Use the Search by SKU >> Menu above to view available California Approved Direct Fit ( bolt on) Catalytic Converters for your Car or Truck
The Following are instructions for selecting the aftermarket catalytic converters that have been approved for use in California and in
states adopting California standards:
USING our VEHICLE SEARCH BAR at the top of this page,
Select the appropriate
4. ENGINE SIZE
5. Locate the EFN or TEST GROUP (Required for OBDII vehicles only). Click here for help locating your EFN
match the application fitment table Test Group number with the Test Group number on your specific vehicle.
The State of California has issued EXECUTIVE ORDER NUMBERS for all California applications listed, each pertains to a specific vehicle, to ensure State Compliance, please be sure to match the 5 items above. Should you have any questions, please contact the compliance Hotline Monday-Friday 7-3 Pacific Time at 1-800-288-7730 or contact us anytime.
*When purchasing or installing a California approved catalytic converter the TEST GROUP/EFN NUMBER on your vehicles emissions sticker and PART NUMBER must correspond to the application listed.