It looks like some underhood air duct. It starts behind the grille in the bumper and ends at the passenger side engine mount (green arrows). It makes no sense why this part is on my car.

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95 E320 Cabriolet, 159K

That is the air intake. Don't go fording any rivers or moderately deep puddles o you'll suck in water and do some damage.

I can't help you but I was trying to figure out the same thing on my 1995 sedan. It doesn't seem to do anything

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68 280SL - 70 280SL - 70 300SEL 3.5 - 72 350SL - 72 280SEL 4.5 - 72 220 - 72 220D - 73 450SL - 84 230GE - 87 200TD - 90 190E 2.0 - 03 G500

Nissan GTR - Nissan Skyline GTS25T - Toyota GTFour - Rover Mini - Toyota Land Cruiser HJ60 - Cadillac Eldorado - BMW E30 - BMW 135i

It's not connected to the intake. It's open at both ends. I'm either missing some parts or this part is useless and can be removed.

It appears to direct air to the engine mount.

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Fred Hoelzle

It maybe something that works in conjunction when the underbelly pans are in place.

Seems like it would ram cold air to the mount location which disperses it and hence also cools the pre cats area.. and finally exhaust out from the opening in the pan - Otherwise the only air coming in would be the through the radiator..

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)

This is a cooling duct for the motor mounts, the V8 cars have it to.

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600SEL '91
300E 4Matic '88
240D '83
280SE '77
350SE '73
The most complex systems can fail in the simplest way.
Contra verbosus noli contendere verbis, sermo datur cunctis, animi sapientia paucis.

i don't believe in the lord! He's never bought me a Mercedes Benz.

WOW - cooling for motor mounts, the diesels shake more but lack them - do the gas cars have the thermostat louvres in the wheel wells to exhaust hot air?

sometimes you wonder what sort of team was working.

Here ve haf kuhl aer for ze motur mount - as hydraulics make heat - ve need to kuhl it viz cold air.

Imagine a guy at the chevy design team saying this and then promptly getting fired

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)

OEM motor mounts are fluid filled.