This high-flow catalytic converter features 400 CPI ceramic brick construction designed for enhanced exhaust flow in performance engines up to 5.9L/6,000LBS applications. Constructed with T304 stainless steel for corrosion resistance and durability. Precision-engineered O2 sensor port maintains proper air-fuel ratio monitoring. Direct-fit replacement compatible with rotary engine vehicles requiring 2.5" inlet/outlet connections. California compliance notice: Not legal for vehicles registered in CA due to emission standards. Front/rear universal installation with silver-finish housing for OEM-style appearance. Manufacturer part number 425250 ensures precise dimensional accuracy for proper exhaust alignment. Includes single converter unit only - gaskets/hardware sold separately.