Re:name this object?
 

i say its either a cheap fuel pressure regualtor (depending on the barb sizes) or an egr vavle.... but it does look like it has somethin to do with coolant... but what used vac lines in a coolant system???

Re:name this object?
 

It could be emission related.

Re:name this object?
 

its the blow off valve

Re:name this object?
 

testicle poker

Re:name this object?
 

what makes a bypass valve useless? it still releases unwanted pressure when the throttle closes right?

Re:name this object?
 

just rip the top cover and see what`s inside and how it works :D

Re:name this object?
 

Where's Jeff on this one, he works at a Nissan dealership. He should know. Jeff....

Re:name this object?
 

It appears that on the top there might be a part # if there is one on it....what is it. That might help us to determine what it is

Re:name this object?
 

yeah, just look up the nissan part # ;)

Re:name this object?
 

this is what the sticker on top reads -
__________
| ABY74-I |
-------------
| 9201D |
___________