18mm - 12mm O2 Bung Adapter

Made from high-quality stainless steel, this bung adapter screws into an 18mm bung for use with some 12mm narrow-band O2 sensors.  Outside thread is M18x1.5 and the inside thread is M12x1.25.

• Go from 18mm to 12mm bung size
• Outside Thread: M18 x 1.5
• Inside Thread: M12 x 1.25

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Quiet Core
$34.95 $19.95

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