PCV & Breather Components
- Genuine®Engine Oil Separator SealEngine Oil Separator Seal by Genuine®. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and manufactured from premium materials using...Made with precision and quality in mindDesigned to meet your specific needs$5.97 - $106.22
- Genuine®Oil Separator GasketOil Separator Gasket by Genuine®. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and manufactured from premium materials using state-of-the-art...Made with precision and quality in mindDesigned to meet your specific needs$8.98 - $99.04
- Genuine®Oil Separator HoseOil Separator Hose by Genuine®. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and manufactured from premium materials using state-of-the-art...Made with precision and quality in mindDesigned to meet your specific needs$14.48 - $246.98
- Genuine®PCV Breather Cap BoltPCV Breather Cap Bolt by Genuine®. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and manufactured from premium materials using state-of-the-art...Made with precision and quality in mindDesigned to meet your specific needs$4.89 - $31.11
- Genuine®PCV Hose NipplePCV Hose Nipple by Genuine®. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and manufactured from premium materials using state-of-the-art...Made with precision and quality in mindDesigned to meet your specific needs$8.02 - $20.04
- Genuine®PCV O-RingPCV O-Ring by Genuine®. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and manufactured from premium materials using state-of-the-art...Made with precision and quality in mindDesigned to meet your specific needs$9.26 - $13.80
- Genuine®PCV Valve Hose ClampPCV Valve Hose Clamp by Genuine®. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and manufactured from premium materials using state-of-the-art...Made with precision and quality in mindDesigned to meet your specific needs$6.05 - $10.43
- Genuine®PCV Valve Hose ConnectorPCV Valve Hose Connector by Genuine®. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and manufactured from premium materials using...Made with precision and quality in mindDesigned to meet your specific needs$18.89 - $53.43
- Genuine®PCV Valve Hose GrommetPCV Valve Hose Grommet by Genuine®. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and manufactured from premium materials using state-of-the-art...Made with precision and quality in mindDesigned to meet your specific needs$7.41 - $8.34
- Genuine®PCV Valve Oil TrapPCV Valve Oil Trap by Genuine®. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and manufactured from premium materials using state-of-the-art...Made with precision and quality in mindDesigned to meet your specific needs$6.05 - $254.43
- Genuine®PCV Valve TubingPCV Valve Tubing by Genuine®. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and manufactured from premium materials using state-of-the-art...Made with precision and quality in mindDesigned to meet your specific needs$64.05 - $71.06
- Mopar®Crankcase Breather Cover GasketCrankcase Breather Cover Gasket by Mopar®. Want your prized possession to look and perform the way it was designed to? Then top-of-the-line Mopar automotive parts and accessories are for you. Made using the latest manufacturing...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$3.12 - $28.94
- Mopar®Engine Crankcase Breather HoseEngine Crankcase Breather Hose by Mopar®. Want your prized possession to look and perform the way it was designed to? Then top-of-the-line Mopar automotive parts and accessories are for you. Made using the latest manufacturing...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$23.01 - $92.41
- Mopar®Engine Crankcase Vent Valve SealEngine Crankcase Vent Valve Seal by Mopar®. Want your prized possession to look and perform the way it was designed to? Then top-of-the-line Mopar automotive parts and accessories are for you. Made using the latest manufacturing...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$10.91 - $78.46
- Mopar®Engine Oil Separator BoltEngine Oil Separator Bolt by Mopar®. Want your prized possession to look and perform the way it was designed to? Then top-of-the-line Mopar automotive parts and accessories are for you. Made using the latest manufacturing technology to...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$0.31 - $30.31
- Mopar®Engine Oil Separator CoverEngine Oil Separator Cover by Mopar®. Want your prized possession to look and perform the way it was designed to? Then top-of-the-line Mopar automotive parts and accessories are for you. Made using the latest manufacturing technology to...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$121.43 - $202.42
- Mopar®Engine Oil Separator GasketEngine Oil Separator Gasket by Mopar®. Want your prized possession to look and perform the way it was designed to? Then top-of-the-line Mopar automotive parts and accessories are for you. Made using the latest manufacturing technology...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$15.30
- Mopar®Engine Oil Separator Hose ClampEngine Oil Separator Hose Clamp by Mopar®. Want your prized possession to look and perform the way it was designed to? Then top-of-the-line Mopar automotive parts and accessories are for you. Made using the latest manufacturing...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$2.64 - $4.36
- Mopar®PCV Valve GrommetPCV Valve Grommet by Mopar®. Keep your vehicle safe for the environment with this high-quality product from Mopar. Made from premium materials with tight tolerances to your original part, this product will help you restore the...Built to restore your emission control systemDesigned to fit your vehicle specifications$5.03 - $57.54
- Mopar®PCV Valve Hose AdapterPCV Valve Hose Adapter by Mopar®. Want your prized possession to look and perform the way it was designed to? Then top-of-the-line Mopar automotive parts and accessories are for you. Made using the latest manufacturing technology to...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$2.82 - $40.11
