Any suggestions on where to find parts to install a pipe and cone shaped style k&n type filter which will hold up? I've looked and can't find any specifics on where to find any of the parts used on some the other posts. thanks

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2004 Infiniti G35 3.5L 6mt Coupe 73K miles 25.6mpg ytd
2001 Green Audi TT 225 AWD Roadster 71K 6sp 30.9mpg >>STOLEN<<
1982 300D Turbo 231K 120hp? 28.1mpg YTD

My local Pep Boys always had tons of that stuff.

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'81 300TD Wagon 355k (Miss Diesel)
'83 300SD 180k
'84 500SEL 190k (Parting it out)

I have a K&N filter element (Federal 84 300D) that replaces and fits into the stock air filter housing.
I way back I started a thread to see if I could use something else to wash the filter element with and it started a lot of controversy; take a look.
http://www.peachparts.com/shopforum/showthread.php?t=212563&highlight=K%26N+air+filter
Some people do not like the cone shaped ones as they are exposed to the hot air under the hood.
I saw this thread and decided to include it.
http://www.peachparts.com/shopforum/showthread.php?t=222022&highlight=K%26N+air+filter

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84 300D, 82 Volvo 244Gl Diesel

I use one of these for that reason. They're crappy and overpriced though. I've been looking for something bigger (more surface area) and more robust that'll fit where I need it to go, but for now this works.

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'81 300TD Wagon 355k (Miss Diesel)
'83 300SD 180k
'84 500SEL 190k (Parting it out)

I never posted this information as I wanted to try it again.
I have a digital Thermometer with a probe long enough the I put it under the hood at the end of my air filter horn (Federal air filter housing) which would be about where one of those Cone type filters would be under the hood and I ran the car on the Freeway to get it hot and drove around town and sat at some long Traffic Signals. I also put the probe all the way up front where the cold air would go into the air filter and drove around again.
I was surprised to find out that while you are moving even in slow traffic the outside and under the hood temperature is not significantly different. However, when you idle the under the hood temperature went up from the 76 degree outside temp to 98-110 degrees under the hood.
My conclusion is that you do no harm by having the end of the air intake system under the hood as it only made a differance when you sat at idle. When you start moving there is enough air flow that you get the colder outside air anyway.
If you want to try the experiment youself (cheaper than a new intake system) I bought the thermometer at Target and it has a 36 inch long steel braided covered wire. You are supposed to stick the probe in what you are cooking in the oven to measure the inside temp of it and run the cable out of the oven door and the Digital display has magnets on the back to stick to you oven/car hood. I believe it cost around $16.
Get someone with good eyes to ride along with you to do the reading of the thermostat.

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84 300D, 82 Volvo 244Gl Diesel

I don't think I could bring myself to use a filter I can see light through on my car...

-Jason

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.

K&N is just an air strainer, it depends on the oil to catch dirt as it passes by (through) the filter. The gauze really does nothing to filter the air, it only holds the oil.

Read though this site and you will see why "performance" filters are junk. http://home.stny.rr.com/jbplock/ISO5011/SPICER.htm

I suggest you check out MTUpower's profile. he has replaced the stock MB filter housing with a GM 3.8L Air box. He is running an intercooler as well, but the GM airbox apparently fits without major modification. The only question is what to do with the crankcase breather tube oil separator.

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'83 300D Turrrbo 295K miles

Don't do it, especially if you have a turbo.

Edit: I guess you do - sig "1982 300D Turbo"

Some where in the thread the K&N battle has already been fought. No sense going over it again.
http://www.peachparts.com/shopforu...26N+air+filter

Also I believe it is Fram has a filter cleanable filter element that dose not need oil; but I do not think they make them for older Mercedes yet.

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84 300D, 82 Volvo 244Gl Diesel

Anybody know which GM 3.8 liter air box? They put the 3.8 liter in a pretty wide range of vehicles and I'd be willing to bet some of them have a lot better airbox design than others.

I couldn't find any info in MTUPower's profile...

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1984 300 Coupe TurboDiesel
Silver blue paint over navy blue interior
2nd owner & 2nd engine in an otherwise
99% original unmolested car
~210k miles on the clock

1986 Ford F250 4x4 Supercab
Charcoal & blue two tone paint over burgundy interior
Banks turbo, DRW, ZF-5 & SMF conversion
152k on the clock - actual mileage unknown

There is only one that fits. Square box with in and out on different ends. You will need a K&N filter in it But atleast its cold air. I pick mine up from the area next to the headlight ala W126

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http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42

From a Buick Park Avenue.

Thanks for the heads up. I'll definitely look into that.

rcounts, here's the thread: http://www.peachparts.com/shopforum/showthread.php?t=208787

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'81 300TD Wagon 355k (Miss Diesel)
'83 300SD 180k
'84 500SEL 190k (Parting it out)

Why would you need a K&N element? Does the OEM filter for the GM 3.8L not flow enough air for the 617?

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'83 300D Turrrbo 295K miles