4-Piece Spark Plug Gap Gauge Set

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Spark Plug Gap Gauges for Most Gap Sizes

This set includes two types of spark plug gap gauges. The two 9-wire gauges cover most of the most common sizes of spark plug gaps, and feature a built-in gap adjuster tool that can be used to correct the gap size to the right specification. The two ramp gauges feature a continuous scale that lets you take quick and easy measurements, and even feature a hole that will let you keep them on your keychain. The wire gauges are made of durable steel with chrome plating to help prevent rust and corrosion, and SAE and metric sizes are stamped on each gauge, making it easy to get an accurate reading for your spark plug gap and adjust accordingly.


  • Includes: 2 pc. Wire gauge and 2 pc. Ramp gauge
  • Wire Gauge Sizes: 0.025, 0.030, 0.035, 0.040, 0.045, 0.050, 0.055 0.060, and 0.080 inches (0.64, 0.76, 0.89, 1.02, 1.14, 1.27, 1.40, 1.52, 2.03mm)
  • Ramp Gauge Scale: 0.02 to 0.1 inches (0.5mm to 2.5mm)
  • Wire gauges feature durable steel construction
  • Wire gauges' chrome plated finish resists rust and corrosion
  • Both gauges stamped with metric and SAE size markings
  • Gauges measure and correct spark plug gaps
  • Ramp gauge features a hole that will let you keep it on your keychain
  • Wire gauge features built-in gap adjuster tool