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In Reply to: Spark plugs posted by Stan on March 12, 2000 at 09:57:44:
I use the Bosch Super4 in my '93 540 and could not really notice a difference...however it seems to idle a bit smoother but then again ?! I don't remember the parts number, but try www.bosch.de: under products there is a like to car-parts...on one page you can enter your make & model / year to determine the ID of the spark plugs you need.