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Super Coil for GM LS2, LS3, and LS7 Engines.;These coils feature advanced bobbin technology.; Highly specialized silicone magnetic steel cores with optimized windings; Specialized high temperature epoxy filled housings resists shock, vibration, chemicals, and overall engine bay environment.; These are a direct performance bolt on upgrade.; The ACCEL bodies are molded in a dielectric high-strength material.;