Enforcement

Enforcement Discretion for California-approved Aftermarket Catalytic Converters for Vehicles with On-board Diagnostic Systems

EPA will allow the sale and installation in federal areas of aftermarket catalytic converters that have been approved by California under their AMCC/OBD-II procedures. Issued Sept. 30, 2004.

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Enforcement Discretion for California-approved Aftermarket Catalytic Converters for Vehicles with On-board Diagnostic Systems (PDF)(2 pp, 866 K)