Non-Original Equipment Catalytic Converters

1. Non-Original Equipment Catalytic Converters All Non-original catalytic converters must be CARB approved/exempt and are labeled with information necessary to ensure that installations comply with California law.

2. Catalytic Converter Labeling Catalytic converters installed before January 1, 2009 New aftermarket catalytic converters and certified used catalytic converters can be identified by a permanent stamp or label on the shell of the converter. The label/stamp should be in the following U.S. E.P.A. format: T/CA/MC XXXX YYYY. The labels do not include the EO number

3. T/CA/MC XXXX YYYY • T: Either “N” (for new aftermarket converters), or “U” (for certified used converters). ARB staff has found that this character is sometimes omitted on new aftermarket converters • CA: Indicates that the converter has been ARB approved • MC: A two character code for the converter manufacturer • XXXX: The converter’s part or series number. The number may be longer than 4 digits • YYYY: The date of manufacture. The first two digits indicate the month, and the last two the year

4. Pre- 1/1/09 Labeling TA = Manufacturer See Website Database CA = ARB Approved in California The Converter Part/Serial Number Manufacture Date Month/Year 09 05 N = New Aftermarket

5. This Table Lists Valid Manufacturer Codes For California

6. Catalytic Converter Labeling • Catalytic converters installed on or after January 1, 2009 • Meet more stringent requirements • Labels include the EO number in large font, presented in the following format: D-XXX-XX YYYYYY ZZZZ

7. Decoding Catalyst Labels • D-XXX-XX = This is the ARB approval number for the converter (known as the “EO number”). Every EO number will begin with “D”. The first three X’s will be a 3 digit number corresponding to the manufacturer. The last two digits will be the specific approval number for the manufacturer. The EO number can be used to obtain information about the approval status of the converter on ARB’s website in the same manner that other aftermarket add-on and performance parts can be looked up. The website address is: http://www.arb.ca.gov • YYYYYY = The part number for the converter (assigned by the manufacturer) • ZZZZ = The date of manufacture. The first two digits indicate the month, and the last two the year.

8. Legal Converters With Laser Printing And Plate ID CONVERTER WITH LASER PRINTING SEE EO# D 280-73 CONVERTER WITH PLATE ID SEE EO# D 280-77

9. Labeling Example Manufacturer Assigned part # 36104 ARB EO# D-193-86 Manufactured March 2009 03/09

10. Resource Examples This screenshot shows where to enter the replacement part EO number into the ARB search engine. Enter the EO# here: D-193-86 Left Click Here

11. EO # D-193-86 Entered Into ARB Search Engine