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The ISR weld-on O2 bung is a fabrication accessory that provides a threaded port for installing an oxygen sensor into custom or repaired exhaust tubing. Intended for welding into exhaust pipes or headers, the weld-on bung creates a serviceable mount for O2 sensors during sensor relocation, manifold repairs, or custom exhaust builds where a factory sensor provision is not present.
ISR Performance Weld-On O2 Bung
