Weld in stainless steel stepped O2 sensor bung. 18x1.5mm thread.
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Weld in stainless steel stepped O2 sensor bung. 18x1.5mm thread. Required when installing a wideband (or narrowband) O2 sensor into your exhaust system. Free postage to anywhere in Australia. Has a step to fit into hole drilled in exhaust pipe. Makes welding a little easier.