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Clone 390-420-460 M6 x 25 Coil Bolt
GB5789-87 GX390/420 Clone M6x25 Coil Bolt
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Clone 390-420-460 M6 x 25 Coil Bolt

Part Number: GB-5789-87
Online Price: $0.99
M6-1.0 x 25mm Coil Mounting Bolt – GX390 / Predator 420 / Big Block Clone Engines
Availability: In Stock.

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Description

M6-1.0 x 25mm Ignition Coil Mounting Bolt – Honda GX390 / Predator 420 / Big Block Clones


This M6-1.0 x 25mm ignition coil bolt is a direct replacement for securing the ignition coil to the engine block on Honda GX390, Predator 420, Wildcat 460, and most GX390-style Big Block Clone engines.


Essential for accurate ignition timing, this bolt ensures the coil remains firmly in place when setting the proper air gap between the coil and the flywheel.


Specifications:

  • Thread Size: M6-1.0
  • Length: 25mm
  • Torque Spec: 7 ft-lbs
  • Material: Hardened steel (zinc-coated or black oxide—specify if needed)
  • Application: Ignition coil mounting on GX390-style engines


Key Features:

  • OE-style fit for Honda GX390 and clone engines
  • Proper length and thread pitch for reliable ignition coil mounting
  • Critical for setting and maintaining accurate coil air gap
  • Ideal for replacement or new engine builds

FAQ

Q1: What does this coil bolt fit?
A: This bolt fits most Honda GX390, Predator 420, Wildcat 460, and other GX390-style Big Block Clone engines to mount the ignition coil securely to the engine block.


Q2: What are the dimensions of this bolt?
A: It has a thread size of M6-1.0 and a length of 25mm. It’s designed specifically for small engine ignition coil mounting applications.


Q3: How tight should I torque this coil bolt?
A: Torque to 7 ft-lbs (84 in-lbs). Over-tightening can crack the coil bracket or strip threads in the block.


Q4: Can I reuse my original coil bolts?
A: Yes, if they’re in good condition. However, if they’re stripped, corroded, or mismatched, replacing them with a proper-spec M6-1.0 x 25mm bolt is recommended for reliable ignition coil mounting.


Q5: Is this bolt compatible with ARC’s billet coil bracket (#5980)?
A: Yes, this bolt is commonly used with ARC billet coil brackets and other aftermarket flywheel/ignition setups that require repositioning the coil.

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