Stainless Steel 1.75" (45mm) 4 into 1 Manifold/Downpipe Collector. Exhaust Manifold Collector. IDEAL FOR BUILING YOUR OWN EXHAUST SYSTEM /MANIFOLD. WITH FOUR 1 3/4" INLETS PERFECTLY SHAPED FOR THREE TUBES TO SLIDE IN IN LEAVING BEHIND A SMALL CAVITY WHICH IS IDEAL FOR WELDING THE TUBES INTO PLACE.
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