake Valve Guide for Honda GX390 & Big Block Clones
188F-11203-A GX390/420 Clone Intake Valve Guide
Write a Review

Stock Cast Iron Intake Valve Guide for Honda GX390 & Big Block Clones

Part Number: 188F-11203-A
Online Price: $6.95
Honda GX390 Intake Valve Guide | Predator 420 & Wildcat 460 Compatible
Availability: In Stock.

Send to:

*We'll ask for shipping info at checkout

Description

Stock Cast Iron Intake Valve Guide – Honda GX390 / Predator 420 / Wildcat 460 (Wedge Heads)


This OEM-style cast iron intake valve guide is designed for use in Wedge (Non-Hemi) cylinder heads found on Honda GX390 and most Big Block Clone engines, including Predator 420 and Wildcat 460 models.


Crafted from durable cast iron, this guide offers excellent wear resistance and heat tolerance—ideal for performance builds, rebuilds, or factory replacement applications.

Note: Inside diameter (~6.25mm) must be precision reamed to accept standard 6.5mm valve stems.


Specifications:

  • Overall Length: 37mm (1.459")
  • Outer Diameter: 12mm (0.475")
  • Inner Diameter (pre-reamed): ~6.25mm (0.245")
  • Material: High-durability cast iron
  • Application: Intake valve guide for non-hemi big block cylinder heads
  • Fitment: Honda GX390, Predator 420, Wildcat 460, and similar Wedge-head clones


Key Features:

  • Direct replacement for worn or damaged intake valve guides
  • Designed for heat and friction tolerance in high-performance use
  • Compatible with aftermarket or OEM valves (requires finish reaming)

FAQ

Q1: What engines does this intake valve guide fit?
A: This valve guide fits most Honda GX390 and Big Block Clone engines with Wedge (Non-Hemi) cylinder heads, including Predator 420 and Wildcat 460 models.


Q2: What material is the valve guide made from?
A: It is made from durable cast iron, designed to withstand heat and friction for long-lasting performance.


Q3: Do I need to modify the valve guide before installation?
A: Yes, the inside diameter is approximately 6.25mm and must be precision reamed to fit standard 6.5mm valve stems.


Q4: Can this valve guide be used on Hemi-style heads?
A: No, this guide is designed specifically for Wedge (Non-Hemi) heads and will not fit Hemi-style cylinder heads.


Q5: Is this valve guide a direct replacement for OEM parts?
A: Yes, it serves as a direct replacement for stock intake valve guides in compatible Honda GX390 and Big Block Clone engines.


Q6: What tools do I need to install this valve guide?
A: You'll need a precision reaming tool to size the guide bore to 6.5mm and standard tools for valve guide installation.

Recently Viewed Items

Logo