2.0T FSI Air Filter – Mann Filter OE Equivalent

Mann Filter - Part Number C41 110

I’ve done a few maintenance items the last few days. The fuel filter was one and now the air filter. Mann Filters has an OEM equivalent filter for the 2.0T FSI motor with the part number C41 110. I purchased it from Amazon. Mann most likely makes the original filter but the aftermarket Mann filter has a very slightly different look from the OEM filter. The foam is slightly lighter in color and softer but thicker in overall dimension. The filter material looks the same. It fits perfectly fine in the airbox. Anyway, it was around 15 dollars from Amazon, about 5 dollars cheaper than my local dealership.

Mann Air Filter - C41 110 - Edge Detail

Mann Filter - C41 110


Fuel Filter – Latest Revision – 1K0201051K

6.6 Bar Fuel Filter - Part Number 1K0 201 051 K

There is a new revision for the fuel filter with a 6.6 bar pressure regulator versus the older 6.4 bar regulator. Since I was due for one, I purchased one from TheVWPartsStore.com for about 35 shipped. The filter looks no different from the older version except for the 6.6 bar marking. The part number is 1K0 201 051 K.

6.6 Bar Marking - 1K0 201 051 K

The factory interval is around 40,000 miles I believe. The one I changed out had about 20,000 miles on it. When I first changed out my fuel filter, I noticed that a lot of the gas that spilled out was a muddy brown color. This time there was none of that.

Here’s a link to the fuel filter DIY. Excellent instructions. As always, when working with fuel, be careful. Work in an area with good airflow and no sources of ignition.

Cabin Air Filter

Cabin Air Filter CUK-2939

With spring and summer right around the corner, it might be a good time to check on your cabin air filter.  It is located right underneath the glovebox and is completely worth doing yourself.  No need to pay the dealership a ridiculous amount of money.

Depending on your area and how often you use your A/C, these filters can get dirty real fast.  It’s usually time to check when you notice a bad smell starting to come from the vents.

Here’s an excellent DIY with pictures from the VWVortex.

Amazon has excellent pricing for a Mann cabin air filter.  The part number is CUK 2939.

AEM Dryflow Filter

If you are interested in replacing the filter on your aftermarket intake system, give AEM’s Dryflow filter design a try.  The filtration media is designed to work dry and requires no oiling.  It’s easier to clean than the K&N oiled filters and is supposed to filter better. Since it uses no oil, it avoids the risk of over oiling the filter and contaminating the MAF.  This is admittedly a rare occurrence if you take care in re-oiling a K&N.   The oiled filter design flows better but I’d sacrifice some flow for filtering any day.  The filter muffles intake noise a bit more than the standard oiled filter so keep that in mind.

This particular filter was fitted to the BSH Trueseal intake.  Take note that the BSH filter is a very narrow design.  The AEM fit there is not much clearance.  It ends up contacting the liner on the hood, not too badly, but it is something to keep track of.  The correct size is a 2.75″ inlet and 5″ length.  I think the part number is 21-202DK.

It is interesting to note that AEM’s Dryflow filters now also have the K&N logos on the box.  The filter division was bought out a little while ago, but nothing seems to have changed, save for the color (now red instead of gray) and the addition of a metal mesh(originally plastic reinforced).  AEM has another line (Bruteforce Dryflow) that maintains the design of the original Dryflow with gray filter media and internal plastic reinforcement.

BSH True Seal Intake

Original article circa summer ’09 – I’ve split the article into its two components: the intake and the diverter valve kit.

This kit is for the 2.0 T FSI engine.

I received this intake kit awhile ago.  The design is top notch and well made.  It includes single piece piping, a heat shield, a proprietary filter, a Forge diverter valve and all necessary clamps and hoses.  Installation is relatively simple if you have the proper tools.  One highly recommended tool is a hose clamp remover.  I think the newer kits are being shipped with them.

After a few months with this kit, I feel that this is the best intake for the GTI out there right now.  It solves the issue of failed diverter valves and relocates the valve itself to the front of the car.  No dyno runs on the intake yet but midrange and the top end feel better.  The torque curve seems to have shifted slightly to the right, but nothing crazy.  This intake is not very loud, if you are looking for noise, look elsewhere.  Otherwise, it’s a nicely designed piece and a great company to deal with.

If you are chipped, you don’t have to worry about any more torn diverter valves.

Review Redux: updated (1/27/2011)

The BSH Trueseal intake for the FSI engine is just one of many intake systems available for the GTI.  There isn’t much deviation as far as filters on a stick go but this one offers a few unique features of its own.  It offers a built in relocation bung as well as a heat shield which isolates the filter from the engine bay.


