Hey, this is a very common failure point. You can replace it with another stock rubber hose. The problem is; the oil and heat, destroys them and you will end up doing it again. There were some differences; between some engine codes, so order yours based on your vin #. There should be a part #; actually imprinted on the part itself.
Breather Hose
Volkswagen New Beetle 1.8T
3-way breather hose that sits on top of the valve cover
For vehicles with a AWU or AWV engine code only
06A103221BN
There are some really cheap ones on ebay but I don't think; they would last long.
Another option; is the aftermarket silicone hoses and they will essentially last forever: (early and late AWP versions)
I would contact 034 Motorsports; before ordering, to confirm it would fit your car.
http://store.034motorsport.com/breather-hose-valve-cover-mk4-1-8t-early-awp-y-hose-silicone.html
http://store.034motorsport.com/breather-hose-valve-cover-mk4-1-8t.html
Another company; makes one as well, this is what I have and it has lasted forever. At the time; they sold, just the one hose by itself and it was about $50. So, you might try the 034 solution first and just get the one hose.
MK4 GTI/GLI 1.8 PCV Hose Kit | Eurojet Racing
Breather Hose
Volkswagen New Beetle 1.8T
3-way breather hose that sits on top of the valve cover
For vehicles with a AWU or AWV engine code only
06A103221BN
There are some really cheap ones on ebay but I don't think; they would last long.
Another option; is the aftermarket silicone hoses and they will essentially last forever: (early and late AWP versions)
I would contact 034 Motorsports; before ordering, to confirm it would fit your car.
http://store.034motorsport.com/breather-hose-valve-cover-mk4-1-8t-early-awp-y-hose-silicone.html
http://store.034motorsport.com/breather-hose-valve-cover-mk4-1-8t.html
Another company; makes one as well, this is what I have and it has lasted forever. At the time; they sold, just the one hose by itself and it was about $50. So, you might try the 034 solution first and just get the one hose.
MK4 GTI/GLI 1.8 PCV Hose Kit | Eurojet Racing