PCV & Breather Components
- Motorcraft®PCV ValvePCV Valve 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 great...Direct OEM replacementMeets strict Ford Motor Company standards$4.13 - $211.25
- Standard®PCV ValvePCV Valve by Standard®. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation for integrity to all channels of...Made with precision and quality in mindDesigned to meet your specific needs$1.11 - $405.18
- Beck Arnley®PCV ValvePCV Valve by Beck Arnley®. For one hundred years, Beck Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and transitioning to import vehicles in the 1950's, brand understand parts...Designed to ensure reliable operation of your emission control systemDirect OE (original equipment) replacement$1.91 - $276.12
- ACDelco®GM Original Equipment™ PCV ValveGM Original Equipment™ PCV Valve by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$4.52 - $76.91
- Original Equipment®PCV ValvePCV Valve by Original Equipment®. If you have a dirty air filter, clogged PCV valve, or defective MAF sensor you may be tempted to just run down to the local auto parts chain store for a replacement, but before you waste your time and...Perfect replacement for your damaged or worn out original partMade using high-grade materials for long-lasting dependability$7.53 - $147.22
- Gates®Breather CapBreather Cap 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 and deliver great...High quality at an affordable priceExpertly made from premium materials$4.50 - $11.50
- Genuine®PCV ValvePCV Valve 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 manufacturing...Made with precision and quality in mindDesigned to meet your specific needs$10.75 - $249.97
- Mopar®PCV ValvePCV Valve 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 of the...Built to restore your emission control systemDesigned to fit your vehicle specifications$2.75 - $534.99
- Genuine®Crankcase Vent ValveCrankcase Vent Valve 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 - $505.55
- ACDelco®Gold™ PCV ValveGold™ PCV Valve by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$2.76 - $64.23
- Standard®Intermotor™ PCV ValveIntermotor™ PCV Valve by Standard®. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation for integrity to all channels...Made with precision and quality in mindDesigned to meet your specific needs$2.18 - $192.18
- ACDelco®Genuine GM Parts™ PCV ValveGenuine GM Parts™ PCV Valve by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$7.12 - $42.86
- Dorman®HELP™ PCV ValveHELP™ PCV Valve by Dorman®. Keep your vehicle’s emission control system in top-notch condition with superior Dorman replacement emission control parts. Manufactured from top-grade materials using advanced technologies, these parts...Application specific - components designed to replace original components on certain vehiclesDurable materials - made to resist fluctuating under-hood temperatures to ensure longevity$10.44 - $85.54
- WVE®PCV ValvePCV Valve 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 pollutants.Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$2.43 - $566.30
- ACDelco®PCV ValvePCV Valve by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or exceed...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$17.83 - $35.87
- Mopar®Crankcase BreatherCrankcase Breather 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...Built to restore your emission control systemDesigned to fit your vehicle specifications$160.76 - $199.92
- DIY Solutions®PCV ValvePCV Valve 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 and...Designed to help restore your vehicle to its former gloryQuick replacement to let you enjoy an awesome ride again$24.75 - $62.93$27.49 - $66.25Save up to 10%
- Original Equipment®Crankcase Vent ValveCrankcase Vent Valve by Original Equipment®. If you have a dirty air filter, clogged PCV valve, or defective MAF sensor you may be tempted to just run down to the local auto parts chain store for a replacement, but before you waste your...Perfect replacement for your damaged or worn out original partMade using high-grade materials for long-lasting dependability$10.27 - $227.54
- SKP®PCV ValvePCV Valve by SKP®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading materials using...High quality at an affordable priceExpertly made from premium materials$5.11 - $116.39
- URO Parts®Engine Crankcase Breather CapEngine Crankcase Breather Cap by URO Parts®. Make your vehicle operating quiet again by replacing your malfunctioning component with this top-notch emission control part. The dependable URO part will make your exhaust system work as it...Designed to replace your worn out exhaust partHelps to restore quiet vehicle operation$38.68
- Luber-finer®Breather FilterBreather Filter by Luber-finer®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at...High quality at an affordable priceExpertly made from premium materials$2.08 - $13.35
- Sankei®PCV ValvePCV Valve by Sankei®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at an...Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating$7.58 - $14.43
- ACDelco®Engine Crankcase Vacuum ManifoldEngine Crankcase Vacuum Manifold by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$7.88 - $8.69
- ACDelco®GM Original Equipment PCV Valve OrificeGM Original Equipment PCV Valve Orifice by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$11.67
- Dorman®OE Solutions™ Crankcase Ventilation FilterOE Solutions™ Crankcase Ventilation Filter by Dorman®. This replacement crankcase ventilation filter matches the fit and function of a cracked, clogged or missing original equipment filter. Made of quality materials, this filter is...Ideal replacement - this crankcase ventilation filter matches the fit and function of the original equipment filterDurable construction - this crankcase filter is designed from quality materials for resistance to heat and oil$81.04 - $314.89
- Dorman®OE Solutions™ PCV ValveOE Solutions™ PCV Valve by Dorman®. This PCV valve kit includes necessary components for repairing an original equipment PCV valve on certain vehicle applications.Complete kit - this PCV valve kit includes all components needed to repair valve right the first timeApplication specific - components designed to replace original components on certain vehicles$18.86 - $52.48
- Gates®PCV ValvePCV Valve by Gates®. Emission Valve is constructed from high quality materials for durability and maximum service life. Replacement hose effectively restores the emission system to proper operation and performance.High quality at an affordable priceExpertly made from premium materials$10.72 - $89.13
- Autotecnica®PCV ValvePCV Valve by Autotecnica®. This superior part by Autotecnica is a great alternative solution to the costly factory equipment that will help you restore smooth and efficient operation of your vehicle. Thoroughly designed and rigorously...Designed to replace your worn out factory emission partOptimizes engine cooling performance$6.78 - $34.83
- URO Parts®PCV ValvePCV Valve by URO Parts®. Make your vehicle operating quiet again by replacing your malfunctioning component with this top-notch emission control part. The dependable URO part will make your exhaust system work as it should and help...Designed to replace your worn out exhaust partHelps to restore quiet vehicle operation$2.11 - $33.62
- URO Parts®PCV Valve Hose KitPCV Valve Hose Kit by URO Parts®. Make your vehicle operating quiet again by replacing your malfunctioning component with this top-notch emission control part. The dependable URO part will make your exhaust system work as it should and...Direct replacement for a proper fit every timeEasy installation$53.49 - $55.59
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.