When replacing the AOS do you need to replace the Crankcase Breather Hose also?

[BoxsterInTheSun]

I'm going to tackle replacing the AOS on my 2002 base 986.

Some tutorials mention replacing the Crankcase Breather Hose ( part # 99610714506 ) as part of the job. Does anyone know if this is required or not? It's not clear to me why the original one can't be reused, saving $90 on the job cost.

Thanks for any tips!

[78F350]

It's not required. I think the reason that it's recommended is that they sometimes crack and it's more convenient to replace while the AOS is out.

[BoxsterInTheSun]

Originally Posted by 78F350

It's not required. I think the reason that it's recommended is that they sometimes crack and it's more convenient to replace while the AOS is out.

Ah ha, thanks. So I need to add "be very careful not to crack this during the job" to my list of things to worry about.

[BoxsterInTheSun]

Upon further investigation it seems like Porsche modified the AOS which means the original Crankcase Breather Hose ( part # 99610714506 ) ends up being too short to reuse, hence the need to get the new one, which is a bit longer. Ugh.

[Gilles]

You want to get a new one..! as the original will be all brittle and will crack just by looking at it..

PS: You don't need to remove the intake plenum, if you remove the cover behind the seat, with a bit of patience, you can plug it into the connector.

[BoxsterInTheSun]

Originally Posted by Gilles

You want to get a new one..! as the original will be all brittle and will crack just by looking at it..

PS: You don't need to remove the intake plenum, if you remove the cover behind the seat, with a bit of patience, you can plug it into the connector.

Great to know, thank you! Is it the part number I referenced above? I'm finding conflicting info...I have a 2002 986 base model.

Thanks again!

[Gilles]

Originally Posted by BoxsterInTheSun

Great to know, thank you! Is it the part number I referenced above? I'm finding conflicting info...I have a 2002 986 base model.

Thanks again!

I am sorry but don't have the parts manual for the 986 platform, but I know that Sunset Parts lets you shop by P/N and description but some of our members have access to the PET manual for the 986.

PS: The reason I suggested replacing the hose was because when I replaced the AOS on my '07 987CS, it was completely brittle and cracked while trying to disconnect it, and knowing that your car was a bit older than an '07 the hose should be replaced at the same time, good luck!

[pilot4fn]

Originally Posted by Gilles

I am sorry but don't have the parts manual for the 986 platform, but I know that Sunset Parts lets you shop by P/N and description but some of our members have access to the PET manual for the 986.

PS: The reason I suggested replacing the hose was because when I replaced the AOS on my '07 987CS, it was completely brittle and cracked while trying to disconnect it, and knowing that your car was a bit older than an '07 the hose should be replaced at the same time, good luck!

The parts catalog is available from Porsche Classic: htt ps://ww w.porsche.com/international/accessoriesandservice/classic/originalpartscatalogue/

(delete couple of spaces at the beginning)

[BoxsterInTheSun]

Many thanks everyone! I ordered the part 99610714506 so at least I have it on hand if the other one breaks and/or is too short when I replace the AOS next weekend.