The Stainless Works 3-bolt collector adapter is crafted from 304 stainless steel and TIG welded for strength. It adapts a 3" flange to a 2-1/2" OD outlet while providing long-term corrosion resistance. An O2 bung is welded into the tubing approximately 2" from the flange edge for sensor mounting. The adapter includes a limited lifetime warranty and is made in the USA.
Stainless Works Collector Adapter 3-Bolt 3in OD Tubing 2-1/2in OD Outlet + O2 Bung