Any idea of part number or size of the intercooler o-ring, from turbo to intercooler not the hockey stick ? 

Changed all parts but still down on boost pressure, have found oil / residue on the seal going into the intercooler

Mk2 octavia vrs petrol

On 05/09/2019 at 00:08, Mudplugger said:

Any idea of part number or size of the intercooler o-ring, from turbo to intercooler not the hockey stick ? 

Changed all parts but still down on boost pressure, have found oil / residue on the seal going into the intercooler

Mk2 octavia vrs petrol

 

Unsure about the part number, however a bit of oil isn't uncommon in the intercooler system. If you take off any of your charge pipes you'll get a bit dripping out. 

Hi marfrohon, ive not even taken the pipe off mate incase the o rings gone, all joints are dry except this one, theres oil and crug on the outside of the joint 

On 06/09/2019 at 20:05, Mudplugger said:

Hi marfrohon, ive not even taken the pipe off mate incase the o rings gone, all joints are dry except this one, theres oil and crug on the outside of the joint 

Ah fair enough! Oil eats away those pipes after a while sadly. Honestly the best way would be to do the old sleazy trick, and call the dealer - get the part number, and browse the aftermarket for cheaper options. 😛

Went to the skoda dealer on sat, told him the exact part and he came out with a pic of the inlet manifold, then asked me which o-ring !!! Said i'll pop back later as he had no clue 😂😂 will pop the joint tomorrow and measure it myself 😂 

https://skoda.7zap.com/en/cz/

 

It's not what I call an o-ring.  The profile is different.

 

Skoda call the IC a charge air cooler.  partno of the o-ring should be  3C0145117H but double check 7zap as you haven't given a year or engine code.