Trunk Drains

[Mitch_M]

Price: $30

Location: SoCal

Description:

Trunk drains for sale. Priced for the pair. In good condition. No cracks. Buyer pays shipping. 

 

[Flamingo 5]

Are they still flexible!

[Mitch_M]

Are they still flexible!

Just checked. The bellows flex easily.


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[Mitch_M]

Bump

[Conserv]

I don’t know what to call these!

 

These ducts extract interior air from just above the rear window and exhaust it under the left and right sides of the trunk lid. They are critical pieces of the (dated and often inadequate) flow-through ventilation found on all ‘02’s without sunroofs.

 

I don’t know what the factory calls them — heck, I can’t even find them in the parts manual — but the use of “drain” might imply that they conduct water, which they don’t — unless something is FUBAR....?

 

You know I cannot refrain from commenting on such matters: I don’t want future generations believing these are, for instance, sunroof drains....

 

Regards and GLWS,

 

Steve

 

 

 

Edited March 1, 2019 by Conserv

[halboyles]

Looks like BMW calls them "Breather Hose".  Anyway here is where they show up in the Parts Manual.

[Conserv]

32 minutes ago, halboyles said:

Looks like BMW calls them "Breather Hose".  Anyway here is where they show up in the Parts Manual.

 

Thank you, Hal!

 

I always assume the English part description is a bad interpretation of a German part description that is “spot on”!  But “Breather Hose” is, at minimum, far more succinct than “Flow-Through-Ventilation Exhaust Duct”...?

 

Best regards,

 

Steve

 

[Flamingo 5]

1 hour ago, Conserv said:

I don’t know what to call these!

 

These ducts extract interior air from just above the rear window and exhaust it under the left and right sides of the trunk lid. They are critical pieces of the (dated and often inadequate) flow-through ventilation found on all ‘02’s without sunroofs.

 

I don’t know what the factory calls them — heck, I can’t even find them in the parts manual — but the use of “drain” might imply that they conduct water, which they don’t — unless something is FUBAR....?

 

You know I cannot refrain from commenting on such matters: I don’t want future generations believing these are, for instance, sunroof drains....

 

Regards and GLWS,

 

Steve

 

 

 

With all do respect, my 1968 Bmw 

1600 Sunroof car also had these.

i expected they were to allow air to flow through the open edge of the open sunroof and prevent ballooning.

in fact they were one of BMW’s early innovations to give better ventilation. Then along came a

Behr...

[Mitch_M]

1 hour ago, Conserv said:

I don’t know what to call these!

 

These ducts extract interior air from just above the rear window and exhaust it under the left and right sides of the trunk lid. They are critical pieces of the (dated and often inadequate) flow-through ventilation found on all ‘02’s without sunroofs.

 

I don’t know what the factory calls them — heck, I can’t even find them in the parts manual — but the use of “drain” might imply that they conduct water, which they don’t — unless something is FUBAR....?

 

You know I cannot refrain from commenting on such matters: I don’t want future generations believing these are, for instance, sunroof drains....

 

Regards and GLWS,

 

Steve

 

 

 

 

HA! Baited you right in, Steve.

 

Let's call them trunk air drains! LOL. Thanks for clarifying!

 

Like you said, it's better than “Flow-Through-Ventilation Exhaust Duct."

 

Hal - thanks for the factory diagram.

[m-tuner]

they create a vacuum  by using the low pressure area under the trunk lid, and you thought germans were not ahead of the curve    Bruce

[artbo]

22 hours ago, West Palm 2002 said:

With all do respect, my 1968 Bmw 

1600 Sunroof car also had these.

i expected they were to allow air to flow through the open edge of the open sunroof and prevent ballooning.

in fact they were one of BMW’s early innovations to give better ventilation. Then along came a

Behr...

 

 

I believe the early sunroof cars were fitted with these until they started using the oval blank plugs. My 5/71 sunroof car has the tubes. I pulled one out believing that was incorrect and found it was plugged. Made sense, since there is no airflow to them in a sunroof car. I have a set of new blank plugs if anyone needs a pair.

[Conserv]

16 minutes ago, Artboakrill said:

 

 

I believe the early sunroof cars were fitted with these until they started using the oval blank plugs. My 5/71 sunroof car has the tubes. I pulled one out believing that was incorrect and found it was plugged. Made sense, since there is no airflow to them in a sunroof car. I have a set of new blank plugs if anyone needs a pair.

 

+1

 

Sunroof ‘02’s that have the breather hoses should have the hoses plugged — the factory generally just used a wad of foam rubber stuffed in the hose — in order to avoid a blowout of the headliner.

 

Best regards,

 

Steve

 

[Mitch_M]

Bump