Automotive Parts and Accessories: CSI C1718 Chrome Valve Cover Breather Filter - 1.25" - Competition Specialities
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Automotive Parts and Accessories: Billet Specialties 21220 Bowtie PCV Breather for 1.25" Valve Cover Hole - Billet Specialties
Automotive Parts and Accessories: Billet Specialties 20220 Bowtie Breather for 1.25" Valve Cover Hole - Billet Specialties
Automotive Parts and Accessories: Rubber Breather/PCV Grommet for Valve Cover - 1.25" Holes 1" ID - CFR Performance
Automotive Parts and Accessories: Billet Specialties 21950 Oval Ribbed Billet PCV Breather for 1.25" Valve Cover Hole - Billet Specialties
Automotive Parts and Accessories: Billet Specialties 20950 Oval Ribbed Billet Breather for 1.25" Valve Cover Hole - Billet Specialties
Automotive Parts and Accessories: Billet Specialties 20929 Polished Plain Breather fro 1.25" Valve Cover Hole - Billet Specialties
Automotive Parts and Accessories: 4870 X 2 bowtie Valve Cover Breather package - Racing Power Company
Automotive Parts and Accessories: 1958-86 Chevy Small Block 283-305-327-350-400 OEM Style Short Valve Covers - Orange - CFR Performance
Automotive Parts and Accessories: Edelbrock 4649 Signature Series Chrome Valve Cover - Edelbrock
Automotive Parts and Accessories: CSI C1707 Rubber PCV Breather - Competition Specialities
Automotive Parts and Accessories: S&B Push-In Crankcase Vent Filter w/ Chrome Top, 3"OD x 1.25"ID Valve Hole - 2.5"H w/o Shield - S&B Filters
Automotive Parts and Accessories: 1958-86 Chevy Small Block 283-400 Tall Smooth Steel Valve Covers - Black - CFR Performance
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Automotive Parts and Accessories: 1958-86 Chevy Small Block 283-305-327-350-400 OEM Style Short Valve Covers - Chrome - CFR Performance
Automotive Parts and Accessories: Edelbrock 4145 Elite Series Classic Finned Aluminum Valve Cover - Edelbrock
Automotive Parts and Accessories: 1958-86 Chevy Small Block 283-305-327-350-400 OEM Style Short Valve Covers - Black - CFR Performance
Automotive Parts and Accessories: Rubber Oil Baffle Grommet for Valve Cover - 1.25" Holes 1" ID - CFR Performance
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Valve Cover Breather 1.25 Popular Q&A
Q: What Is the Purpose of Valve Cover Breathers?
A: Valve cover breathers prevent pressure from developing in the crankcase. They also promote air circulation in the crankcase, preventing oil temperatures from ri... Read More »
Q: How Do Valve Cover Breathers Work?
A: Valve cover breathers are located on top of the valve covers, in the oil-filling hole. They come in different sizes and shapes. To understand the operation of v... Read More »
Q: Where to install a valve cover breather?
A: if it doesn't have one do not fit one. although it is not pressurised it can cause you engine to stall unexpectedly. if you must fit one your breather must have... Read More »
Q: Where does the breather hose coming out of the valve cover leads ...
A: I believe you're referring to the the PCV (Positive Crankcase Ventilation) hose. After it passes thru the PCV valve itself it goes down below the engine and hoo... Read More »
Q: What benfit is gained by ventilating crankcase from valve cover t...
A: the crankcase fumes are noxious and contain hydrocarbons and carbon monoxide its better to put them back in the engine then coming back into car through vents. ... Read More »