These spark plugs are one step colder, suitable for highly modified cars. These are not recommended for stock applications. They are identical to the spark plugs a "weis" man would "tec"nically sell you for $400, except we gap them correctly before sending them to you. Comes as a set of 8.
Special order, may have a delayed ship time. The OEM spark plugs use a 14mm head, these spark plugs use a 16mm head.
