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B18 oil sender thread size. 120-130

posted by  sandyuman on  Thu Sep 23 16:07 CST 2010
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Can anyone clarify for me the actual thread used on the oil pressure sender switch on a B18 (The boring behind the exhaust manifold). Is it a 1/8 X 27 NPT or is it a 10mm X 1mm? Or perhaps a 1/8 BSPT? I attempted to thread in a 10mm X 1mm bolt and it binds up about a quarter inch in. That would suggest a 1/8 NPT but the threads per inch between that and a 10mm are damn close. Also, I can't tell if the cut is tapered or not. I'm trying to adapt for having both a pressure line for a gauge and an "idiot" light as well. Anybody got the authoritative answer for this one?






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New B18 oil sender thread size. [120-130]
posted by  sandyuman  on Thu Sep 23 16:07 CST 2010 >


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