350 valve cover breather online, Push In Air Breather Cap Valve Cover Breathers Replacement Round Push In Breather for SBC BBC SBF 327 350 302 454 502 Silver online. GoToContentActionLink.

Q–I have a 1986 Chevrolet Silverado with the 305-CID and 4-barrel carb. It has 86,000 original miles, and I’ve always changed the oil at 3,000. The problem is that it is spitting oil into the ...

Fresh air would be drawn through the breather tank and down through each valve cover then out the valley of the engine, via the vacuum signal on the intake side of the PCV valve. See All 20 Photos 1.

In addition, the low-level vacuum draws in fresh air to the crankcase from the crankcase breather. In 99% of normal driving conditions, this is how a properly functioning PCV system works.

Mobile Diesel Service uses a pair of Case IH/New Holland dual valve covers (PN 2830784) with matching breathers (PN 504069558) from the 3.9L Cummins 4BT engine to replace four of the six stock ...