Spark Plug 3914 Racing Plug, Detachable Type

[NGK R5525-9 3914 Spark Plug Racing Plug Detachable Type For Race Circuit Maintenance Repair Parts]
・For racing and tuned engines!
・NGK racing plugs are special spark plugs designed for those who participate in races or circuit driving, or those who have increased their engine output through tuning.
・Choose the optimal racing plug for your car and aim for the best performance.
Specifications
・Part number: R5525-9
・Stock number: 3914
・Terminal type: Detachable
Precautions
*The heat range and firing end shape of racing plugs must be selected according to the engine's tuning level and driving conditions. Please make your selection at your own discretion and responsibility. Please note that we will not be held responsible for any engine or plug problems that may arise as a result.
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*Images are for illustrative purposes only, and the design and specifications of the products shown may change without prior notice. Thank you for your understanding.