Includes all taxes
OBDResource Car Spark Plug Tester for 12V Vehicles
(Note: ST100 comes with US Plug and EU Plug Adaptor in the box)
Why is Spark Plug Tester Needed?
Spark plug is an important component of the ignition system, which is to introduce tens of millions of volts of high voltage electricity into the combustion chamber, generating the electric spark ignition mixture, and cooperate with the ignition system and fuel supply system, so that the engine works generally speaking, the spark plug needs to be checked regularly and replaced in time. If not timely with the change, it will be shown as: weak action, insufficient acceleration, unstable driving, poor air conditioning refrigeration capacity, increased fuel consumption, black smoke, etc.
OBDResource Automotive Spark Plug Tester
Is a device specifically designed for safe and rapid testing of spark plug performance and quality. It replaces traditional on-board spark testing and is a professional and practical new device for spark plug testing. Users only need to place the spark plug on the tester and generate high-performance and stable ignition high voltage under simulated actual engine operating conditions, causing the spark plug to experience continuous flashover. Users can observe and compare the flashover strength of the spark plug to quickly determine whether the spark plug is good or bad. Throughout the entire testing process, users can have a clear understanding of the working condition of spark plugs, which facilitates precise maintenance or replacement of spark plugs in the future.
Dual Hole Test:
Spark plug tester testing is used to test the performance and ignition strength of spark plugs.Dual hole testing function allows for quick and accurate testing of the performance of spark plugs by placing a brand new spark plug and a spark plug separately in the testing hole. It can truly simulate the working conditions of the engine. The measurement process is more effective and the measurement results are more accurate.
Adjustable Working Frequency:
Spark Plug Tester working frequency of car is 0-6000 rpm. You can adjust it according by rotating the switch, which is very convenient. The higher the frequency, the stronger the spark intensity.
High Quality and Applicability:
Car spark plug tester is made of high-quality thermoplastic polymer structural material (ABS), good heat resistance and impact resistance, and can extend its service life. It can be used to test 12V gasoline vehicles with a diameter of 12mm and is compatible with 99% of crankshaft engines and motorcycle spark plugs on the market.
Plug and Play:
Spark plug tester is very simple. Spark plug to be tested needs to be placed in the test hole, and then connected to the power supply to start the test. It also has a power indicator light and two high-voltage signal indicators, which can help you observe the test more intuitively.

NOTE:
It is not suitable for testing short plugs on lawn mowers, chainsaws, or most small motors. If you are not sure whether it will fit your spark plug, please contact us before purchasing.
Packing Included:
1* ST100 Car Spark Plug Tester (Not Included Spark Plug)
1* User Manual
1* Power US Plug
1* EU Plug Adaptor
Payment Policy – BILLIONS BIRDS
At BILLIONS BIRDS, we are committed to providing a safe, secure, and seamless payment experience for our customers.
1. Accepted Payment Methods
We accept the following payment options:
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All payments must be completed in full at the time of purchase.
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Prices are displayed in the currency indicated on the website. If you are purchasing from another country, your bank may apply currency conversion fees.
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Once your payment has been successfully processed, you will receive an order confirmation email containing your purchase details.
5. Failed or Declined Payments
If your payment is declined, please verify your billing information or contact your bank. Orders will only be processed after successful payment confirmation.
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BILLIONS BIRDS reserves the right to cancel or refuse any order if fraud or unauthorised activity is suspected.
Delivery Policy – BILLIONS BIRDS
At BILLIONS BIRDS, we are dedicated to delivering your orders safely and efficiently.
1. Order Processing
All orders are processed within 1–3 business days after payment confirmation. Orders are not processed or shipped on weekends or public holidays.
2. Shipping Times
Estimated delivery times vary depending on your location:
Domestic Shipping: 3–7 business days
International Shipping: 7–15 business days
Please note that delivery times are estimates and may vary due to customs procedures, carrier delays, weather conditions, or other unforeseen circumstances.
3. Shipping Costs
Shipping fees are calculated at checkout based on your location and selected shipping method. Any customs duties, taxes, or import fees are the customer's responsibility.
4. Tracking Information
Once your order has been shipped, you will receive a confirmation email with tracking details (if available) so you can monitor your package.
5. Delivery Issues
If your order is delayed, lost, or arrives damaged, please contact us within 7 days of the expected delivery date. We will work with the shipping carrier to resolve the issue as quickly as possible.
6. Incorrect Shipping Information
Customers are responsible for providing accurate shipping details at checkout. BILLIONS BIRDS is not responsible for orders shipped to incorrect addresses provided by the customer.
Refund Policy – BILLIONS BIRDS
At BILLIONS BIRDS, customer satisfaction is our top priority. If you are not completely satisfied with your purchase, we’re here to help.
1. Return Eligibility
You may request a return within 14 days of receiving your order. To qualify for a return:
The item must be unused, unworn, and in the same condition as received.
The item must be in its original packaging.
Proof of purchase (order confirmation or receipt) is required.
Certain items may not be eligible for return, including clearance items, gift cards, or personalised/custom products.
2. Non-Refundable Items
The following items are non-refundable:
Final sale or discounted items
Gift cards
Items damaged due to misuse, negligence, or improper care
3. Return Process
To initiate a return, please contact our customer support team with your order number and reason for return. If your return is approved, you will receive instructions for returning the item.
Unless the item is defective or incorrect, customers are responsible for return shipping costs.
4. Refund Processing
Once we receive and inspect your returned item:
We will notify you of the approval or rejection of your refund.
If approved, the refund will be issued to your original payment method within 5–10 business days.
Please note that banks or payment providers may require additional time to process refunds.
5. Damaged or Incorrect Items
If you receive a damaged, defective, or incorrect item, please contact us within 7 days of delivery and provide clear photos of the product and packaging. We will arrange a replacement or full refund at no additional cost.
6. Late or Missing Refunds
If you have not received your refund:
Check your bank account again.
Contact your credit card company or payment provider.
If the issue persists, don't hesitate to contact our support team for assistance.
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