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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
4.6 Based on 75 Reviews
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MA
10/03/2021
Mike A.
United States
Works great

Works great, screws right in.

WB
09/20/2021
Whiteboi B.
United States United States
Broke

This part already came apart

ZZPerformance Valve Cover Breather ReviewZZPerformance Valve Cover Breather Review
RH
09/09/2021
Randy H.
United States United States
Valve cover breather

Good so far only put a few miles on car

JM
09/08/2021
Jaime M.
United States United States
Great product!

Looks pretty good under the hood!

CF
08/08/2021
Cody F.
United States United States
Breather review

So all in all, yes it helped with the dipstick popping out but I don’t like that it doesn’t fully seal in the oil cap spot real well (it wobbles around) and I don’t like that it sprays oil out of it when the engine is under load