Product ReviewsSpark Plugs X8 NGK Iridium IX Plug 6510 / Ltr7ix11 for Cadillac CTS V6

7 years and going

It is the only plugs I use in my car (close to 600hp Mazda with aux fuel)

Verified purchase:  Yes | Condition: new | Sold by: qeautoparts1

Focus ST

Got these for my non tuned ST. Gap them at .30 and I have no more miss and have not had any issue with these!

Verified purchase:  Yes | Condition: new | Sold by: jdmpartsman714

These are the plugs you need for a tuned Focus ST

1 step colder plugs for a tuned Focus ST. They need to be gapped properly but they do a great job.

Verified purchase:  Yes | Condition: new | Sold by: partscontainer

Nice plugs

These work great in my mazdaspeed6 after gapping them to .026

Verified purchase:  Yes | Condition: new | Sold by: jdmpartsman714

Half the price of autozone

Verified purchase:  Yes | Condition: new | Sold by: sixityauto

Good

Good

Verified purchase:  Yes | Condition: new | Sold by: sixityauto