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Valve Cover Bolt Assembly for Honda GX390 & Big Block Clone Wedge (Non-Hemi) Heads
Valve Cover Bolt Assembly for Honda GX390 & Big Block Clone Wedge (Non-Hemi) Heads
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Valve Cover Bolt Assembly for Honda GX390 & Big Block Clone Wedge (Non-Hemi) Heads

Part Number: 188F-11243-A
Online Price: $2.50
Valve Cover Bolt Kit for Honda GX390 & Wedge-Style Clone Engines (Non-Hemi)
Availability: In Stock.

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Description

Valve Cover Bolt Assembly for Honda GX390 & Big Block Clone Wedge (Non-Hemi) Heads


Secure your valve cover properly and prevent oil leaks with this Valve Cover Bolt Assembly, specifically designed for Honda GX390-style and Big Block Clone engines equipped with Wedge (Non-Hemi) cylinder heads. This assembly is used on engines with a single central bolt that passes through the middle of the valve cover and fastens between the rocker arms into the cylinder head.


Perfect for stock or replacement builds, this bolt kit ensures a tight, leak-free seal with the included washer and rubber grommet.


Key Features

  • Designed for single-bolt valve covers on GX390 and Wedge-style clone engines
  • Includes bolt, metal washer, and rubber grommet/seal
  • Thread size: M6-1.0 — fits most standard GX390-style non-hemi heads
  • Ideal for Predator 420 and other GX390-based Big Block engines with Wedge (non-Hemi) heads
  • Helps maintain proper valve cover torque and prevent oil seepage


Not Compatible With:

  • Hemi-style cylinder heads
  • 4-bolt valve cover designs (e.g., Wildcat 460 or aftermarket hemi-style heads)


Includes:

  • 1x Valve Cover Bolt
  • 1x Metal Washer
  • 1x Rubber Grommet/Seal

FAQ

Q1: What engines is this valve cover bolt assembly compatible with?
A: This bolt kit fits Honda GX390-style engines and Big Block Clone engines that use a Wedge (non-Hemi) cylinder head with a single central valve cover bolt.


Q2: What comes with the valve cover bolt assembly?
A: The assembly includes:

  • 1x Valve Cover Bolt (M6-1.0 thread)
  • 1x Metal Washer
  • 1x Rubber Grommet/Seal


Q3: Will this fit Hemi-style heads or 4-bolt valve covers?
A: No. This is only compatible with single-bolt valve covers. It will not fit Hemi-style heads or 4-bolt valve cover designs like the ones found on the Wildcat 460 or certain aftermarket heads.


Q4: What thread size is the bolt?
A: The valve cover bolt is M6 x 1.0, which is standard for GX390-style non-hemi cylinder heads.


Q5: What does the rubber grommet do?
A: The rubber grommet acts as a seal between the bolt head and valve cover, helping to prevent oil leaks and maintain even pressure during tightening.


Q6: Can I use this on Predator 420 engines?
A: Yes, as long as your Predator 420 has a Wedge-style (non-Hemi) head with a single-bolt valve cover, this kit will work.

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