Review on NGK 94124 ILKAR7L11 Laser Iridium Spark Plug 4-Pack: Reliable Performance at its Finest by Willie Ogunlana

OEM replacement for 2014 Mazda CX-5 2.5L engine. You need a 9/16 socket (NOT a 5/8 socket which 99% of cars use). Changing the connector takes a maximum of 10 minutes. All you need is a ratchet, a 6" extension and a 9/16 socket. If you're really picky use a torque wrench to torque the new ones to spec, but I just hand tighten them. No anti- Use seize. Make sure the engine is completely cold. Putting cold spark plugs on a hot engine makes it easier to remove the threads in the cylinder block. I change at 60,000 km. The manual says 70k.