Spark Plugs

Spark plugs ignite the air-fuel mixture in your engine's cylinders, making them one of the most critical components for reliable starting, smooth idling, and optimal fuel efficiency. Whether you're performing routine maintenance, chasing an elusive misfire, or building a high-compression forced-induction engine, the right plug makes a measurable difference.

This collection brings together spark plugs for a wide range of applications, from daily-driven commuters to dedicated race cars. Use the filters to narrow by thread size, reach, and heat range, or browse by electrode material:

  • Copper – Excellent conductivity, ideal for older engines and performance applications where frequent changes are acceptable.
  • Platinum – Long service life and consistent performance, commonly specified for modern engines with high-energy ignition systems.
  • Iridium – Extremely hard, fine-wire center electrode reduces voltage requirements and extends change intervals, often found in late-model and high-output engines.
  • Double Platinum / Double Iridium – Enhanced durability for waste-spark ignition systems, with precious metal on both electrodes.

When selecting a plug, verify the manufacturer's recommended heat range and gap setting. A plug that's too cold may foul during low-speed driving, while one that's too hot can lead to pre-ignition and engine damage. All plugs in this collection meet or exceed OEM specifications for durability and performance, giving you confidence with every ignition cycle.

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NGK Racing Spark Plug R2556G-10 showing the electrode, trivalent plating, and alumina silicate ceramic insulator.

$438.52

In stock
Set of four NGK Laser Iridium SILMAR8A9S spark plugs with trivalent plated shells and iridium tips.

$159.36

In stock
NGK Laser Iridium MR7BI-8 spark plug with trivalent metal plating and iridium-tipped center electrode

$147.68

Low in stock
Four NGK Laser Iridium ILZKR8C8G spark plugs with white ceramic insulators and trivalent plated metal shells.

$144.68

Low in stock
Set of four NGK Standard KR9C-G spark plugs with white ceramic insulators and yellow retail packaging.

$82.32

In stock
NGK Laser Iridium ILTR7E9 spark plug set featuring iridium center tips and platinum ground pads.

$107.20

In stock
NGK Laser Iridium LMAR9AI-8D spark plug showing the terminal nut, ceramic insulator, and threaded metal shell.

$162.52

In stock
Set of four NGK Ruthenium HX LTR6BHX spark plugs with fine wire electrodes and trivalent metal plating.

$130.16

In stock
Box of 4 NGK Laser Iridium ILZKR7G7G spark plugs showing the fine-wire center electrode and metal plating.

$151.72

Low in stock
Four NGK Iridium IX DCPR6EIX spark plugs showing the fine-wire iridium tip and trivalent plating.

$90.60

Low in stock
NGK Standard Spark Plug BR8ES-11 box of 4 featuring nickel alloy electrode and trivalent metal plating

$32.60

In stock
Set of four NGK Laser Platinum spark plugs (PZFR5D-11) with platinum-tipped electrodes and white ceramic insulators.

$123.48

Low in stock
Set of four NGK Laser Platinum PFR7Q spark plugs featuring corrugated ceramic insulators and trivalent metal plated shells.

$134.28

Low in stock
Set of four NGK V-Power BKR5E spark plugs featuring V-cut nickel alloy center electrodes and trivalent metal plating.

$33.92

In stock
Set of four NGK Laser Iridium SILFR6A spark plugs featuring iridium center electrodes and trivalent plated metal shells.

$152.32

Low in stock
NGK Standard Series D7EA spark plugs in a pack of 10 showing the yellow box packaging and copper core construction.

$80.30

In stock
NGK Laser Iridium IJR7A9 spark plug set showing the fine-wire iridium center electrode and ceramic insulator.

$153.56

In stock
NGK DR7EA Standard Spark Plug with nickel alloy electrode and trivalent metal plated threads.

$81.50

In stock
NGK BPR4HS Standard spark plug box of 10 featuring nickel alloy construction and copper core.

$76.20

In stock
NGK BPR9ES traditional spark plug with ceramic insulator, copper core, and trivalent metal plated shell.

$32.60

In stock
NGK CR8EB standard spark plug featuring a white ceramic insulator and threaded nickel alloy electrode.

$79.92

In stock
Four NGK Laser Platinum PFR7G-11S spark plugs with trivalent metal plating and corrugated ceramic insulators.

$134.48

In stock
Set of 4 NGK Laser Iridium IFR7G-11KS spark plugs with iridium center electrode and platinum ground pad.

$141.92

In stock
Set of four NGK BPR5ES standard nickel spark plugs with copper core and trivalent metal plating.

$30.64

In stock
NGK BPR5ES-11 Standard spark plugs in a four-pack yellow retail box.

$32.60

In stock
Box of 4 NGK Laser Iridium IZKR7B spark plugs with iridium-tipped center electrodes and alumina silicate insulators.

$136.80

In stock
Set of 4 NGK Laser Iridium IMR9E-9HES spark plugs featuring iridium-tipped center electrodes and copper cores.

$154.24

In stock
Set of four NGK BR9EYA V-Power spark plugs with nickel electrodes and white corrugated insulators.

$46.96

In stock
Set of four NGK Standard C9E spark plugs featuring copper cores and trivalent metal plating.

$42.12

In stock
Set of four NGK Laser Platinum DCPR8EKP spark plugs with platinum electrodes and ceramic insulators.

$130.44

In stock

Can’t Find the Part You Need?

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