Bosch W9DC spark plug alternative?

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Bosch W9DC spark plug alternative?

11-04-2007, 06:16 PM

Roncallo

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Join Date: Oct 2004

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Quote:

Originally Posted by abe g

Can someone suggest replacement for hard to find Bosch w9dc spark plusgs for my 77 450 sl? closest is W9DC O. Is this a good replacement and what does O stand for? Any help appreciated. Abe G

The "O" stands for a larger diameter electrode. If you go to the dealer and order plugs for you car the W9DCO is what you will get.

John Roncallo

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