Say Goodbye to the Hammer. Adjust Spark Plug Gaps Precisely.
Helps adjust the side electrode with controlled pressure, making it easier to set the spark plug gap to your desired thickness without damaging the electrode.
Simple 3-Step Operation
Setting the spark plug gap is straightforward, clean, and highly consistent. The manual turn mechanism delivers exact physical feedback as you adjust.
Step 1: Simply place your spark plug onto the gap tool.
Step 2: Use your desired size feeler gauge for gap thickness.
Step 3: Turn the knob with the feeler gauge in place till the side electrode compresses to the desired gap thickness.
Wide Spark Plug Compatibility
Designed to work with most 10mm, 12mm, 14mm, and 16mm spark plugs. A practical addition for garage maintenance, repairs, and DIY engine work.
Right Way vs. Wrong Way
Tapping or hammering spark plugs to adjust gaps can easily damage the delicate electrode tip or ceramic body. Utilizing manual control-knob pressure lets you safely compress the side electrode to the desired thickness.
Specifications
| Most 10mm, 12mm, 14mm, and 16mm thread spark plugs |
| Not compatible with 18mm thread or longer spark plugs |
| NGK 6061, NGK 5671A, NGK BKR9EIX, and similar types |
| 122mm (4.80") |
| 32mm (1.25" / 1.26") |
| 28mm (1.1") and 25mm (0.98") |
| 30mm (1.18") with knurled non-slip texture |
| Anodized aluminum alloy body, steel threaded adjustment screw, and steel folding gauge |
| Red, Black |
Frequently Asked Questions
❓ What sizes of spark plugs does this tool support?
This tool is compatible with most 10mm, 12mm, 14mm, and 16mm thread spark plugs, including models like NGK 6061, NGK 5671A, and NGK BKR9EIX. It is not compatible with 18mm thread or longer spark plugs.
❓ What is included in this package?
The package includes the anodized aluminum manual spark plug gap adjustment tool along with a folder thickness gauge (feeler gauge) for measuring gap thicknesses.
❓ How does this tool adjust the gap without causing damage?
Instead of hammering or tapping the spark plug, this tool holds the spark plug flat in its slotted aluminum base. Turning the hand knob pushes a horizontal slide block to apply steady, precise, and controlled linear pressure directly to the side electrode.
⚠️ IMPORTANT FITMENT NOTE:
This tool is NOT compatible with 18mm thread or longer spark plugs. Please verify your spark plug thread size before use.