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The MagnaFlow Standard Grade direct-fit catalytic converter 23558 replaces aging emissions hardware for 1981–1984 BMW 633CSi and 1983–1984 BMW 533i models, helping keep the check engine light off while matching OE fit and flow. Constructed with mandrel-bent tubing and corrosion-resistant stainless steel, 23558 includes flange and donut gaskets plus a Torca clamp for an easier install and is Federal/EPA compliant for pre-OBDII vehicles.
MagnaFlow Conv BMW 69.75X6.5X4 1.75/1.75
