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I'm looking for one, if anyone knows where they might exist. It's the 411 one with the longer tailpipe. I've got a nice nickel-plated tailpipe already; now I just need the muffler to go with it.

i have the same model on my 412-73 ,, look all the parts padge on samba ,, i have see that some time ,, or look in the porsche parts ,,example ,,,auto attlenta ,,or pélican porsche parts ,,, but wend we said ,,porsche we payd for porsche ,,,the double,, but the normal price is 125-150$

At least some Porsche stuff will not fit as the flanges are upside down. A standard 72-75 Bus muffler will work fine, but finding the kind that takes the long tail pipe would be hard if that is what you want. Check the classifieds and eBay, they do show up from time to time.

Be sure what you are getting. There were a few brands and variants. I have used them all. Only one or two stand out.

Most of what is available out there is Dansk brand. Made in Denmark. The welding is terrible around teh ports. Not weak...just sloppy. Slightly restrictive.

The best of the bunch if you can find one is made by Ernst. These flow about 10-15% better than any of them. They are much thicker and heavier as well.

Old stock wagner...decent.

Leistritz very good...construction as good as Ernst...but basically stock.

The muffler where the pipe comes out of the center is called a "damper" style. It is more quiet...but more restrictive than the right or left exit model.

Compared to what we should have on the car...they are all restrictive and can cause elevated temepartures. Ray

hy, ray,, i have now on my 412-73 this leinstritz,, muffler,, you said they can geeve more heat on the motor,,albert

Not any particular brand of stock muffler....but the overall style...of all of these brands was not great for the type 4.

Jake Raby had noted that partly due to restriction and partly due to the size and amount of radiating surfaces...that tehse mufflers cause a large portion of the original stock hot running chracteristics.

The Ernst brand mufflers are noticably larger, heavier, better constructed and better flowing. I do not know if they are any longer available. The leistritz is the next best.

The style of this muffler ....a very queit compact mufler in a very small difficult place ...was a good ides...just very difficult to accomplish.

I think about this all the time. I think....with what we know now...it could be redesigned. If it got even 25% better...That would be great. Ray

thanks ,,RAY

By the way... www.bughaus.com has Ernst or Leistritz type 4 mufflers in stock at $199 each. Ray

Where at the bughaus website are these mufflers? I went to the type 4 section and the mufflers they list there are said to be "unavailable", meaning you can't even back order them.

Hmmm.. ...tap that link above.....when the site opens...tap the small type in the center block of type on the right that says type 3 and 4......go to the small column of car pictures on the left....tap the oval balloon for the type 4 car.....the next page that comes up has pictures of parts categories....tap the picture of the muffler right center page.....two part #'s and descriptions come up.
Now...I have not tried to buy one. They may not have them.

Yup.....you are right....not available. It just reenforces that when my car is back on the road....I will probably have made my own exhaust. I am either building a stainless variant of a Bursch...or will make a much improved version of the stock muffler.

That being said...I habe an Ernst end exit model that I have sliced open...and a Dansk damper style I have sliced open from last year or so. These mufflers really are a compact marvel....but it is interesting the way they are layed out. There could be just a couple of changes made inside that ease the transition of the gasses from one side of the engine.

This style of muffler will never be a "header"...one that extracts gasses and "makes" HP....but if we can modify the design enough to just have say....half the back pressure and be balanced....I think it could do much better.
If I can keep it from banking heat in the engine....that would be enough.
Ray

yes, RAY ,,i konw bughouse from,3-4 years ,,they are very good ,, but for the muffler make attention ,, they sale the best quality but on her web page they show the model for with ,,right or lefgth side exhoust pipe ,, and you can buy with or without ,,egr,,valve ,, on the 412 73- we d,t have the ,,egr,,valve only on 74,,with the model with the damper pipe midle exit that take the model 021-251-161E ,,with damper 053 C,,, more easy to find the model with the right or lefgth exit,, the midle exit is very quiet but hard to find,, they can look in ,,autoattlenta,, they sale that some time,,

if you can buy on ebay ,,one new muffler is for sale in,,,,bonn,,,germany,,,midle exit ,, now is 3.50 euro and 4 bitter open for 8 days,,can ship w usa,, but attention the transport is very expensive,, albertoh,,on german ebay