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The Stainless Works 3-1/2" to 2-1/2" collector adapter with O2 bung is a TIG-welded 304 stainless component featuring a 3-bolt flange and a welded oxygen-sensor bung. It creates a stepped transition from larger collectors to 2-1/2" tubing while providing a dedicated O2 port located near the flange. Made in the USA and backed by a limited lifetime warranty, it suits custom exhaust adaptations.
Stainless Works Collector Adapter 3-Bolt 3-1/2in OD Tubing 2-1/2in OD Outlet + O2 Bung
