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...

Showing 361 of 361 products

Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK R6061-9 Racing Plug # 4074

No reviews

Regular price

$10.99 USD

Regular price

~~$10.99 USD~~

Sale price

$10.99 USD

Unit price

per

NGK R6061-9 Racing Plug # 4074NGK R6061-9 is listed in the supplied catalog as spark plugs: Racing Plug # 4074.Product Details Brand: NGK Manufacturer Part Number: R6061-9 Product Type: Spark Pl...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK U5076 COP Ignition Coil Stock # 48726

No reviews

Regular price

$55.99 USD

Regular price

~~$55.99 USD~~

Sale price

$55.99 USD

Unit price

per

NGK U5076 COP Ignition Coil Stock # 48726NGK U5076 is listed in the supplied catalog as ignition coils: COP Ignition Coil Stock # 48726.Product Details Brand: NGK Manufacturer Part Number: U5076 ...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK IZFR6K-11S Spark Plug Stock # 5266

No reviews

Regular price

$14.99 USD

Regular price

~~$14.99 USD~~

Sale price

$14.99 USD

Unit price

per

NGK IZFR6K-11S Spark Plug Stock # 5266NGK IZFR6K-11S is listed in the supplied catalog as spark plugs: Spark Plug Stock # 5266.Product Details Brand: NGK Manufacturer Part Number: IZFR6K-11S Pro...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK LKAR8BHX Spark Plug Stock # 91784

No reviews

Regular price

$15.99 USD

Regular price

~~$15.99 USD~~

Sale price

$15.99 USD

Unit price

per

NGK LKAR8BHX Spark Plug Stock # 91784NGK LKAR8BHX is listed in the supplied catalog as spark plugs: Spark Plug Stock # 91784.Product Details Brand: NGK Manufacturer Part Number: LKAR8BHX Product...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK LTR6AHX Spark Plug Stock # 91276

No reviews

Regular price

$16.99 USD

Regular price

~~$16.99 USD~~

Sale price

$16.99 USD

Unit price

per

NGK LTR6AHX Spark Plug Stock # 91276NGK LTR6AHX is listed in the supplied catalog as spark plugs: Spark Plug Stock # 91276.Product Details Brand: NGK Manufacturer Part Number: LTR6AHX Product Ty...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK BR8EIX Spark Plug Stock # 5044 (snowmobile)

No reviews

Regular price

$11.99 USD

Regular price

~~$11.99 USD~~

Sale price

$11.99 USD

Unit price

per

NGK BR8EIX Spark Plug Stock # 5044 (snowmobile)NGK BR8EIX is listed in the supplied catalog as spark plugs: Spark Plug Stock # 5044 (snowmobile).Product Details Brand: NGK Manufacturer Part Numbe...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK BKR7EQUP Spark Plug Stock # 4285

No reviews

Regular price

$8.99 USD

Regular price

~~$8.99 USD~~

Sale price

$8.99 USD

Unit price

per

NGK BKR7EQUP Spark Plug Stock # 4285NGK BKR7EQUP is listed in the supplied catalog as spark plugs: Spark Plug Stock # 4285.Product Details Brand: NGK Manufacturer Part Number: BKR7EQUP Product T...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK CR9EIX Spark Plug Stock # 3521

No reviews

Regular price

$10.99 USD

Regular price

~~$10.99 USD~~

Sale price

$10.99 USD

Unit price

per

NGK CR9EIX Spark Plug Stock # 3521NGK CR9EIX is listed in the supplied catalog as spark plugs: Spark Plug Stock # 3521.Product Details Brand: NGK Manufacturer Part Number: CR9EIX Product Type: S...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK BPR6EIX Spark Plug Stock #6637

No reviews

Regular price

$8.99 USD

Regular price

~~$8.99 USD~~

Sale price

$8.99 USD

Unit price

per

NGK BPR6EIX Spark Plug Stock #6637NGK BPR6EIX is listed in the supplied catalog as spark plugs: Spark Plug Stock #6637.Product Details Brand: NGK Manufacturer Part Number: BPR6EIX Product Type: ...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK 91418 Spark Plug Spark Plugs

No reviews

Regular price

$14.99 USD

Regular price

~~$14.99 USD~~

Sale price

$14.99 USD

Unit price

per

NGK 91418 Spark Plug Spark PlugsNGK 91418 is listed in the supplied catalog as spark plugs: Spark Plug Spark Plugs.Product Details Brand: NGK Manufacturer Part Number: 91418 Product Type: Spark ...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK BKR6EGP Spark Plug Stock # 7092

No reviews

Regular price

$7.99 USD

Regular price

~~$7.99 USD~~

Sale price

$7.99 USD

Unit price

per

NGK BKR6EGP Spark Plug Stock # 7092NGK BKR6EGP is listed in the supplied catalog as spark plugs: Spark Plug Stock # 7092.Product Details Brand: NGK Manufacturer Part Number: BKR6EGP Product Type...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK B10ES Spark Plug Stock 7928

No reviews

Regular price

$3.99 USD

Regular price

~~$3.99 USD~~

Sale price

$3.99 USD

Unit price

per

NGK B10ES Spark Plug Stock 7928NGK B10ES is listed in the supplied catalog as spark plugs: Spark Plug Stock 7928.Product Details Brand: NGK Manufacturer Part Number: B10ES Product Type: Spark Pl...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK CR9EIA-9 Spark Plug Stock # 6289

No reviews

Regular price

$11.99 USD

Regular price

~~$11.99 USD~~

Sale price

$11.99 USD

Unit price

per

NGK CR9EIA-9 Spark Plug Stock # 6289NGK CR9EIA-9 is listed in the supplied catalog as spark plugs: Spark Plug Stock # 6289.Product Details Brand: NGK Manufacturer Part Number: CR9EIA-9 Product T...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK BR6HS Spark Plug Stock # 3922

No reviews

Regular price

$3.99 USD

Regular price

~~$3.99 USD~~

Sale price

$3.99 USD

Unit price

per

NGK BR6HS Spark Plug Stock # 3922NGK BR6HS is listed in the supplied catalog as spark plugs: Spark Plug Stock # 3922.Product Details Brand: NGK Manufacturer Part Number: BR6HS Product Type: Spar...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK BKR9EIX Spark Plug Stock 2669

No reviews

Regular price

$10.99 USD

Regular price

~~$10.99 USD~~

Sale price

$10.99 USD

Unit price

per

NGK BKR9EIX Spark Plug Stock 2669NGK BKR9EIX is listed in the supplied catalog as spark plugs: Spark Plug Stock 2669.Product Details Brand: NGK Manufacturer Part Number: BKR9EIX Product Type: Sp...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK BR9EYA Snowmobile Spark Plug Stock 7548

No reviews

Regular price

$6.99 USD

Regular price

~~$6.99 USD~~

Sale price

$6.99 USD

Unit price

per

NGK BR9EYA Snowmobile Spark Plug Stock 7548NGK BR9EYA is listed in the supplied catalog as spark plugs: Snowmobile Spark Plug Stock 7548.Product Details Brand: NGK Manufacturer Part Number: BR9EY...