19
2025
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09
How to Choose Spark Plug Caps
Author:
When selecting a spark plug cap (i.e., the spark plug gasket), pay close attention to the following key points:
Adaptability
The thread size of the spark plug cap must perfectly match the original factory spark plug, including parameters such as thread diameter and thread length, ensuring a secure seal after installation and preventing any air leaks.
Material Selection
Prioritize selecting high-temperature-resistant materials (such as ceramics or metal substrates), which can withstand the extreme heat generated during engine operation while also offering excellent insulation and corrosion resistance.
Brand and Quality
It is recommended to choose well-known brands, as their products undergo rigorous testing and offer greater reliability. Avoid using low-quality products that may lead to air leaks or ignition failures.
Important Notes
When installing, ensure the spark plug cap fits snugly against the combustion chamber to prevent sealing issues caused by improper sizing. If the original factory spark plugs are missing, refer to the vehicle’s owner’s manual or consult a professional mechanic to confirm the correct specifications.
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