Valve Cover Breather

Engine - Valve Cover Breather
Engine - Valve Cover Breather

Valve Cover Breather

82 reviews
Regular price $29.99
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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.

Customer Reviews
4.6 Based on 82 Reviews
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Jimmy F.
United States


I have alot of zzp parts and I like zzp. Broke inside two weeks. Glue could not handle heat. I popped hood on slingshot and it wasn't together. Not a good buy.

Merlin L.
Canada Canada

Love it

It looks really great in the engine bay. I think its a must have!

Cody W.
Canada Canada

Zzp oil cap breather

Came all black so I painted the raised letters white. Very. Happy with how it looks.

Kenneth R.
United States United States

Breather oil cap

Honestly I was gonna put it in but decided not to as I think my lsj needs tuning to trick the computer to use this but I was trying to bandaid something my pcv valve was stuck closed instead of fixing it I’m biting the bullet now and doing the labor to fix the real problem sold to buddy with ls3 engine but overall piece looked nice and as of quality it’s a shame I didn’t want to take the risk

tanner c.
United States United States

Great product but with a flaw on LSJ’s

Product works great but I had a problem with the seal. It’s not quite thick enough so once it is fully tight the filter wobbles around. I know this product is for multiple cars but on the LSJ valve cover it doesn’t fit quite right I think with a thicker seal it would fit perfectly and it would keep it from wobbling

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