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Spark Plug Tester, Adjustable Ignition Coil Tester System, Coil Pack Tester, Spark Testers Tool, Spark Checker, Autos Diagnostic Test Tool for Automotive, Small Engines, Lawnmowers

  • Based on 181 reviews
Condition: New
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$8.59 Why this price?
Save $11.39 was $19.98

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Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, Jun 22
Order within 2 hours and 48 minutes
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Size: 1 PC


Features

  • Pitch Adjustment Function: The spark plugs tester is equipped with a pitch adjustment valve and a round knob, which can adjust the observation pitch of the spark plugs according to the needs of different car models, and at the same time can effectively avoid the occurrence of misfire and burnt ignition coils
  • Quality Materials: The use of metal connectors to ensure durability and excellent electrical conductivity, to ensure that the current transmission between the inline spark plug tester and the spark plug is stable and efficient, to improve the accuracy of the test
  • High Visibility Design: The spark tester for small engine's viewing area scale values are in white font, making it easy to read the scale clearly when measuring gap values from 0 to 40k, even in bright light conditions. This high visibility design enhances ease of operation and accuracy
  • How to Use: This ignition coil tester tool is equipped with rubber-coated ground wire, grounding alligator clips and springs for safe and stable introduction of high voltage current. To use, attach the alligator clip to the engine, connect the other end to the spark plug wire and check the spark length through the small window. The longer the spark gap, the stronger the coil
  • Widely Applicable: The spark tester has an overall length of 4.5 inches, a cable length of 19.7 inches and a diameter of 0.92 inches. Designed to ensure compatibility with a wide range of automotive ignition systems, it is an ideal tool for automotive maintenance, small engine inspections, ignition coil testing, and lawn mower maintenance

Brand: ecocstm


Power Source: Corded Electric


Style: Compact


Item Weight: 2.4 ounces


Unit Count: 1.0 Count


Power Source: Corded Electric


Compatible Devices: Cars, lawnmowers, small engines


Style Name: Compact


Item Weight: 2.4 ounces


Brand Name: ecocstm


Manufacturer: ecocstm


Part Number: ecocstm-SPT-01


Unit Count: 1.0 Count


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Jun 22

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • works great
Size: 1 PC
Good product works as designed
Reviewed in the United States on May 13, 2026 by Lwash

  • Easy to use and effective.
Size: 1 PC
This is a simple and effective tool for testing ignition coils. It helped me identify that older coils did need to be replaced and in a separate situation quickly identify a coil failure.
Reviewed in the United States on May 6, 2026 by jonnyz2

  • Good quality
Size: 1 PC
Excellent
Reviewed in the United States on May 22, 2026 by Isaac Portocarrero

  • Handy spark tester to have
Size: 1 PC
Appears to be the same quality as other more known brands. Functions as intended and seems to be well built. Pretty good value and would recommend.
Reviewed in the United States on September 1, 2025 by Conscious Buyer

  • Perfect for testing spark
Size: 1 PC
Worked great
Reviewed in the United States on May 29, 2026 by David

  • Spring holds test gap in set position
Size: 1 PC
This tool is of very high quality. It has a spring that gives tension to the test gap screw. This helps hold the test gap setting while in use. Many other versions of this on Amazon do not have this spring.
Reviewed in the United States on March 20, 2026 by Antlerbanger

  • Good for the price
Size: 1 PC
Works as it should
Reviewed in the United States on May 2, 2026 by GKO

  • Shows the spark
Size: 1 PC
This works well, I would preffer a cover over the spark though. I have been zapped a couple times. The clip is a little tight, but it does it's job.
Reviewed in the United States on April 19, 2026 by Kevin B

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