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Join Date: Jan 2003
Location: British Columbia, Canada
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Question What is this?

Hello, all.

I've attached a photo of a part from my engine that I don't understand its purpose. It is a plastic tube that attaches to the rear of the engine sheet metal. The plastic tube is connected to a hose which connects to a fitting on the bottom of the air box. So, what is its purpose? It almost seems to be a drain line.

71 911T/2.7
Old 09-20-2004, 09:27 AM
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My wrench said it was for catching oil, but honestly he if he said it was for catching stray muffler bushings and it still wouldn't have made much less sense. The bottom rubber peice was cracked on mine so I left it out.
1973 911T
2005 VW GTI
"Dave, hit the brakes, but don't look like your htting the brakes...what? I DON'T KNOW, BRAKE CASUAL!!!" dtw's thoughts after nearly rear ending a SHP officer
Old 09-20-2004, 09:33 AM
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I would rather be driving
jpnovak's Avatar
Join Date: Apr 2000
Location: Austin, TX
Posts: 7,140
It is the oil catch. It is usually attached to the lower most port on the T on the bottom of the air cleaner. Its to catch oil that comes over from the breather tube next to it.
Jamie - I can explain it to you. But I can not understand it for you.
71 911T SWT - Sun and Fun Mobile
72 911T project car. "Minne" - A tangy version of tangerine - EFI conversion parts
Old 09-20-2004, 10:26 AM
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Join Date: May 2000
Location: Los Alamos, NM, USA
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It is the drain line from the bottom of the air box or air cleaner. It allows whatever ends up in the bottom of these housings (usually oil from overfilling the oil tank) to be drained to the ground instead of being dumped onto the top of the engine. The rubber duck bill like bottom piece on the vertical plastic tube acts like a one way valve. Replacement parts are still available. Jim
Old 09-20-2004, 10:56 AM
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