NGK Spark Plug Stock # 92400

The NGK Spark Plug Stock # 92400 is a precision-engineered ignition component designed for reliable engine starting and consistent combustion across a wide range of automotive applications. This spark plug, identified as NGK's FR7BHX-S variant, is ideal for both stock and lightly modified engines where dependable spark delivery is essential. Whether you're maintaining daily drivers, restoring classics, or tuning street machines, quality spark plugs are fundamental for efficient fuel burn and responsive throttle response.

NGK's construction of this plug emphasizes durable ceramic insulation and a precisely gapped center electrode that maintains consistent spark energy across the RPM band. The FR7BHX-S features a trivalent metal plating that resists corrosion and extends electrode life compared to standard copper-core designs, making it particularly suitable for vehicles exposed to moisture or stored seasonally. The compact design fits within standard spark plug wells, ensuring no interference with headers, intake manifolds, or custom engine bay layouts.

This NGK spark plug is compatible with a diverse range of engines, from inline-four commuters to small-displacement V6 and V8 platforms, making it an essential backup stock item for any shop or enthusiast garage. Installation is straightforward—remove the old plug, confirm the gap set to 0.028–0.032 inches for your engine, and install the new plug for optimal performance.