Spark Plug NGK BR6HS

Function and technical context

The spark plug is the component responsible for generating the electrical spark that ignites the fuel and air mixture inside the cylinder, thus initiating the combustion cycle in two and four-stroke gasoline engines. It operates in the ignition system of the outboard motor, subjected to continuous cycles of high voltage, pressure and extreme temperature with each explosion. A faulty spark plug causes incomplete or irregular combustion, resulting in difficult starting, rough idle, loss of power and increased fuel consumption. The NGK BR6HS reference is designed to provide reliable and consistent spark in outboard motors from the leading brands in the marine market, guaranteeing engine performance across the entire operating range.

When to replace this part?

The most common symptoms of a worn or faulty spark plug include difficulty starting the engine in cold conditions, jerking or shuddering during navigation, unstable idle and visible increase in gasoline consumption. As a general guideline for outboard motors, it is recommended to inspect and replace spark plugs every 100 operating hours or at the beginning of each boating season, whichever comes first. Changing spark plugs preventively before noticing a fault prevents being left without propulsion while underway and protects other components of the ignition system from overload caused by deficient ignition.

Equivalent manufacturer references