Alpina B2 Airbox to Intake Hose Qustion.

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Nicholas Grosso

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Hi Guys,

Looking for a hose from Alpina airbox to air intake. Anyone have suggestions on what route to go? I know of the original 80mm paper air duct tubing but I don't love the look of it. If anyone has something they found that looks somewhat OEM i'd go that route. I know I can find some generic corrugated hosing options but wanted to reach out for better suggestions first. Mechanic has it pegged at 3.25 inch diameter and need a little over 7in long.

Thanks.

Resized_20240619_145817_1718823512168.jpeg
 
Nicholas Grosso said:
Hi Guys,

Looking for a hose from Alpina airbox to air intake. Anyone have suggestions on what route to go? I know of the original 80mm paper air duct tubing but I don't love the look of it. If anyone has something they found that looks somewhat OEM i'd go that route. I know I can find some generic corrugated hosing options but wanted to reach out for better suggestions first. Mechanic has it pegged at 3.25 inch diameter and need a little over 7in long.

Thanks.

View attachment 184805
Click to expand...

You may be confusing two different parts. The part that is forward of the air cleaner ("1") is paper. The part that is aft of the air cleaner ("5") is rubber. It may be that the rubber bellows is too short for your needs but I am not near one to measure. Perhaps the images below may be of some assistance.

19335_1.jpg


Pt. No. 13721255108
iu
 
tochi said:
You may be confusing two different parts. The part that is forward of the air cleaner ("1") is paper. The part that is aft of the air cleaner ("5") is rubber. It may be that the rubber bellows is too short for your needs but I am not near one to measure. Perhaps the images below may be of some assistance.

19335_1.jpg


Pt. No. 13721255108
iu
Click to expand...
On Alpina's they used a paper hose for part 5 opposed to the rubber bellow. I found a solution though. Thank you for the response.
 
Original is something like this:
9E310AB3-5EC0-4CB3-8656-41EC7C23B104.jpeg

abdbc8e244.jpeg

IMG_8972-1024x576.jpeg

tochi said:
You may be confusing two different parts. The part that is forward of the air cleaner ("1") is paper. The part that is aft of the air cleaner ("5") is rubber. It may be that the rubber bellows is too short for your needs but I am not near one to measure. Perhaps the images below may be of some assistance.

19335_1.jpg


Pt. No. 13721255108
iu
Click to expand...

This is pretty tidy solution with new parts:
bmw-30-csl-07-d911407a.jpeg


Another variations...
IMG_5951.jpeg

car 1.jpeg

bonus haha
1971-bmw-alpina-05.jpg
 
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