NGK 4172 Standard Spark Plug

The NGK 4172 is a standard copper core spark plug designed to deliver reliable ignition performance for a wide range of automotive, motorcycle, marine, and small engine applications. As an OE-quality replacement plug, the 4172 features NGK's proven construction with a copper core center electrode for superior heat dissipation and conductivity.

Key Features:

• Copper core center electrode for excellent heat dissipation and conductivity
• Trivalent metal plating for superior anti-corrosion and anti-seizing properties
• Cold-rolled threads to prevent cross-threading and damage to cylinder heads
• Triple gasket seal to eliminate combustion gas leakage
• Pure alumina silicate ceramic insulator for superior strength and heat transfer
• Corrugated ribs on insulator prevent flashover

NGK standard spark plugs provide OE-quality performance and durability at an economical price point. The 4172 is manufactured to exacting tolerances using high-quality materials, ensuring consistent performance and long service life. NGK's copper core technology allows for a larger center electrode that improves ignitability while maintaining efficient heat range characteristics.

Backed by over 80 years of ignition expertise, NGK spark plugs are trusted by automotive manufacturers and technicians worldwide for their reliability and consistent performance across millions of miles of operation.