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Old 08-18-2008, 12:01 AM
Arthur Dalton Arthur Dalton is offline
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Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,804
Originally Posted by Ferdman View Post
Arthur, why wouldn't Bosch F8DC4 spark plugs be acceptable for the 103 engines?

Physically different...

One is a tapered seat plug [ Conical seat ] and the other is a compression Ring gasket plug [ Flat seat]
H and F ..completely different head seating.
A Dalton

Last edited by Arthur Dalton; 08-18-2008 at 12:17 AM.
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