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 DR8EA Spark Plug Stock # 7162 (motorcycle/marine)

No reviews

Regular price

$3.99 USD

Regular price

~~$3.99 USD~~

Sale price

$3.99 USD

Unit price

per

NGK DR8EA Spark Plug Stock # 7162 (motorcycle/marine)NGK DR8EA is listed in the supplied catalog as spark plugs: Spark Plug Stock # 7162 (motorcycle/marine).Product Details Brand: NGK Manufacture...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK CR9EK Spark Plug Stock # 4548

No reviews

Regular price

$11.99 USD

Regular price

~~$11.99 USD~~

Sale price

$11.99 USD

Unit price

per

NGK CR9EK Spark Plug Stock # 4548NGK CR9EK is listed in the supplied catalog as spark plugs: Spark Plug Stock # 4548.Product Details Brand: NGK Manufacturer Part Number: CR9EK Product Type: Spar...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK CR9EB Spark Plug Stock # 6955

No reviews

Regular price

$7.99 USD

Regular price

~~$7.99 USD~~

Sale price

$7.99 USD

Unit price

per

NGK CR9EB Spark Plug Stock # 6955NGK CR9EB is listed in the supplied catalog as spark plugs: Spark Plug Stock # 6955.Product Details Brand: NGK Manufacturer Part Number: CR9EB Product Type: Spar...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK CMR6H Spark Plug Stock # 3365

No reviews

Regular price

$6.99 USD

Regular price

~~$6.99 USD~~

Sale price

$6.99 USD

Unit price

per

NGK CMR6H Spark Plug Stock # 3365NGK CMR6H is listed in the supplied catalog as spark plugs: Spark Plug Stock # 3365.Product Details Brand: NGK Manufacturer Part Number: CMR6H Product Type: Spar...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK BR9ESSOLID Spark Plug Stock # 3194

No reviews

Regular price

$3.99 USD

Regular price

~~$3.99 USD~~

Sale price

$3.99 USD

Unit price

per

NGK BR9ESSOLID Spark Plug Stock # 3194NGK BR9ESSOLID is listed in the supplied catalog as spark plugs: Spark Plug Stock # 3194.Product Details Brand: NGK Manufacturer Part Number: BR9ESSOLID Pro...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK BR9EG Spark Plug Stock # 3230

No reviews

Regular price

$7.99 USD

Regular price

~~$7.99 USD~~

Sale price

$7.99 USD

Unit price

per

NGK BR9EG Spark Plug Stock # 3230NGK BR9EG is listed in the supplied catalog as spark plugs: Spark Plug Stock # 3230.Product Details Brand: NGK Manufacturer Part Number: BR9EG Product Type: Spar...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK BR8EQ-14 Spark Plug Stock # 2329

No reviews

Regular price

$9.99 USD

Regular price

~~$9.99 USD~~

Sale price

$9.99 USD

Unit price

per

NGK BR8EQ-14 Spark Plug Stock # 2329NGK BR8EQ-14 is listed in the supplied catalog as spark plugs: Spark Plug Stock # 2329.Product Details Brand: NGK Manufacturer Part Number: BR8EQ-14 Product T...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK BPZ8HS-10 Spark Plug Stock 3133

No reviews

Regular price

$12.99 USD

Regular price

~~$12.99 USD~~

Sale price

$12.99 USD

Unit price

per

NGK BPZ8HS-10 Spark Plug Stock 3133NGK BPZ8HS-10 is listed in the supplied catalog as spark plugs: Spark Plug Stock 3133.Product Details Brand: NGK Manufacturer Part Number: BPZ8HS-10 Product Ty...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK BPR7EIX Spark Plug Stock # 4055 (motorcycle)

No reviews

Regular price

$10.99 USD

Regular price

~~$10.99 USD~~

Sale price

$10.99 USD

Unit price

per

NGK BPR7EIX Spark Plug Stock # 4055 (motorcycle)NGK BPR7EIX is listed in the supplied catalog as spark plugs: Spark Plug Stock # 4055 (motorcycle).Product Details Brand: NGK Manufacturer Part Num...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK BPR5ES Spark Plug Stock 7734

No reviews

Regular price

$3.99 USD

Regular price

~~$3.99 USD~~

Sale price

$3.99 USD

Unit price

per

NGK BPR5ES Spark Plug Stock 7734NGK BPR5ES is listed in the supplied catalog as spark plugs: Spark Plug Stock 7734.Product Details Brand: NGK Manufacturer Part Number: BPR5ES Product Type: Spark...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK BKR8EIX Spark Plug Stock 2668

No reviews

Regular price

$9.99 USD

Regular price

~~$9.99 USD~~

Sale price

$9.99 USD

Unit price

per

NGK BKR8EIX Spark Plug Stock 2668NGK BKR8EIX is listed in the supplied catalog as spark plugs: Spark Plug Stock 2668.Product Details Brand: NGK Manufacturer Part Number: BKR8EIX Product Type: Sp...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK BKR7E Spark Plug Stock # 4644

No reviews

Regular price

$3.99 USD

Regular price

~~$3.99 USD~~

Sale price

$3.99 USD

Unit price

per

NGK BKR7E Spark Plug Stock # 4644NGK BKR7E is listed in the supplied catalog as spark plugs: Spark Plug Stock # 4644.Product Details Brand: NGK Manufacturer Part Number: BKR7E Product Type: Spar...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK BKR6EKU Spark Plug Stock # 6993

No reviews

Regular price

$7.99 USD

Regular price

~~$7.99 USD~~

Sale price

$7.99 USD

Unit price

per

NGK BKR6EKU Spark Plug Stock # 6993NGK BKR6EKU is listed in the supplied catalog as spark plugs: Spark Plug Stock # 6993.Product Details Brand: NGK Manufacturer Part Number: BKR6EKU Product Type...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK BCP6ET Spark Plug Stock 4563

No reviews

Regular price

$6.99 USD

Regular price

~~$6.99 USD~~

Sale price

$6.99 USD

Unit price

per

NGK BCP6ET Spark Plug Stock 4563NGK BCP6ET is listed in the supplied catalog as spark plugs: Spark Plug Stock 4563.Product Details Brand: NGK Manufacturer Part Number: BCP6ET Product Type: Spark...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK UR4GP Spark Plug Stock # 2869

No reviews

Regular price

$4.99 USD

Regular price

~~$4.99 USD~~

Sale price

$4.99 USD

Unit price

per

NGK UR4GP Spark Plug Stock # 2869NGK UR4GP is listed in the supplied catalog as spark plugs: Spark Plug Stock # 2869.Product Details Brand: NGK Manufacturer Part Number: UR4GP Product Type: Spar...
Sold out

Add to wishlist

View Wishlist

Vendor:
NGK
NGK U5304 COP Ignition Coil Stock # 49020

No reviews

Regular price

$52.99 USD

Regular price

~~$52.99 USD~~

Sale price

$52.99 USD

Unit price

per

NGK U5304 COP Ignition Coil Stock # 49020NGK U5304 is listed in the supplied catalog as ignition coils: COP Ignition Coil Stock # 49020.Product Details Brand: NGK Manufacturer Part Number: U5304 ...