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Greddy Spark Plugs are designed for cooler heat ranges to reduce heat and chances of pre-ignition. Iridium Tune Spark Plugs are ideal for mildly tuned engines, factory turbocharged engines or bolt on turbo kit equipped vehicles. PRO Iridium Plugs are ideal for high horsepower, high boost applications and new Long Reach types are good for certain engines like that of the 350Z.
Sold as each
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| ISO type, head range 6 |
| $19.50 |  | 13000076 | | ISO type, head range 7 |
| $19.50 |  | 13000077 | | ISO type, head range 8 |
| $19.50 |  | 13000078 | | ISO type, head range 9 |
| $19.50 |  | 13000079 | | JIS type, heat range 6 |
| $19.50 |  | 13000066 | | JIS type, heat range 7 |
| $19.50 |  | 13000067 | | JIS type, heat range 8 |
| $19.50 |  | 13000068 | | JIS type, heat range 9 |
| $19.50 |  | 13000069 | |
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