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

5. COD E MANUFACTURERCOD E MANUFACTURER ADAdvanced Car Specialties (RiteCat).ESESW America, Inc. AEThe Automotive Edge (Hermoff)ETEmico Technologies, Inc. ATAirTek, Inc. (Catco)LPLaPointe Exhaust System Equipment BNBrown Recycling & Manufacturing, Inc. MCMiller Catalyzer Corp BOBosal Mexico SA DECVMMMaremont CECar Sound Exhaust System, Inc. (Magnaflow) PAPerfection Auto Prod. Corp CTValina, Inc. (CarTex).PPProducts For Power CVCateran Pty Ltd.TAWalker Manufacturing EMEastern Manufacturing Inc.TDTRI-D Industries Inc. EQEquipo Industrial Automotriz S.A. de C.V. TPTested Products (DEC)

6.  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 EO# YYYYYY Part# ZZZZ Date manufactured

7.  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. Decoding Catalyst Labels

8. CONVERTER WITH LASER PRINTING SEE EO# D 280-73 CONVERTER WITH PLATE ID SEE EO# D 280-77

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

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