- Mopar®PCV Valve Hose ClampPCV Valve Hose Clamp by Mopar®. Want your prized possession to look and perform the way it was designed to? Then top-of-the-line Mopar automotive parts and accessories are for you. Made using the latest manufacturing technology to meet...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$4.72 - $5.79
- Mopar®PCV Valve O-RingPCV Valve O-Ring by Mopar®. Keep your vehicle safe for the environment with this high-quality product from Mopar. Made from premium materials with tight tolerances to your original part, this product will help you restore the efficiency...Built to restore your emission control systemDesigned to fit your vehicle specifications$0.84 - $23.97
- Motorcraft®Breather TubeBreather Tube by Motorcraft®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...Made with precision and quality in mindDesigned to meet your specific needs$20.47 - $172.50
- Motorcraft®Engine Crankcase Breather HoseEngine Crankcase Breather Hose by Motorcraft®. Is your CHECK ENGINE light on? Has your vehicle failed a state emissions test? Your vehicle's emissions control system is in need of repair, but before you waste your time and gas running...Direct OEM replacementMeets strict Ford Motor Company standards$10.70 - $203.69
- Gates®Engine Crankcase Breather Hose KitEngine Crankcase Breather Hose Kit by Gates®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in mind. It will meet your needs...High quality at an affordable priceExpertly made from premium materials$88.62 - $238.14
- DIY Solutions®PCV Valve ElbowPCV Valve Elbow by DIY Solutions®. If you're seeking to get your steel stallion back to its tip-top condition, then this top-notch replacement solution is what you should definitely look out for. When it comes to quality, reliability...Designed to help restore your vehicle to its former gloryQuick replacement to let you enjoy an awesome ride again$19.66$21.37Save 8%
- WVE®Engine Crankcase Breather HoseEngine Crankcase Breather Hose by WVE®. WVE emissions products are made to meet or exceed vehicle manufacturer specifications to work in concert with the fuel system, underhood electronics and the engine to minimize emissions of...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$18.98 - $24.59
- WVE®PCV Valve GrommetPCV Valve Grommet by WVE®. WVE emissions products are made to meet or exceed vehicle manufacturer specifications to work in concert with the fuel system, underhood electronics and the engine to minimize emissions of environmental...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$2.13 - $18.42
- Original Equipment®Breather ConnectorBreather Connector by Original Equipment®. Looking for high-quality replacement parts to restore the performance of your vehicle? Then Original Equipment automotive parts are for you. They are manufactured from the finest materials...Perfect replacement for your damaged or worn out original partMade using high-grade materials for long-lasting dependability$12.01 - $34.99
- Original Equipment®Breather O-RingBreather O-Ring by Original Equipment®. Is your CHECK ENGINE light on? Has your vehicle failed a state emissions test? Your vehicle's emissions control system is in need of repair, but before you waste your time and gas running out to...Perfect replacement for your damaged or worn out original partMade using high-grade materials for long-lasting dependability$4.20 - $4.94
The PCV (Positive Crankcase Ventilation) system channels harmful crankcase vapors to the air intake in a controlled manner so they can be burned along with the air/fuel mixture. These gases must be allowed to escape from the crankcase or pressure could build up causing gaskets and seals to fail resulting in leaks, and to prevent oil contamination which could reduce the oil’s effectiveness and usable lifespan.
All engines, no matter how new or well-maintained, have a certain amount of “blow-by”, where some of the gases from the combustion chambers leak past the piston rings and cylinder walls. This causes pressure to build up inside the crankcase, which if not provided a path for exit, would instead escape past seals and gaskets, causing engine oil leaks. These gases also mix with moisture in the crankcase to form compounds that are destructive to the engine lubricating oil, causing sludge to form. In the past these gases were allowed to escape from the engine block through a “road draft tube”, but since they contain hydrocarbons (HC), when it was realized in the 1950s that HC was a major cause of smog, a new method for ventilation was needed.
PCV was the earliest emission control system, first appearing on cars in 1961. In this system air enters the crankcase through a crankcase breather tube. The air is filtered either by the engine air filter or by a dedicated crankcase breather filter element. The incoming fresh air mixes with the crankcase vapors and is drawn out from the crankcase into the intake manifold, where it mixes with the incoming air/fuel mixture and is burned in the combustion chambers. The PCV valve is used to regulate the flow of vapors. It contains a restrictor and a light spring.
At idle, not much blow-by is produced but intake manifold vacuum is high. The high level of vacuum causes the restrictor to be drawn against the spring, limiting the flow of vapors. At low engine loads such as would be experienced at cruising speed, less manifold vacuum positions the restrictor to allow a moderate flow of vapors. During high engine load conditions like acceleration, there is a higher amount of blow-by but also minimal engine vacuum. Under these conditions the PCV valve allows the maximum flow of vapors to the intake manifold.