Just beware of fake NGK and Denso Iridium plugs... It's almost impossible to tell the fakes from the original unless you have a known original plug to compare side by side.

ahahaha...

Buy from reputable workshop or auto parts shop.... that way if fake can go back complaint.

I buy from my regular mechanic if he dare sell fake parts to me... I'll 'accidentally' burn his shop to the ground... that's my common joke to him.

There's an easy way to check..

Just take the Iridium spark plug out and check the electrode tip.
If after 50,000 km still good condition then no need change ler...

Buy the correct tools and you can do it at home during weekends.

that will make the job harder... have to remove the airbox first (at same time can wash it, that's what i do everytime I remove the airbox)

Just see how ur regular mechanic does it, then just follow the same steps.

Sure original Iridium plugs?

I got con before with fake Iridium plugs... really cannot tell the difference unless compare side by side.
The fake plugs doesn't last as long as original Iridium plugs. When I remove the fake plugs at 50,000 km can see a lot of wear.

Original plugs, even after 50,000 km still look like new... but never tried until 100,000 km la...