Thread: Bosch W9DC spark plug alternative?
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Old 11-03-2007, 03:49 PM
abe g abe g is offline
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Join Date: Feb 2003
Location: roslyn, LI,NY
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Bosch W9DC spark plug alternative?
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
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