NGK Spark plug
Huge selection of NGK spark plugs
NGK from Japan is a global leader in ignition technology and has stood for top quality and reliability for decades. Their spark plugs are used in countless 50cc scooters, delivering long service life and strong performance. Whether you’re looking for a standard plug for everyday riding or a racing version for high performance setups – you’ll find the right NGK spark plugs here in a wide selection and at great prices.
Short base candle
B7HS, B8HS, B9HS, B10HS, BR7HS, BR8HS, BR9HS.Candle long base
B7ES, B8ES, B9ES, B10ES, BR7ES, BR8ES, BR9ES.Platinium short and long base candles
B9HVX, B8EVX, B9EVX, B10EVX, B10HVX.Iridium long base candle
BR9EIX, BR10EIX.Gold Palladium long base candle
BP-E10, B-E10, B-E10,5.4-stroke and injection spark plugs
CPR8E, CR7HSA.
Spark plug - the crucial spark
For an engine to come to life, it needs the right spark plug. This is the component that, with the help of high voltage from the ignition coil, generates the vital spark between the electrodes. Without it, nothing works – only the combination of air, fuel, and spark creates the combustion needed to drive the engine.
NGK spark plugs connect to the ignition coil via the plug cap. Their smart design ensures a secure connection that won’t come loose, even under heavy engine vibrations or bumps in the road. The electrodes conduct electricity and generate the spark required to ignite the mixture. The gap between the electrodes is no accident, it’s set by the engine manufacturer, taking into account compression ratio, fuel type, coil output, and the required energy.
The electrodes are usually coated with alloys such as nickel, silver, or platinum. This is essential, because overheated electrodes can cause pre-ignition, which in the worst case may damage the piston. At the same time, the spark plug must reliably transfer heat to the cylinder head. That means the insulator has to dissipate heat effectively, and the contact between plug and cylinder head must be flawless.
Most of the heat is carried away through the thread and sealing ring, with the rest dissipated through the top of the spark plug into the cylinder head. How a spark plug performs under different temperatures is defined by its heat range. “Cold” plugs have a low heat range, absorb little heat, and dissipate it very efficiently – making them ideal for high-performance engines running at extreme temperatures. “Hot” plugs, on the other hand, have a high heat range, absorb more heat, and dissipate less. This heat range is determined by the length of the insulator tip: the longer the tip, the hotter the plug. In a cold plug, the path between electrode, insulator, and shell is shorter, allowing for faster heat dissipation.