koly

Just purchased a used 2010 GLK and am cleaning up some minor issues...

Poking around under the hood, I found one of the two air intake flex hoses (the one on the driver's side) is ripped just passed where it connects to the plastic opening/inlet that attaches to the grill... how/where can I find the part #/order a replacement?

TIA for any help

koly

a couple photos to illustrate the problem (first attempt, so apologies if I include them the wrong way):

mjhawkins2346

Same thing happened to me. I was going to look for something more durable. I'm thinking some of that flexible aluminum tubing that looks like dryer vent tubing - only 3" (or whatever the size is) might be the ticket.

RSNovi

A piece of silicone hose would work nice. I used them when I was racing with superchargers. Something like this.

http://www.turbohoses.com/Turbo%20Hose.htm

mjhawkins2346

Those hoses look nice. Are they flexible enough to make the turns? Which size is correct?

koly

Found the part number via the MB epc. MSRP $64.00, but can be found at other suppliers for ~$47.


left duct, when sitting in the vehicle looking forward:
Part #: A 272 090 29 82

right duct
Part #: A 272 090 28 82

mjhawkins2346

The material for the factory hose does not look impressive. Too delicate and seems like it can absorb fluids it catches as well as dust / dirt. The duct on the front seems removable so you can clamp on a replacement.

koly

When I get the replacement, I'll make a measurement. Those silicon hoses look nice but like you asked, I wonder if they can make the bends without kinking...

mjhawkins2346

Well, I wrapped the old duct with some aluminum tape to buy some time to figure out what I want for a replacement. I hated the thought of paying $47 for a cloth wrapped spring. Let us know how your experiences turn out.

koly

Arrived yesterday. For $47 you get a cloth-wrapped spring and the two plastic end-cap ducts that attach the hose to the front grill and to the air filter box.

Eyeballed it against a ruler, and the hose O.D. is ~3.5 inches. If one were to replace the hose, I guess hose clamps could be employed to attach the hose to the filter box, but I'm not sure how you could attach it to the front flatter grill mount, as that seems to be more of a 'channel' mount that the duct needs to fit within.

koly

Update - finally got around to installing the hose, since the original tear wasn't too bad and I figured I'd replace it when I did a bunch of other chores (air filter, oil change, etc).

The cloth hose was extremely fragile and tore in two more places just from slight pressure from my hands trying to pop the assembly off of the engine-side of the hose.

Next replacement I think I will just purchase some flexible metal dryer hose and some hose clamps - that cloth hose is either super cheap, or mine had gotten something on it that degraded the cloth excessively.

Related: where the cloth mounts to oblong/oval-shaped air inlet - the cloth fits into a "c" channel, where I believe it is also attached with adhesive (actually, adhesive looks like it was used on either end), because the cloth did not separate from the plastic ends even with moderate force.

MercyforWife

Aluminum dryer hose works well (3 inch I believe). $7.99 for enough to do both hoses. No clamps/adhesive needed.

Zumwalt

if anyone did do the dryer hose, can you post a pic?

MercyforWife

Zumwalt

not to bad, thank you. what size it that?

MercyforWife

3 inch diameter as I recall. No clamps or adhesive necessary.

Also I replaced crankcase vent valve that was spitting oil onto exhaust system causing burning oil smell. Got URO part off eBay.

HDRyder9

Dryer vents are typically 4". 3" vent hose is available for marine use. It comes in black, too.

MBKLUE

What the hell do the Marines do with that 3-inch stuff??

HDRyder9

marine, not Marine.

SeaMonkeyGLK350

I was thinking about these hoses just last weekend. I had to replace the drivers side one a few weeks back because I tore it about in the same place as the OPs hose was torn. What made me think about it last weekend is that we were driving on the highway in heavy rain. I was thinking about how the air intakes feed right at the front grill, and I was wondering if maybe the ducts are made from this cloth material in order to absorb any water that gets in before it gets to the air filters. Does that make sense, or would that be a non-issue? What made me think of that is the same thing you guys are talking about... I couldn't imagine why these ducts are so flimsy.

Thanks!

MBKLUE

Mee thinks the water absorption is a non-issue. Probably made thin/flimsy for flexibility when installing and removing, less vibration/noise etc. One end is connected to the chassis and the other end is basically connected to the engine so engine movement in relationship to the chassis has to be taken into account. Movement on the engine end and heat from the engine compartment probably does it no good over time.

SeaMonkeyGLK350

That makes sense. Thanks! I may opt for those homemade aluminum hoses if I have another break.

bop11

Make sure you keep an eye on those hoses. They are made for low pressure, out of a dryer and not reduced pressure as in an intake. With about 600 cfm (300 per hose) flowing into the engine at speed, the corrugations may provide a lot of resistance to flow. Also the hoses are made for pressure not vacuum so they may collapse under the intake suction after awhile. Marine use is for very low flow/ pressure bilge ventilation and again not designed for use under suction. They may provide very good service, but I would keep an eye on them.

SeaMonkeyGLK350

Oh boy... good point. Maybe the silicone hoses would be better... provided they can bend appropriately.

monarc98

FYI I just wanted to share the same problem I I have with my 011 glk 300 and I found a small solution by using the same plastic air duct I use for my 2004 c240. Any feedback would be appreciated if ok or not . All I did was inserted both and used the same original scoop. Thanks