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NGK TR6 Spark Plug The TR6 is one heat range colder than stock, making it ideal for mild boost (up to 15 lbs), nitrous applications, or high-compression Recommended for naturally aspirated LS engines Includes 1 spark plug Copper core plug Factory pre-gapped to .039" (keep this gap the same)
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🇺🇸 Ship from USA · On Agora since 2026
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