NGK Spark Plugs GT500 5.4 L / 5.8 L TR7IX - Set of 8
Financing available with Affirm.
This is VMP's recommended spark plug for modified 5.4 L / 5.8 L GT500.
Must properly gap before installation.
Set of 8 colder spark plugs for a forced induction application, must be gapped at 0.028- 0.032" between 21-14 PSI of boost, over 21psi gap .026-.028"
NGK Iridium TR7IX 3690