NGK 5728 Standard Spark Plug

The NGK 5728 is a standard copper core spark plug engineered for reliable ignition performance across a wide range of applications. As a direct OE replacement, this spark plug meets original equipment specifications for fit, durability, and performance.

Key Features:

• Copper core construction for excellent heat dissipation and conductivity
• Trivalent metal plating resists corrosion and seizing
• Triple-gasket seal prevents combustion gas leakage
• Solid terminal design for consistent electrical connection
• Cold-rolled threads prevent cross-threading and damage
• OE-quality construction for reliable starting and smooth operation

NGK's standard spark plugs utilize a traditional copper core electrode that provides superior thermal conductivity, allowing the plug to quickly reach optimal operating temperature and efficiently dissipate heat during combustion. The corrugated ribs on the insulator prevent flashover, while the triple-gasket seal ensures a gas-tight fit in the cylinder head. Backed by over 80 years of ignition expertise, NGK spark plugs are manufactured to meet or exceed OE specifications for lasting performance.