PCV & Breather Components
- Mopar®Crankcase Breather CoverCrankcase Breather 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$202.58 - $403.90Save: up to 11%$182.33 - $359.38
- Mopar®Distribution HousingDistribution Housing by Mopar®. 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...Carefully crafted from premium materialsExcellent corrosion and wear resistance$169.07 - $717.24Save: 10%$152.16 - $645.52
- Mopar®Engine Crankcase Vent Hose Clip BracketEngine Crankcase Vent Hose Clip Bracket 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$12.37 - $47.20Save: 10%$11.09 - $42.47
- 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$14.89Save: 11%$13.18
- Mopar®Transmission BreatherTransmission Breather by Mopar®. 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...Carefully crafted from premium materialsExcellent corrosion and wear resistance$30.03 - $36.56Save: up to 11%$27.03 - $32.48
- Standard®TechSmart™ PCV ValveTechSmart™ 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...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$58.89
- 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
- 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$18.31 - $66.25
- 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®Auxiliary Valve HoseAuxiliary Valve Hose 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...Designed to replace your worn out exhaust partHelps to restore quiet vehicle operation$16.55
- 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
- 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
- URO Parts®PCV Valve KitPCV Valve 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 help...Direct replacement for a proper fit every timeEasy installation$20.44 - $84.41
- URO Parts®PCV Valve Tubing RestrictorPCV Valve Tubing Restrictor 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$11.30
- 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
- Aisan®PCV ValvePCV Valve by Aisan®. 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...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$4.29 - $261.71
- Febi®Crankcase Ventilation ValveCrankcase Ventilation Valve by Febi®. 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...The finest quality at a great priceEngineered to provide reliable performance for years to come$13.32 - $132.12
- Febi®PCV ValvePCV Valve by Febi®. 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 quality...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$20.00 - $210.06
- Professional Parts Sweden®PCV ValvePCV Valve by Professional Parts Sweden®. 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...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$2.44
- Vaico®Crankcase Breather Oil Scraper PlateCrankcase Breather Oil Scraper Plate by Vaico®. 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$5.54
- Vaico®Crankcase Breather Oil TrapCrankcase Breather Oil Trap by Vaico®. Quality results from the consistent pursuit of a customer-focused strategy. Clients wishes are in the center of business. Vaico aim: the best quality for your satisfaction. As a result, many of...Designed to provide long-lasting service lifeMade utilizing state-of-the-art equipment$20.46 - $180.38
- Vaico®Crankcase Housing CoverCrankcase Housing Cover by Vaico®. Quality results from the consistent pursuit of an customer-focused strategy. Clients wishes are in the center of business. Vaico aim: the best quality for your satisfaction. As a result, many of Vaico...Designed to provide long-lasting service lifeMade utilizing state-of-the-art equipment$26.14 - $119.57
- Vaico®Engine Crankcase Breather CapEngine Crankcase Breather Cap by Vaico®. From breather tube to breather tube to valve cover. Original equipment manufacturer quality. Quality results from the consistent pursuit of a customer-focused strategy. Clients wishes are in the...Designed to provide long-lasting service lifeMade utilizing state-of-the-art equipment$94.59
- Vaico®Tank Breather Activated Carbon FilterTank Breather Activated Carbon Filter by Vaico®. Material Type: Activated Carbon. 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$131.21
- 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$13.74 - $34.83
- Baldwin Filters®Crankcase BreatherCrankcase Breather by Baldwin Filters®. Baldwin crankcase ventilation filters reduce blow-by, which is generated by combustion gases leaking past piston rings, producing oil droplets that would otherwise increase emissions.High quality at an affordable priceExpertly made from premium materials$6.28 - $79.38
- Baldwin Filters®Vapor Canister FilterVapor Canister Filter by Baldwin Filters®. 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$4.31
- Elring®PCV BreatherPCV Breather by Elring®. For professional repairs, place your trust in gaskets, gasket sets and service parts from Elring - the reliable and experienced supplier of spare parts to original equipment standard. The entire Elring range of...Expertly Crafted from the highest grade materialsMade to provide maximum accuracy and dependability$1.23
- FRAM®PCV ValvePCV Valve by FRAM®. The Positive Crankcase Ventilation (PCV) system prevents the release of harmful emissions, helps keep engine oil clean and prevents excessive crankcase pressure, which can cause oil leaks. Maintain peak PCV system...Essential component of the PCV systemRegulates flow of crankcase vapors into the engine$1.90 - $9.00
- Forecast®PCV ValvePCV Valve by Forecast®. 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...High quality at an affordable priceExpertly made from premium materials$5.91 - $191.84
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.