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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Four NGK Copper V-Power LZTR5A-13 spark plugs with white ceramic insulators and V-cut nickel electrodes.

$40.96

In stock
NGK V-Power spark plug ZFR6F-11 showing the V-cut nickel alloy center electrode and trivalent metal plating.

$34.80

Low in stock
Set of four NGK Laser Iridium CR8EIA-9 spark plugs with trivalent metal plating and white ceramic insulators.

$104.32

In stock
Set of four NGK Laser Platinum spark plugs (BKR7EQUP) with platinum-tipped electrodes.

$94.48

In stock
Set of four NGK BPR4ES-11 standard series spark plugs with copper cores and white ceramic insulators.

$30.48

Low in stock
Set of four NGK Iridium IX CR8EIX spark plugs showing the fine wire center electrode and tapered ground electrode.

$90.60

In stock
NGK V-Power TR6 spark plugs set of 4 featuring V-cut electrodes and trivalent metal plating.

$30.76

In stock
Set of 4 NGK Racing R5671A-7 spark plugs with trivalent metal plating and corrugated ribs.

$69.52

In stock
NGK Iridium IX BPR7EIX spark plug set with fine wire iridium center electrodes and trivalent metal plating.

$90.60

In stock
NGK Iridium IX BR9EIX spark plug featuring a fine wire iridium center electrode and trivalent metal plating, box of 4.

$90.60

In stock
Box of four NGK BKR5EKU nickel alloy spark plugs with white ceramic insulators and silver trivalent metal plating.

$82.92

Low in stock
Four NGK BR8ES traditional spark plugs with white ceramic insulators and trivalent metal plating.

$32.60

In stock
Set of four NGK V-Power TR55 spark plugs featuring V-cut nickel alloy center electrodes and copper cores.

$36.04

In stock
Set of 4 NGK BPR8ES Standard spark plugs with copper core and nickel alloy electrodes in signature yellow packaging

$33.24

In stock
NGK BR6HS Standard spark plug featuring white ceramic insulator, nickel alloy electrode, and copper core in a 4-pack.

$32.60

In stock
Pack of four NGK Standard spark plugs CPR7EA-9 with white ceramic insulators and trivalent metal plated shells.

$80.20

In stock
Set of four NGK Racing BR10EG spark plugs featuring trivalent metal plating and a copper core for heat removal.

$67.68

In stock
NGK Iridium IX CR8EHIX-9 spark plug showing the 0.6mm fine wire iridium tip and tapered ground electrode.

$90.60

In stock
Set of four NGK Laser Iridium ILTR6A-8G spark plugs with iridium-tipped center electrodes.

$146.64

In stock
Four NGK Iridium IX spark plugs BKR6EIX-11 showing the trivalent plating and fine wire center electrode.

$90.60

In stock
NGK V-Power TR4 spark plug featuring a V-cut nickel alloy center electrode and trivalent metal plating.

$33.44

Low in stock
Set of four NGK Iridium IX TR8IX spark plugs showing the fine wire iridium tip and tapered ground electrode.

$90.60

In stock
Set of four NGK Iridium IX TR7IX spark plugs showing the tapered cut ground electrode and fine iridium center electrode.

$90.60

In stock
Set of 4 NGK Iridium IX TR6IX spark plugs featuring a fine-wire center electrode and tapered ground electrode.

$90.60

In stock
Set of four NGK V-Power LFR6A-11 spark plugs featuring nickel alloy electrodes and silver trivalent metal plating.

$79.52

In stock
Four NGK Laser Iridium IMR8C-9H spark plugs with iridium-tipped center electrodes and trivalent plating.

$153.56

In stock
Set of four NGK Racing B10EG spark plugs with white ceramic insulators and trivalent metal plating.

$51.56

In stock
Set of four NGK Iridium IX spark plugs (CR9EIX) with fine wire iridium tips and trivalent metal plated shells.

$90.60

In stock
Set of four NGK Standard DCPR6E spark plugs with nickel alloy electrodes and white corrugated ceramic insulators.

$49.56

In stock
Set of four NGK V-Power ZFR5N spark plugs featuring V-cut nickel alloy electrodes and trivalent metal plating.

$40.88

Low in stock

Can’t Find the Part You Need?

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