For that extra burst of power when you need it most, you can count on DENSO to harness the power of iridium to dramatically increase firing performance. The result is maximum horsepower and torque. 2006 Lincoln Zephyr 3.0L V6;Engine Vin-1.
no cons I can think of. I use these plugs in my dirt bikes and they run great ! best plugs you can buy IMO, also use them in my street rod that is super charged running E-85, replaced them at 40,000 MI just because ..