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ULLMAN UNIVERSAL SPARK PLUG GAP GAUGE

$1.98/Each
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Part# 12-21375
MFR Model# SG-2 INCHES

Overview

Provides easy accurate spark plug adjustment. Features flanged edge for electrode bend- ing and beveled round hole for opening gap. 1.5" dia. Wt.: 0.8 oz. Scaled from .020" to .100". Pewter plating makes the inches more legible for user to read. Also available in metric scale (0.5 mm to 2.4 mm).
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Reviews

I have used these for years but couldnt find replace ments for old ones I had. After years of use my old ones were wearing so the were not accurate anymore and the hardware store I bought them at no longer carries them. These appear identical I gapped a plug for my SR500 and checked the gap with feeler gauges and it was spot on.

Mike D
May 21, 2020

Simple, effective, cheap, weighs nothing and fits in any tool kit.

John C
January 14, 2018

Q&A

Q: Is the center region of the gap gauge empty or is there an Ullman logo?

The center of the gap gauge is blank.

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