MODULAR 3-VALVE ZERO DEGREE SPARK PLUG
M-12405-3V0* For use in engines with higher than stock cylinder combustion pressures Unique design is proprietary to Ford 3-valve engines Only available through Ford Racing One heat range colder than the stock Mustang GT plug Two heat ranges colder than the stock 5.4L truck 3-valve engine Sold in engine sets of 8
*special order item, allow 7-10 days for delivery
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