NGK is a leading global manufacturer of premium spark plugs, ignition coils, oxygen sensors, and advanced technical ceramics for automotive and industrial engines.
NGK Spark Plugs is a renowned global leader in the design and manufacturing of top-tier automotive ignition components and advanced technical ceramics.
For decades, NGK has been the go-to brand for high-performance spark plugs, ignition coils, glow plugs, and specialized sensors under both the NGK and NTK brand names. Trusted by automotive professionals, racing enthusiasts, and original equipment manufacturers (OEMs), NGK ensures optimal engine performance, efficiency, and reliability across a vast array of vehicles ranging from cars and motorcycles to marine and industrial engines.
Beyond standard replacement parts, NGK continually innovates with cutting-edge materials like Iridium and Ruthenium to provide superior durability and consistent performance under extreme conditions.
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You can find the right spark plug by checking your vehicle owner's manual for OEM specifications or by using the Part Finder tool on the official NGK Spark Plugs website.
Torque specifications vary depending on the thread size and whether the cylinder head is aluminum or cast iron. Typically, you should hand tighten the plug until it seats, then turn it an additional 1/4 to 1/2 turn, or use a torque wrench to apply 15-25 N·m for aluminum and 20-30 N·m for cast iron. Always consult your specific spark plug manual.
Most NGK spark plugs come pre-gapped from the factory for specific applications. However, it is always recommended to verify the gap with a wire-type gap tool before installation to ensure it matches your engine's precise requirements.
The warranty on NGK products typically covers manufacturing defects in materials and workmanship. Damage caused by improper installation, tuning, or misuse is not covered. For complete warranty terms, visit the official NGK warranty page.
Replacement intervals depend on the plug material and your vehicle's engine. Generally, standard nickel plugs last 20,000-30,000 kilometers, while platinum or iridium plugs can last 60,000-100,000 kilometers. Check your vehicle's maintenance guide for exact intervals.