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On 29 Feb 2004 at 20:34, BOB2TYPE3S@aol.com wrote: > Terry wrote: > > I have a question. The passenger side heater box has a small plate that > >looks like it's blocking some kind of passage underneath. It points straight > >up. Is this a part of some emissions control device? My other boxes don't > >have this piece. > > This is normal for some of the earlier heater boxes. The plate is use to > cover the single port intake preheat tube attachment. This is usually the right > heat exchanger that has this located at the front (flywheel end). I hope this > helps. That port was also re-introduced in 72-3 for the EGR valve that some areas got. After that, replacement RHS heat exchangers came with the port so that they could be a universal replacement. -- ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org