Sierra 18-29723 Promaster Engine Coil
Sierra high-quality Promaster Engine Coils deliver higher performance through faster rise time and longer spark duration.
- A rugged, glass-filled polyester case and oil-filled construction ensure long life w/ no energy loss
- Threaded brass contact terminals/spark plug type secondary post for better coil wire retention
- Effective to 8000 RPMs
- Internally Resisted
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