NGK

NGK — The World's #1 Spark Plug Brand

NGK has been manufacturing spark plugs and ignition components since 1936, earning the position of the world's most widely used spark plug brand through consistent quality, precise application engineering, and a product lineup that covers virtually every gasoline and diesel engine on the road. From standard copper plugs to laser iridium performance units, NGK produces spark plugs for OEM factory fill, replacement service, and high-performance applications — with the same engineering rigor applied to every tier of the product lineup.

Copper Spark Plugs

NGK's copper core spark plugs are the baseline of the lineup, providing reliable ignition performance for standard replacement applications across a wide range of domestic and import engines. Copper core construction provides excellent thermal conductivity for consistent heat range performance, with NGK's corrugated ribs and triple gasket seal preventing flashover and ensuring a leak-free installation. Copper plugs are the correct choice for older engines with conventional ignition systems and for applications where plug replacement is performed at standard service intervals.

Platinum & Double Platinum Spark Plugs

NGK platinum spark plugs extend service life beyond copper plugs through a platinum firing tip that resists electrode wear at the higher temperatures generated by modern engine management systems. Double platinum designs place platinum on both the center and ground electrodes, providing consistent gap maintenance over extended service intervals on waste-spark ignition systems where both electrodes experience equal wear. Platinum plugs are the correct OEM-specification replacement for most modern domestic and import vehicles with extended tune-up intervals.

Iridium & Laser Iridium Spark Plugs

NGK's iridium spark plug lineup represents the highest tier of the product range, with iridium firing tips that provide the longest service life and most consistent spark performance of any plug construction. The fine-wire iridium center electrode requires less voltage to fire than a conventional electrode, reducing ignition system load and improving spark reliability at high RPM and under boost. Laser Iridium plugs use a laser-welded iridium tip on both the center and ground electrodes for maximum durability and consistent gap maintenance over 100,000-mile service intervals on supported applications.

For performance and forced induction applications, NGK's iridium plugs provide the spark reliability needed at elevated cylinder pressures where conventional plugs misfire. The reduced firing voltage requirement of the fine-wire iridium electrode is particularly beneficial in turbocharged and supercharged engines where cylinder pressure at ignition timing is significantly higher than a naturally aspirated equivalent.

Racing Spark Plugs

NGK produces a dedicated racing spark plug lineup for competition applications where standard plugs are insufficient for the heat range, electrode configuration, or firing voltage requirements of the engine. Racing plugs are available in a wide range of heat ranges to match the specific thermal load of different engine combinations, fuel types, and boost levels. Correct heat range selection is critical in race applications — a plug that is too cold will foul, while a plug that is too hot risks pre-ignition and engine damage.

Oxygen Sensors

NGK produces OEM-quality oxygen sensors and air/fuel ratio sensors for a wide range of domestic and import vehicles. Wideband and narrowband sensor options cover both pre-cat and post-cat sensor positions, with direct-fit connectors and correct thread pitch for each supported application. NGK oxygen sensors meet or exceed OEM specifications for response time, accuracy, and service life — ensuring correct fuel trim operation and emissions system function after replacement.

Common Applications

NGK spark plugs and sensors cover virtually every domestic and import vehicle platform — including GM, Ford, Chrysler/Mopar, Toyota, Honda, Subaru, Nissan, BMW, Mercedes-Benz, Volkswagen, and Audi applications across all engine types and model years. NGK's application database is the most comprehensive in the spark plug industry, with OEM-specification plugs for current-model-year vehicles and replacement plugs for vintage and classic applications.

Installation Notes

NGK spark plugs are pre-gapped to the OEM specification for most applications — verify the gap against the vehicle specification before installation and adjust carefully if needed, as iridium and platinum fine-wire electrodes are more fragile than copper electrodes and can be damaged by aggressive gapping. Apply anti-seize to plug threads only if specified by the vehicle manufacturer — NGK plugs have a nickel-plated shell that provides adequate corrosion resistance without anti-seize on m...

