I have found a set of Bosch H8DC spark plugs which were OEM for my 1986 Mercedes 190e 2.3-16v. I typically cant find these plugs anywhere but online and then they are usually old stock. MB doesnt seem to have any more left. The autoparts stores locally dont seem to even know that they ever existed.
I am looking to see what the OEM spark plug gap was supposed to be set at. Can anyone tell me what the original H8DC spark plugs should be gapped at?
Thanks.

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Christopher Henkel
1990 190E 2.6 - Arctic white SOLD
1986 190E-16v - Blauswartze
1993 300CE - SOLD
2003 W208 CLK 320 Cabriolet - Magma Red