PCV & Breather Components

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    • (0 reviews)
      # mpn358726706
      PCV 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
      $6.61
    • (0 reviews)
      # sp13380
      Baffled Oil Catch Can by Mishimoto®. The Mishimoto Baffled Oil Catch Can is the most advanced oil catch can on the market. Every turbo system deserves to be complemented by a proper oil catch can setup, also known as an air oil...
      Allows baffled catch can to be drained without removing it from vehicleNylon barbed mini ball valve can be spliced into rubber hose for ease of draining
      +5
      $157.50 - $423.75
    • (2 reviews)
      # sp13474
      PCV Valve by Motorcraft®. Choose premium replacement brake pads, A/C compressors, oil filters, ignition coils, and more by Motorcraft to restore the performance of your vehicle. Is your CHECK ENGINE light on? Has your vehicle failed a...
      Direct OEM replacementMeets strict Ford Motor Company standards
      $3.57 - $91.30
    • (0 reviews)
      # sp109222
      GM 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
      $3.62 - $54.12
    • (1 review)
      # sp22818
      Aluminum Coolant Overflow Tank by Weapon-R®. Whether you’re going racing or just want to look like you are, this aluminum tank will dress up your engine compartment.
      Manufactured from Billet 6061 AluminumInstalls in OEM location
      $127.50 - $136.00
    • (0 reviews)
      # sp107324
      Oil Catch Can Kit by PERRIN Performance®. The PERRIN Performance Air Oil Separator traps oil from the crank case vents before it enters the intake, thus increasing intercooler efficiency and reduces chances of performance-robbing...
      Increases intercooler efficiencyReduces carbon build up
      $445.50
    • (0 reviews)
      # sp12660
      Oil Separator 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
      $15.29 - $91.08
    • (0 reviews)
      # sp27986
      TechSmart™ Engine Crankcase Vent Valve by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation for...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $23.53 - $88.85
    • (1 review)
      # sp107292
      Oil Catch Can by Moroso®. 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
      +1
      $139.14 - $394.63
    • (1 review)
      # sp22004
      Catch Can Kit by Radium®. 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
      $28.45 - $569.94
    • (2 reviews)
      # sp13483
      Intermotor™ PCV Valve by Standard®. SMP’s vision 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...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $1.73 - $117.66
    • (2 reviews)
      # sp27977
      PCV Valve by Standard®. SMP’s vision 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...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $0.90 - $139.94
    • (0 reviews)
      # sp27987
      TechSmart™ Engine Oil Separator by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation for integrity...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $18.03 - $132.99
    • (0 reviews)
      # sp13485
      TechSmart™ PCV Valve by Standard®. SMP’s vision 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...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $57.22
    • (0 reviews)
      # sp13671
      PCV Valve by Dorman®. Dorman has all the components needed for a complete repair. Quickly and easily installed, it eliminates the clunking noise that may result when this part fails, while restoring original ride control.
      Easy to installDirect replacement for a proper fit
      $9.70 - $70.65
    • (0 reviews)
      # mpn2388043
      PCV Valve Kit by Dorman®. PCV grommet. Standard Replacement. Dorman's PCV Valve Kit contains the PCV valve, bracket, and O-rings, everything you need to restore proper engine performance and engine longevity. Each component in the kit...
      Restores the emissions and vacuum system to proper functioningDirect replacement for a proper fit every time
      $8.23
    • (0 reviews)
      # sp119430
      Engine Oil Separator 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
      $23.30
    • (1 review)
      # sp112233
      Professional™ 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
      $1.87 - $52.30
    • (0 reviews)
      # sp110104
      Crankcase 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...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $40.51 - $370.03
    • (0 reviews)
      # sp143508
      Engine Crankcase Vent Kit 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...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $49.65 - $72.72
    • (0 reviews)
      # sp14932
      Oil Separator by Genuine®. 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...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $5.89 - $1,786.35
    • (2 reviews)
      # sp107260
      PCV Valve by Genuine®. 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...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $24.95 - $215.91
    • (0 reviews)
      # sp107339
      PCV Reroute Kit by Sinister Diesel®. 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...
      High quality at an affordable priceExpertly made from premium materials
      $159.99
    • (0 reviews)
      # sp107284
      Oil Separator 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...
      High quality plastic and/or steel constructionDirect replacement for a proper fit every time
      $15.36 - $310.54
    • (0 reviews)
      # sp12662
      PCV 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
      $1.47 - $6.40
    • (0 reviews)
      # sp107285
      PCV 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...
      High quality plastic and/or steel constructionDirect replacement for a proper fit every time
      $42.56 - $55.86
    • (0 reviews)
      # sp107286
      PCV 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...
      High quality plastic and/or steel constructionDirect replacement for a proper fit every time
      $5.99 - $81.93
    • (0 reviews)
      # sp121604
      Oil Catch Can Cover 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...
      Designed to replace your worn out exhaust partHelps to restore quiet vehicle operation
      $31.32
    • (0 reviews)
      # sp143446
      Engine Crankcase Vent 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...
      Built to restore your emission control systemDesigned to fit your vehicle specifications
      $12.06 - $92.76
    • (0 reviews)
      # sp119391
      PCV 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
      $4.24 - $98.36




    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.

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    PCV & Breather Components Reviews

    Average rating:  4.5  4.5 - 53 reviews
    4.3 of 5
    Leak Oil
    This product leaks oil around the bottom of the breather cap.
    Posted by Franklin D Roddey (Los Angeles, CA) / June 4, 2018
    Was this review helpful for you? Yes
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