Approval Details

Valid E.O.


This Executive Order approved the specified parts on on April 17, 2003.
As of Friday, March 1st, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

2003 and older vehiclesThe Plasma Direct is a direct replacement ignition coil. The Plasma Booster is an add-on spark enhancement device that is installed by attaching one wire to the negative coil terminal and the other to a ground source. The Plasma Direct and Plasma Booster are sold separately as an individual device.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-557
  • Executive Order 557 / D557
  • ARB # D-557
  • Executive Order No: D-557
  • C.A.R.B. No. D-557
  • Resolution D-557
For Free CARB Executive Order Status verification, email an image of the device Executive Order label as well as the Year/Make/Model and Test Group # of the vehicle to [email protected]

Download: Executive Order D-557 PDF

D-557 Document:

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