Denso Iridium Power Spark Plug Two Step Colder IKH24 Subaru WRX 2006-2014 / STI 2004+

Description

Once you start performing modifications that increase horsepower and torque such as a turbo-back exhaust system, intake, injectors, and a tune, going to a colder spark plug is required.

Here, you are looking at the Denso IKH24 (5346) Iridium Power Spark Plug. These are a 2-step colder spark plug, and it has been designed to provide durability under the most extreme of conditions, and the featured patented iridium alloy is six times harder and eight times stronger than conventional platinum, and can handle temperatures in excess of 4000F.

Note that these are sold individually.