Approval Details

Valid E.O.


This Executive Order approved the specified parts on on June 11, 1998.
As of Tuesday, May 21st, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

1992-95 Honda Civic/EX/SI/DX equipped with the 1.5/1.6L engine, 1996-98 Civic EX equipped with the 1.6L engine, 1990-97 Accord equipped with the 2.2L engine, 1992-95 Prelude SI-VTEC equipped with the 2.2L engine, and 1994-98 Acura Integra GSR equipped with the 1.8L engine. Any vehicle that is certified to a TLEV, LEV, or ULEV emission standard are excluded from this Executive Order.Long tube header manufactured out of 16 gage stainless steel, header is a 4-2-1 configuration with the oxygen sensor located in the collector. A new wire lead is provided on Honda vehicles that need extensions for the new oxygen sensor placement

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-397-4
  • Executive Order 397-4 / D397-4
  • ARB # D-397-4
  • Executive Order No: D-397-4
  • C.A.R.B. No. D-397-4
  • Resolution D-397-4
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-397-4 PDF

D-397-4 Document:

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