Sorry for the horrible picture, a much nicer one will be up soon, I promise

The intake itself is very simple with 2.75 inch piping in powder coat black.  The heat shield is relatively thick sheetmetal, also powder coated black.  The edges of the heat shield are covered with a rubber seal that presses up against the hood liner, thus creating a box around the filter.  The silicone and associated clamps are all high quality pieces.  The filter is a proprietary specification that is narrower than most other filters in order to fit into the heat box.  Despite that, a similarly sized filter from another vendor will most likely fit.  It is oiled but I have not had any problems with the oil contaminating the maf sensor.  It has since been changed out for an AEM Dryflow filter which filters better and requires no oil.

I can’t really comment of how much power this intake makes as I have not put my car on the dyno with it.  You’ll probably gain a few horses, nothing to write home about.  Those gains will increase as you pile the mods on though, especially with chipping.  Just don’t believe the +15 hp ads that you see regarding intakes.  It does wake up the engine a little on the high end and provides a very nice sound.  It’s not loud by any means, so if noise is what you want, look elsewhere.  BSH’s intake provides a very mature sound, no doubt due to the heat shield surrounding the filter.

Here’s something important, and since it’s important, it’s going to get its own break.  MAF sensor placement is very sensitive on these cars.  Some intakes will drive the sensor nuts and in turn your car, causing all sorts of chaos.  Fuel trims are adversely affected by incorrect maf calibration.  STFT and LTFT (short term and long term fuel trim) will be incorrect if the maf placement on the intake is off.  There was an early run of BSH intakes that had incorrect maf holders.  The fuel trims are not too bad on these early intakes but in reality you want it to be as close to zero as possible.  If you buy used, be sure to know which version you are getting.  The older maf holder sticks out about an inch or more from the intake.  The newer ones are much closer to the piping.  Reference the following picture of the older MAF holder:

The newer one is much smaller than that.

Older BSH MAF Holder

Finish is not BSH’s strong suit.  The intake is well made and will hold up but doesn’t look the part.  I know it’s nitpicking but it’s all part of the show.  The welds on the intake are very visible and lend a homebrew look to the whole thing.  The relocate bung is sealed with an ugly vinyl cap if you’re not using it.  The rubber seal on the heat box looks like it came straight from your local hardware store.  The intake also doesn’t secure too well in the box.  I eventually added additional rubber to secure it.  There is certainly none of the flash you get from other manufacturers such as AWE, Eurojet, Forge and APR.  If you’re looking for flashy, this isn’t the intake you’re looking for.  For those that are looking for functional bits, this is it.  It has a great heat shield, a built in relocation port and all the growl a normal adult needs.  Despite the visual flaws, the BSH intake still gets a recommendation from me.  It is priced far below the other premium intake options such as the Forge Twintake, and AWE carbon intake and works just as well.

~ 270 from BSHspeedshop.com and other dealers

Here’s a link to an AEM Dryflow filter that fits in the BSH heat shield.  The fit is a little tight though.  AEM Dryflow

Vendor List

Need Parts?

I thought it’d be useful to have a list of all the vendors I’ve used so far.  These are all places I’ve used before and trust.  Just look up at the top heading and everything will be under Vendor List.  Or just click the word “Vendor List“.  That’s probably easier. Go find the part you need!

Updated! – Fuel Filter Installed, More Maintenance

I know this was supposed to be updated last week but since I’ve been sloshed this past holiday weekend, this post is just on time.  Can you say unhealthy?

My new fuel filter just went in over the weekend. Took maybe 15.365 minutes tops, give or take a couple of hundredths of a second.  Didn’t seem too dirty after all.  I’ve read reports of the fuel coming out of the thing being brown but the stuff that came out of mine only had a slight tinge.  I think for my purposes, changing at the suggested 40,000 miles might be a excessive.  I doubled the service interval and noticed no change with the new one.  Good news I suppose.

Those with dirtier gas, although I have absolutely no clue how you would tell, would probably do well to change it at 40,000 miles.

On second thought, changing at 40,000 mile intervals is not too much to ask for.  The filter is only 25 bucks.

I also did my oil change over the weekend.  I’m pretty sad to say that Lubro Moly 5w40 is hard to find in stores again.  They do have stock of the 0w40 Lubro so I just used that.  We’ll see how good the oil is compared to their 5w40.

I bought my filters at DBCPerformance.com.  Good company to deal with.  Or you can also go to germanfilters.com.  Similar pricing and free shipping on orders above 55 dollars.