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O2 sensor bungs, what size?

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Old Jun 9, 2011 | 04:57 PM
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spader2
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From: travis AFB
Default O2 sensor bungs, what size?

ive got an 08 nightster and I just got some rinehart pipes for it, but they need the O2 sensor bungs welded in. is the size i need 12 x 1.25mm or 18 x 1.5mm?
 
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