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O2 sensor bung kit

Weld-in version
O2 sensor bung kit
Available in both no-weld and welded versions

O2 sensor bung kit - weld-in: 2 in stock

Only 2 left

Product Name Qty


Need to move an O2 sensor or add a new one? You need an O2 bung!

Available in two styles. The no-weld version is attached to a strap that goes around the exhaust. It fits 2.25" and 2.5" piping. The weld version has to be welded into place and can be used on any size pipe. A hole will have to be drilled in the pipe in both cases.

Note that stock exhaust systems - including the ND parts - are usually smaller than 2.25" OD, so the no-weld version will not work in this case.

Some aftermarket exhausts, including most of ours, include extra O2 bungs already, so check to make sure you need one before you order.

Additional Information

Additional Information

Part number 06-99900
TÜV approval available No
Fits: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999, 2000, 2001, 2002, 2003, 2004 (non-MSM), 2005 (non-MSM), MSM, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 MX-5 soft top, 2017 MX-5 soft top, 2017 MX-5 RF, 2017 Fiat 124 Spider, 2018 MX-5 soft top, 2018 MX-5 RF, 2018 Fiat 124 Spider
Manufacturer Flyin' Miata
Flyin' Miata exclusive No
Fits Exocet? Yes
Proposition 65 Warning: Cancer and reproductive harm
California emissions Emissions regulations do not apply
Instructions for this part are not currently available online.

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