2020 FXDC thread size help
My Dyna needs some threads cleaned. I noticed my spark plug threads are a bit gunked up as well as the threads for my breather bolts. I have read that a thread chaser is recommended. Does anyone know the sizes needed for both these holes? I've been searching and haven't found any definite answer. I believe the breather holes may be 3/8 - 16 but not sure. Also, any idea where I would be able to pick the correct size chasers locally? Any help would be greatly appreciated!
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First, assume you mean 2010 FXDC and not 2020 like the title says. Anywho, the breather bolts are actually 3/8 x 1.525. Spark plugs are 12MM x 1.25
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Most auto parts stores will have an M12 x 1.25 spark plug/oxygen sensor thread chaser in stock.
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All TC head breathers are 3/8-16 like you say.. Plugs 12mmx1.25mm as dawg says..
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Originally Posted by dawg
(Post 18208939)
First, assume you mean 2010 FXDC and not 2020 like the title says. Anywho, the breather bolts are actually 3/8 x 1.525. Spark plugs are 12MM x 1.25
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