Ford Performance offers these OE quality plugs one heat range colder than stock spark plug for use in engines with higher than stock cylinder combustion pressures. If you've increased boost, race, or run hard and high RPM's in the desert for hours, these are a perfect upgrade. Sold in sets of 6 and pre-gapped to 0.031-inch (0.8mm).
Product Benefits:
CA Residents: Cancer and Reproductive Harm WARNING www.p65warnings.ca.gov.
