PCV & Breather Components
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- 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$20.90 - $85.99
- 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
- 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$13.39 - $132.88
- 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$20.33 - $210.06
- Luber-finer®PCV ValvePCV Valve by Luber-finer®. PCV valves are designed to precisely return crankcase combustion gases to the air intake system. Overextending the part's service promotes sludge formation, which clogs the engine's interior surfaces and...High quality plastic and/or steel constructionDirect replacement for a proper fit every time$2.85 - $11.14
- 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$2.85
- 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 - $248.60
- 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
- Crown®Engine Crankcase Breather CapEngine Crankcase Breather Cap by Crown®. Crown Automotive is just the ticket if you want to get the most out of your vehicle as well as revel in a more exciting driving experience. You will surely get a real bang for the buck!Developed to improve your driving experienceConstructed to ensure ultimate operation$14.23 - $32.57
- Crown®PCV ValvePCV Valve by Crown®. Crown Automotive is just the ticket if you want to get the most out of your vehicle as well as revel in a more exciting driving experience. You will surely get a real bang for the buck!Developed to improve your driving experienceConstructed to ensure ultimate operation$10.44 - $37.63
- 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$1.77 - $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
- Kayser®PCV ValvePCV Valve by Kayser®. Valve programme comprises a wide range of control and regulating valves. Kayser focus on maximum efficiency. Kayser produce for you retarding valves, rollover valves, electric valves, ventilation and bleeder valves...High-grade design and construction built to last for yearsPerfect for use in high-speed environments$51.96 - $79.36
- MTC®PCV ValvePCV Valve by MTC®. 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 the auto parts chain...Ideal solution to restore the performance of your vehicleManufactured using high-strength materials for maximum reliability$1.87 - $88.51
- MotoRad®Breather CapBreather Cap by MotoRad®. Keep your vehicle's emission control system functioning properly with this quality product. Manufactured for your specific vehicle, the part meets strict Ford Motor Company standards and incorporates all OE...Built to strict Ford Motor Company specificationsRecommended by Ford Motor Company$3.33 - $4.63
- Novo®PCV ValvePCV Valve by Novo®. 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$3.47 - $15.10
- Omix-ADA®PCV ValvePCV Valve by Omix-ADA®. Designed utilizing the latest technology, this product by Omix-ADA features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or exceed...Performs according to OEM specificationsMeets or exceeds OEM quality standards$5.26 - $26.18
- Standard Motor®PCV ValvePCV Valve by Standard Motor®. 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$1.40 - $12.81
- Trans-Dapt®PCV Breather CapPCV Breather Cap by Trans-Dapt®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect fit for...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$12.64 - $14.85
- 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$94.73
- Vaico®PCV ValvePCV Valve by Vaico®. Designed utilizing the latest technology, this product by Vaico features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or exceed...Made with precision and quality in mindDesigned to meet your specific needs$10.78 - $195.06
- Big End Performance®PCV Breather CapPCV Breather Cap by Big End Performance®. 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...$12.39 - $14.91
- Big End Performance®Clamp On PCV BreatherClamp On PCV Breather by Big End Performance®. This Big End Performance product is just the option for you in case you want to get the most out of your auto. It is made from first-rate materials to provide the highest level of quality....High quality at an affordable priceExpertly made from premium materials$16.27 - $18.98
- Granatelli Motor Sports®Valve Cover BreatherValve Cover Breather by Granatelli Motor Sports®. 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...Made with precision and quality in mindDesigned to meet your specific needs$15.96
- Granatelli Motor Sports®Valve Cover Breather InsertValve Cover Breather Insert by Granatelli Motor Sports®. 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...Made with precision and quality in mindDesigned to meet your specific needs$50.69 - $67.83
- SMP®PCV ValvePCV Valve by SMP®. 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...Designed specifically for motorcycle applicationsPerfect to help you work more efficiently$3.63 - $70.04
- Holstein®PCV ValvePCV Valve by Holstein®. Global coverage of European, Asian, and Domestic vehicles. OE Replacement Parts You Can Trust. The Variable Valve Timing Solenoid alters the supply of oil pressure to the camshaft depending on the speed and load...Holstein focuses on using only the highest quality materialsManufactured to exacting standards for an aftermarket product that is truly built to match or exceed the OE part$2.53 - $50.36
- Hygrade®PCV ValvePCV Valve by Hygrade®. 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$5.04
- Genuine®PCV Valve (11810-AA090)PCV Valve (11810-AA090) 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$23.45
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.