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.035 Feeler Gauge - 12 Inch Long
.035" Feeler Gauge used for setting ignition coil gap
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.035 Feeler Gauge - 12 Inch Long

Part Number: FGR-035
Online Price: $4.10
.035" Feeler Gauge – 12" Long Coil Gap Tool for ARC, SK, Billet Flywheels | Predator 212, GX200, Clone Engines
Availability: In Stock.

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Description

.035" Long Feeler Gauge – 12" Coil Gap Tool for ARC & SK Billet Flywheels


Make setting your ignition coil gap quick, accurate, and frustration-free with our 12-inch long .035" feeler gauge—the ideal tool for performance engines using ARC or SK billet flywheels.


Why Use a .035" Coil Gap?

Billet flywheels from ARC, SK, and other high-performance brands feature strong neodymium magnets, which produce a significantly more powerful magnetic field than stock flywheels. Setting the proper gap is critical to ensure:

  • Clean and consistent spark
  • Proper ignition timing
  • Preventing misfire or early rev limiting
  • Maximum performance and reliability

A coil gap that’s too tight can cause erratic ignition behavior—leading to poor performance or even a built-in rev limiter effect.


Product Specs:

  • Gauge Thickness: 0.035"
  • Length: 12 inches for easy use across both coil legs
  • Material: Precision-ground steel


Engine Compatibility:

Designed for use with high-performance flywheels on popular small engines, including:

  • Predator 212 (Hemi & Non-Hemi)
  • Honda GX200 & 196cc Clones
  • Tillotson 196R / 212R / 225RS
  • Ducar 196 / 212 / 224
  • Wildcat 223 / 240
  • Briggs & Stratton V-Twins and Big Blocks
  • Other industrial small block racing engine


Why Choose This Feeler Gauge?

  • Extra length makes setting both coil legs fast and accurate
  • Specifically sized for billet flywheel coil gap recommendations
  • Prevents common ignition problems from incorrect coil spacing


Pro Tip

  • Recommended for coil gaps between .035" and .050" on engines running billet flywheels


FAQ

Q: What is this feeler gauge used for?

This .035" feeler gauge is used to accurately set the ignition coil gap when installing billet flywheels such as ARC or SK models on small engines.


Q: Why does coil gap matter?

If the ignition coil is set too close or too far from the flywheel, it can cause erratic spark timing, misfires, or even trigger a rev limiter effect—hurting performance and reliability.


Q: Why is this gauge 12 inches long?

The extended length makes it easier to set the coil gap evenly across both coil legs, especially in tight or awkward engine compartments.


Q: What engines is this tool compatible with?

It works with Predator 212 (Hemi and Non-Hemi), Honda GX200, Tillotson 196/212/225, Ducar 196/224, Wildcat 223/240, and most small-block or V-Twin engines running aftermarket billet flywheels.


Q: What is the recommended coil gap for billet flywheels?

Most billet flywheels recommend a coil gap between .035" and .050". Always refer to the flywheel manufacturer's instructions for exact specs.


Q: Is this gauge compatible with stock flywheels?

While you can use it for stock flywheels, most stock setups require a tighter gap, around .016". We recommend using our .016" feeler gauge for stock flywheel applications.

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