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Genuine BMW High Power Spark Plugs
• Optimal functioning throughout service life
• Iridium and platinum – hard and chemical-resistant
• Exact heat range
• Guaranteed performance for cold starting, idling and acceleration through semi-slide spark technology
• Optimal catalytic converter protection
• 100% reliable ignition through 100% material quality
• Housing treated against corrosion
• Quadruple barrier against creeping current
Function in detail
– For normal driving, the spark plug must withstand voltage discharges from 20 – 30 kV, 55 times per second; in "stop and go" traffic, it
must resist wear-inducing load changes; and in cold starts, it must withstand soot deposits.
– To reduce spark erosion and to guarantee a reliable ignition, Genuine BMW High Power Spark Plugs use highly erosion-resistant
materials like iridium or platinum in conjunction with ground electrodes.
– The spark plugs’ heat range is an index of its capacity to absorb and dissipate thermal energy.
– The characteristics of each BMW engine with regard to load, sealing, engine speed, cooling and fuel require a spark plug exactly matched
to these requirements. Every engine variant has its own specification of Genuine BMW High Power Spark Plug to guarantee high
efficiency.
– The insulator in which the centre electrode is located determines its heat conductivity and prevents uncontrolled arcing.
– Through semi-slide spark technology, the ignition spark always occurs over the insulator tip every time to clear away any possible
deposits. This achieves optimal soot deposit prevention.
Benefits
Optimal functioning throughout service life
To extend the lifetime of a spark plug and to guarantee reliable ignition, up to four ground electrodes are specified. Another way of
increasing ignition reliability is the use of high-grade materials such as platinum or iridium. These materials, which have a high degree of
erosion resistance, are a feature of all Genuine BMW High Power Spark Plugs.
Iridium and platinum – hard and chemical resistant
Both precious metals are exceptionally hard and resistant to chemical processes in the combustion chamber, aggressive residues and
thermal load. They possess optimal ignition characteristics at lower voltage and prevent sooting in "stop and go" traffic. The optimised
electrode form reduces the ignition voltage requirement and protects the engine from damage. High ignition reliability, uniform combustion
in all speed ranges and optimal engine performance reduce emissions, protect the catalytic converter from damage and thus protect the
environment.
Exact heat range
The heat range is the measurement of the permissible thermal load of a spark plug. It describes its ability to dissipate absorbed combustion
heat. On the one hand, a spark plug must reach its free burning temperature (approx. +400 °C) as quickly as possible for a cold start, and
on the other hand not become too hot for motorway driving (max. +850 °C) to prevent pre-ignition. Genuine BMW High Power Spark Plugs
are specially manufactured and matched to their respective engine electronics.
Guaranteed performance for cold starting, idling and acceleration through semi-slide spark technology
The semi-slide spark technology of Genuine BMW High Power Spark Plugs prevents deposits and malfunctions. This benefits cold
starting; the engine runs "smoother" at idle and is responsive under acceleration.
Optimal catalytic converter protection
Semi-slide spark technology provides optimum spark position for the best response characteristics. A longer electrode extends into the
combustion chamber and thus always ensures reliable ignition and optimal combustion of the mixture. This reduces the risk of unburned
residual fuel-air mixture igniting in the catalytic converter and damaging it.
100% reliable ignition through 100% material quality
To ensure optimal ignition reliability even on short drives or in "stop and go" traffic, the centre electrodes on Genuine BMW High Power
Spark Plugs feature a platinum disk and the insulators are manufactured out of a special ceramic. This allows the spark plugs to withstand a
combustion pressure of 40 Bar and higher, vibration, temperatures up to approx. +850 °C and chemical additives in the fuel or oil.
Housing treated against corrosion
The spark plug housing is made of special surface-treated steel. This ensures that corrosion and seizing of the thread is prevented even
after a long operating life, so that the aluminium cylinder head remains undamaged.
Quadruple barrier against creeping current
Creeping currents are "misdirections" of the voltage that are caused by contamination or moisture on the surface of the spark plug that can
lead to misfiring. The insulators of Genuine BMW High Power Spark Plugs have four ring-shaped profiles barriers. This prevents creeping
currents, which means the spark is created where it is needed: between the electrodes.
Each Genuine BMW High Power Spark Plugs is optimally matched to the characteristics of each BMW engine’s electronics.
This ensures constant conductivity even under extreme conditions.
Cooperation with spark plug specialists
The spark plug technology of Genuine BMW High Power Spark Plugs is the result of long co-operative development with spark plug
specialists. The spectrum ranges from top to side electrodes to complex semi-slide spark technology.
Decades of expertise
BMW builds on decades of successful, proven and tested know-how and makes no compromises. As a result, Genuine BMW High Power
Spark Plugs are optimally matched to each specific engine – both for series installation in all BMW engines and for the after-market when
replacements are due.
Matched to computer controlled engine management systems
As Genuine BMW High Power Spark Plugs are all optimally matched to the BMW engine’s computer-controlled management systems,
precise ignition is guaranteed. As a pioneer in digital motor electronics, BMW has contributed significantly to the development of suitable
spark plugs.
Advantages of Genuine BMW High Power Spark Plugs
– Optimal functioning during the entire service life
– Extremely long operating life
– Different spark plugs for different engine characteristics
– Iridium and platinum – hard and chemical resistant
– High erosion resistance
– Exact heat range matched to specific engine electronics
– Optimal cold starting, idling and acceleration behaviour
– Catalytic converter protection through preferred spark length
– 100% material quality
– Quadruple barrier against creeping current