NGK Iridium Spark Plugs Heat Range #6
These NGK spark plugs are designed for Subarus with 2.5L blocks and 2.0L heads, offering improved durability and heat resistance for turbocharged engines.
- The description claims that iridium plugs can use larger gap settings with less voltage.
- The description recommends using one step colder plugs for heavily modified cars.
- The description claims that these plugs will improve engine efficiency and power.
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