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Old 03-26-2021, 07:57 AM
rayhennig rayhennig is offline
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Join Date: May 2009
Posts: 337
Quote:
Originally Posted by Ferdman View Post
Bosch F8DC4 spark plugs (gapped per the Owner's Manual spec) work best in the M104 engines.
My M104.980 has an original label that quotes Bosch, Beru and Champion spark plugs, together with their aftermarket part numbers. So, these are MB recommendations.

I currently have Beru, with an MB star, from the main dealer.

I have used aftermarket Beru, Bosch and NGK. Always the correct part numbers cross-referenced from the MB number. The MB EPC lists 3 MB numbers corresponding to Bosch, Beru and Champion aftermarket numbers.

No difference between them (over the 23 years I've had the car) so don't get too hung up about Bosch.

My last 2 batches of Berus (MB and aftermarket) were made in France.

My engine is the M104.980 but I think the later ones may take the same plugs.

Good hunting.

RayH
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