Author
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Topic: NGK spark plugs for supercharged engines
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SteveL
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Member # 1241
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posted
8 new, never installed NGK BR9EIX (3981) spark plugs $35
These were for Trick Flow heads but will fit other 14mm thread, 3/4" reach, gasket seat heads. Pre-gapped at .031
These plugs are 2 steps colder than stock and only recommended for blower motors
Specs:
Iridium IX Plug, 14mm Thread Size, 19mm (3/4") Reach, 13/16" (20.6mm) Hex Size, Gasket Seat, Resistor, Removable Terminal Nut, Fine Wire (0.6mm) Iridium Center Electrode, Tapered Cut Ground Electrode, .031" (0.8mm) Gap, Heat Range 9
http://www.summitracing.com/parts/NGK-3981/
Posts: 578 | From: San Jose, CA | Registered: May 2002
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