SPARK PLUG (86-3133) transmits electric current from an ignition system to a spark-ignition engine's combustion chamber, allowing an electric spark to ignite a compressed fuel/air mixture while maintaining the engine's combustion pressure. The ignition system provides enough electricity to spark across the spark plug gap. It has a firing end temperature that is kept at a low enough level to prevent pre-ignition. The most significant structural alteration that impacts the heat value is the length of the insulator nose. The space between the insulator's firing tip and the point where the insulator hits the metal shell is bigger on a hotter spark plug insulator nose. As a result, the heat dissipation distance between the insulator nose and the cylinder head is longer.
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You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.)
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, please Contact Us with your order number and details about the product you would like to return. We will respond quickly with instructions for how to return items from your order.
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