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Clone 390-420-460 M8 x 40 Side Cover Bolt
Clone 390-420-460 M8 x 40 Side Cover Bolt
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Clone 390-420-460 M8 x 40 Side Cover Bolt

Part Number: GB-5789-86
Online Price: $2.49
Side Cover Bolt – M8-1.25 x 40mm for GX390, Predator 420, Wildcat 460
Availability: Out of Stock.

Description

M8-1.25 x 40mm Side Cover Bolt – Fits Honda GX390, Predator 420 & Big Block Clone Engines


Secure your engine’s side cover with confidence using this high-strength M8-1.25 x 40mm bolt, engineered for Honda GX390, Predator 420, Wildcat 460, and other big block clone engines. This bolt is specifically used to fasten the PTO side cover (crankcase cover) to the engine block, helping maintain a tight seal and structural integrity under demanding operating conditions.


Product Details:

  • ? Size: M8-1.25 thread pitch x 40mm length
  • ? Function: Fastens the side cover (PTO/crankcase cover) to the engine block
  • ? Material Grade: Hardened steel – built for durability and torque retention
  • ? Torque Spec: 21 ft-lbs



Compatibility:

  • ? Honda GX390
  • ? Predator 420 (typically uses 7 side cover bolts)
  • ? Wildcat 460 (heavy-duty blocks may use up to 10 side cover bolts)
  • ? Other Big Block GX390-Style Clone Engines

Please confirm the number of bolts required for your specific engine model before ordering.


Why This Bolt?

  • High-strength, vibration-resistant design
  • Precision-machined threads for a secure fit
  • Ideal for OEM replacement or high-performance engine builds
  • Compatible with stock and aftermarket side covers

FAQ

Q1: How many of these bolts do I need for my engine?
A: Most Predator 420 engines require 7 bolts for the side cover, while Wildcat 460 heavy-duty blocks may use up to 10. Check your specific engine model or manual for the exact quantity.


Q2: Will this fit a standard GX390 block?
A: Yes, this bolt is designed for Honda GX390 and most big block GX390-style clone engines.


Q3: Can I use this bolt for performance or racing applications?
A: Yes! It's ideal for high-performance builds and offers reliable torque retention even in demanding setups like racing mowers or pulling tractors.

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