NGK Iridium IX Performance Spark Plugs (ZFR6FIX-11)
2008-2009 Dodge Caliber SRT-4 2.4L DOHC Turbo
Part Number # ZFR6FIX-11 6441
- 4pcs: NGK iridium spark plugs ZFR6FIX-11
- Heat Range: 6
- One step colder than stock
- Perfect for those turning up the boost making over 80-100 more horsepower.
- NGK IX Iridium Series plugs were designed specifically for the performance enthusiast.
- Fine wire center electrode ensures high durability and a consistently stable spark
- Iridium alloy has an extremely high melting point, perfect for today's high-tech, high performance engines
- Trivalent metal plating provides superior anti-corrosion and anti-seizing properties
- Corrugated ribs prevent flashover
- Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer
- Copper core aids in heat removal
- Triple seals prevent leakage
- durability and a higher melting point compared to Platinum plugs
- NOTE: Always read spark plugs after a wide open throttle pull. Higher boost levels generally require a colder plug.