3 Series E36 318ti (M44) COMP
MK-21/Tikkanen
Baugruppe/Group: 12
12 05 98 (368)
Weltweit
All countries
10/1998
BMW High Power spark plugs
All models
Situation:
"Longlife" spark plugs have for the first time been approved for the start of series
production of the new 3 Series E46. As of Model Year 1999, all other BMW models will also
be equipped with these spark plugs. Moreover, these spark plugs can also be used with
immediate effect in certain engines (see retrospective approval).
The new spark plug has the following design features:
-
Four earth electrodes
-
Centre electrode with platinum plate
-
Semi-surface discharge technology
On semi-surface discharge spark plugs, the electrodes are designed in such a way that the
spark will always slide over the insulator before it flashes. This prevents sooty deposits from
forming and so pre-empts misfiring.
The spark always flashes at the point on the electrode which will give the best combustion
conditions. In this way, the electrodes will wear evenly throughout the service life of the
spark plug. The platinum plate on the centre electrode is highly resistant to spark erosion.
This design allows operation to be maintained consistently at an optimum level for the
entire service life between the change intervals.
Benefits of semi-surface discharge technology:
-
Outstanding cold-start performance.
-
Improved combustion characteristics, providing for higher idle quality and better
acceleration performance.
-
No misfiring on load change or full load.
-
Maximum ignition reliability, even in extreme short journeys or in stop & go traffic,
protects against damage to the catalytic converter.
-
Consistently high level of operation throughout the entire service life.
-
Up to double the service life, depending on the model.
-
High degree of safety reserves when vehicles are run under difficult operating
conditions.
Affected
vehicles:
E46 with M43TU, M52TU
Manufacturing period: since start of series production
E36/7 with M43TU, M52TU
Manufacturing period: since September 1998
E36 US, E38 US, E39 US with M52, M62
Manufacturing period: since September 1997
E38 with M52TU, M62LEV, M73LEV
Manufacturing period: since September 1998
E39 with M52TU, M62LEV
Manufacturing period: since September 1998
E39/M5 with S62
Manufacturing period: since start of series production
SI BMW High Power spark plugs All models
BMW AG - TIS
06.02.2013 19:17
Issue status (12/2007) Valid only until next DVD is issued
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