Approval Details

Valid E.O.


This Executive Order approved the specified parts on on December 18, 2001.
As of Monday, May 27th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModelsModificationRemarks
11220832061998-2001, C260, C280, C320, CLK320, SLK320, 1998-2000, E320, 1998-1999, ML320The Kleemann Comfort Power Compressor Kit consists of an Autorotor supercharger with a pulley diameter of 87mm for the 6 cylinder engine and 75mm for the 8 cylinder engine. The factory fuel system is modified with an additional fuel pressure regulator that raises fuel rail pressure in proportion to the positive manifold pressure. The factory intake manifold is replaced with a new manifold housing that contains the supercharger and intercooler assembly. The EGR tube inside the manifold is modified to ensure even distribution of gases into each cylinder. The factory electric air injection pump is relocated to the inside fender area. Maximum boost pressure is 7 psi. The C class models receive a voltage step up device for the fuel pump when in the boost mode. A 500 ohm resistor, designed to prevent a lean condition during high RPMs, is installed inline with the output signal of the mass air flow meter.Vehicles which have been certified to a Ultra-Low-Emission Vehicle (ULEV) and/or the Supplemental Federal Test Procedure (SFTP) standards are excluded from this Executive Order.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-528
  • Executive Order 528 / D528
  • ARB # D-528
  • Executive Order No: D-528
  • C.A.R.B. No. D-528
  • Resolution D-528
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-528 PDF

D-528 Document:

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