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Valve Cover Breather

Engine - Valve Cover Breather
Engine - Valve Cover Breather

This valve cover breather that simply replaces your factory twist on oil cap on your valve cover. It is beneficial for cars that do not have a PCV system that can keep up with thier engine. This will fix the dreaded dipstick popping up issue. It does this by venting excess crankcase pressure when it builds up. We have been told that people have been seen power gains and lower oil temps after installing it. This update version of our valve cover breather only stands at 2.75" tall so it fits better in tighter spots.

This is a simple one piece design, other venders breathers make adapters to mate to an aftermarket breather. This one is made based off of the factory oil cap and includes a sealing O ring.

PCM programming required, since it is venting your crankcase and allowing your PCV valve to bypass the MAF. 

Note: After installation do not remove valve cover breather by grabbing and twisting the top, we have seen failures because of this. The breather is designed to fit very snug, like an oil cap; the proper method for removal is grabbing the base, or bottom, of the breather and turning from there. If you twist the top you may bend or break the mesh material. 

Fits: Cobalt, Ion Redline, G5, Pursuit, Regal, Grand Prix, Bonneville, Park Ave, Impala, Monte Carlo, LS v8 (Corvette, Camaro, Firebird, GTO, G8), and many other GM vehicles with a single alignment pin valve cover.

DOES NOT fit Cruze/Sonic, or ATS/CTS/2.0 Camaro (LTG engine) due to a dual locator style valve cover. 
DOES NOT fit Sky and Solstice because the engine sits too far under the firewall.

Engine - Valve Cover Breather
Engine - Valve Cover Breather
Customer Reviews
4.7 Based on 70 Reviews
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Jean-francois R.
Canada Canada
Looks good but not working

Looks good but the glue aint working after only one week + or - 150 km the breather came off from the bottom…

Andrew G.
United States United States
Must have

Great part stopped my dip stick from popping up. Looks good o. There too

United States United States
Keeps falling off

I bought one for my ion redline and after 3 weeks it became loose and flew off on the freeway. That time I wasn't sure if it was me for not installing it rite. My brother recently bought one for his Ion redline. This time I made sure it was on tight and that it wouldnt fly off. Well after a week same thing happened. If you have a ion redline I wouldnt recommend it.

Travis B.
United States United States
It breathes

Yep it does as described

Yomar P.
United States United States
ZZP Valve Cover Breather

It fit right onto my Lsj perfectly! Functional and has a nice look to it aswell.