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The O2 Weld-In Bungs from HMF work specifically for our high-end exhaust systems These bungs are made from Stainless Steel and fit standard bosch O2 sensors.
12mm - O2 Cap
18mm - 12mm O2 Bung Adapter
18mm - O2 Cap
18mm - O2 Bung
12mm - O2 Bung
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