Ummm, im not sure but it might be part if teh crankcase breather. Im not sure about on you 280, but it may be. If there is a hose running off of the outside of it to the air intake, then its the crankcase breather.
I changed my gaskets today & noticed on the driverside cover there were two hollow tubes that protrude into the head. Does anyone know WTF these things are for? Obviously for sometype of ventalation, but how & why this way?. I noticed mine were plugged up. I easily unplugged them by sticking on a hose & lowing through it.
Any idea why MB designed them the way they did?
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1989 240sx
Driftbitch
Ummm, im not sure but it might be part if teh crankcase breather. Im not sure about on you 280, but it may be. If there is a hose running off of the outside of it to the air intake, then its the crankcase breather.
2000 C230K
custom intake
Full audio with MTX, Alpine, And Rf parts
custom a-pillar pod
Can you post a broader picture...maybe of the whole valve cover?? Thanks!