NGK 4177 Spark Plug TR6
The OG crate motor plug—NGK TR6, aka 4177, aka “don’t fix what ain’t broke.” Heat range 6 and copper core, this bad boy is the go-to for LS swaps, street bruisers, and budget builds that still slap. Fires clean, handles boost, and doesn’t care what fuel you throw at it.
Drop it in, gap it right, and let that crate breathe fire. Add to cart and let 'er eat.
Internal Reference:
NGK-TR6-4177
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