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  • NGK DPR6EB-9 Spark Plug Stock # 3108
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    NGK DPR6EB-9 Spark Plug Stock # 3108
    $6.99 USD
    $6.99 USD
    $6.99 USD
    NGK DPR6EB-9 Spark Plug Stock # 3108NGK DPR6EB-9 is listed in the supplied catalog as spark plugs: Spark Plug Stock # 3108.Product Details Brand: NGK Manufacturer Part Number: DPR6EB-9 Product T...
  • NGK CR8EIX Spark Plug Stock # 4218
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    NGK CR8EIX Spark Plug Stock # 4218
    $11.99 USD
    $11.99 USD
    $11.99 USD
    NGK CR8EIX Spark Plug Stock # 4218NGK CR8EIX is listed in the supplied catalog as spark plugs: Spark Plug Stock # 4218.Product Details Brand: NGK Manufacturer Part Number: CR8EIX Product Type: S...
  • NGK BR8ES-11 Spark Plug Stock # 7986
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    NGK BR8ES-11 Spark Plug Stock # 7986
    $4.99 USD
    $4.99 USD
    $4.99 USD
    NGK BR8ES-11 Spark Plug Stock # 7986NGK BR8ES-11 is listed in the supplied catalog as spark plugs: Spark Plug Stock # 7986.Product Details Brand: NGK Manufacturer Part Number: BR8ES-11 Product T...
  • NGK BR7EIX Spark Plug Stock # 6664
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    NGK BR7EIX Spark Plug Stock # 6664
    $10.99 USD
    $10.99 USD
    $10.99 USD
    NGK BR7EIX Spark Plug Stock # 6664NGK BR7EIX is listed in the supplied catalog as spark plugs: Spark Plug Stock # 6664.Product Details Brand: NGK Manufacturer Part Number: BR7EIX Product Type: S...
  • NGK BR10EG Spark Plug 3830 Spark Plugs
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    NGK BR10EG Spark Plug 3830 Spark Plugs
    $8.99 USD
    $8.99 USD
    $8.99 USD
    NGK BR10EG Spark Plug 3830 Spark PlugsNGK BR10EG is listed in the supplied catalog as spark plugs: Spark Plug 3830 Spark Plugs.Product Details Brand: NGK Manufacturer Part Number: BR10EG Product...
  • NGK BPR4ESSOLID Spark Plug Stock # 6578
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    NGK BPR4ESSOLID Spark Plug Stock # 6578
    $4.99 USD
    $4.99 USD
    $4.99 USD
    NGK BPR4ESSOLID Spark Plug Stock # 6578NGK BPR4ESSOLID is listed in the supplied catalog as spark plugs: Spark Plug Stock # 6578.Product Details Brand: NGK Manufacturer Part Number: BPR4ESSOLID ...
  • NGK BPMR7ASOLID Spark Plug Stock # 6703
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    NGK BPMR7ASOLID Spark Plug Stock # 6703
    $3.99 USD
    $3.99 USD
    $3.99 USD
    NGK BPMR7ASOLID Spark Plug Stock # 6703NGK BPMR7ASOLID is listed in the supplied catalog as spark plugs: Spark Plug Stock # 6703.Product Details Brand: NGK Manufacturer Part Number: BPMR7ASOLID ...
  • NGK BKR5ES Spark Plug Stock # 2460
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    NGK BKR5ES Spark Plug Stock # 2460
    $3.99 USD
    $3.99 USD
    $3.99 USD
    NGK BKR5ES Spark Plug Stock # 2460NGK BKR5ES is listed in the supplied catalog as spark plugs: Spark Plug Stock # 2460.Product Details Brand: NGK Manufacturer Part Number: BKR5ES Product Type: S...
  • NGK B9EG Spark Plug Stock # 3530
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    NGK B9EG Spark Plug Stock # 3530
    $5.99 USD
    $5.99 USD
    $5.99 USD
    NGK B9EG Spark Plug Stock # 3530NGK B9EG is listed in the supplied catalog as spark plugs: Spark Plug Stock # 3530.Product Details Brand: NGK Manufacturer Part Number: B9EG Product Type: Spark P...
  • NGK U5132 Ing Coil Near Plug Stock # 48713
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    NGK U5132 Ing Coil Near Plug Stock # 48713
    $53.99 USD
    $53.99 USD
    $53.99 USD
    NGK U5132 Ing Coil Near Plug Stock # 48713NGK U5132 is listed in the supplied catalog as ignition coils: Ing Coil Near Plug Stock # 48713.Product Details Brand: NGK Manufacturer Part Number: U513...
  • NGK TR55 V-power Plugs 3951
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    NGK TR55 V-power Plugs 3951
    $3.99 USD
    $3.99 USD
    $3.99 USD
    NGK TR55 V-power Plugs 3951NGK TR55 is listed in the supplied catalog as spark plugs: V-power Plugs 3951.Product Details Brand: NGK Manufacturer Part Number: TR55 Product Type: Spark Plugs Manuf...
  • NGK R5724-9 V-power Racing Plug 7891
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    NGK R5724-9 V-power Racing Plug 7891
    $3.99 USD
    $3.99 USD
    $3.99 USD
    NGK R5724-9 V-power Racing Plug 7891NGK R5724-9 is listed in the supplied catalog as spark plugs: V-power Racing Plug 7891.Product Details Brand: NGK Manufacturer Part Number: R5724-9 Product Ty...
  • NGK R5724-10 V-power Racing Plug 7993
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    NGK R5724-10 V-power Racing Plug 7993
    $3.99 USD
    $3.99 USD
    $3.99 USD
    NGK R5724-10 V-power Racing Plug 7993NGK R5724-10 is listed in the supplied catalog as spark plugs: V-power Racing Plug 7993.Product Details Brand: NGK Manufacturer Part Number: R5724-10 Product...
  • NGK R5673-6 V-power Racing Plug 2405
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    NGK R5673-6 V-power Racing Plug 2405
    $6.99 USD
    $6.99 USD
    $6.99 USD
    NGK R5673-6 V-power Racing Plug 2405NGK R5673-6 is listed in the supplied catalog as spark plugs: V-power Racing Plug 2405.Product Details Brand: NGK Manufacturer Part Number: R5673-6 Product Ty...
  • NGK PZFR6F-11 Spark Plug Stock # 3271
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    NGK PZFR6F-11 Spark Plug Stock # 3271
    $15.99 USD
    $15.99 USD
    $15.99 USD
    NGK PZFR6F-11 Spark Plug Stock # 3271NGK PZFR6F-11 is listed in the supplied catalog as spark plugs: Spark Plug Stock # 3271.Product Details Brand: NGK Manufacturer Part Number: PZFR6F-11 Produc...
  • NGK LTR5IX-11 Spark Plug Stock 4344
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    NGK
    NGK LTR5IX-11 Spark Plug Stock 4344
    $10.99 USD
    $10.99 USD
    $10.99 USD
    NGK LTR5IX-11 Spark Plug Stock 4344NGK LTR5IX-11 is listed in the supplied catalog as spark plugs: Spark Plug Stock 4344.Product Details Brand: NGK Manufacturer Part Number: LTR5IX-11 Product Ty...

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