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NGK Iridium Spark Plugs

525 spark plug

525 tip

NGK Iridium Spark Plugs

These NGK Iridium IX Marine Spark Plugs feature an ultra-fine center electrode that’s designed just thick enough to ensure the maximum durability and life of the spark plugs, and just thin enough to create an accurate and consistent spark.

They represent the Ultimate Evolution of spark plug technology and performance. Iridium is significantly stronger than any metal used in spark plugs today. It’s the hardest metal used (in fact, iridium is 6 times harder than platinum), which has allowed NGK engineers to reduce the voltage requirement for a spark.

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NGK 454 Spark Plug

454-502

NGK Iridium Spark Plug 454-502 This is an NGK Iridium Spark plug to replace the stock plugs found in many 454-502 marine big block engines. (replaces AC-MR43T). Product Number:  NGK 454-502 Price:  $9.75         Specifications Tip Design: Non-extendedSeat Design: TaperedHeat Range: StockThreads: 14mmResistor: YesGap: .035″

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496 Mag Ho Iridium Spark Plug Tip

496 Mag / HO

496 Mag / Ho NGK Iridium Spark Plug Product Number:  NGK496 Price:  $9.75  Specifications Tip Design: ExtendedSeat design: TaperedHeat Range: StockThreads: 14mmResistor: YesGap: .060″          

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525 spark plug

525EFI – 600Sci – 700Sci

525 EFI – 600 Sci – 700 Sci These are the NGK Iridium Spark plug to replace the stock plugs found in the 525, 600 and 700 family of Marine Engines. Product Number:  NGK525 Price:  $9.75                         Specifications Tip Design: ExtendedSeat design: GasketHeat Range: …

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