Formed 4 to 1 merge collector with 3-bolt collector flanges for use with 4 primaries 1.625″ (1-5/8″) tubes which merge down to outlet size of 3″ OD.
These collectors are swedge formed from mild steel and require final fitment and welded to the primary header tubes to complete a set of custom headers.
2 – Formed 4 to 1 Merge Collector, Primary tubes = 1.625″ (1-5/8″), Outlet = 3″ OD
4 – 3/8″ thick, steel, 3-bolt collector flange
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