Valve Cover Breather Components

Earl's Performance PCV Fittings for GM LS

Earl's Performance PCV fittings for GM LS allow easy installation of a catch tank on the GM LS racing engines that have a PCV fitting on the OE valve cover. These breather adapter fittings have a 3/4 in. O.D. that fits into the OE grommet instead of the stock PCV fitting. Choose from fittings with -8 AN or -10 AN male flare. They're ideal for use in racing applications that require the use of a catch tank.

4.89 out of 5 stars ( 9 )

$16.24

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$17.92

Allstar Performance Breather Socks

Allstar Performance breather socks help catch residual oil discharged from the engine through valve cover breathers. They offer a practical alternative to wrapping dirty shop rags around valve cover breathers! The socks fit over standard 3 in. diameter, 2 1/2 in. tall valve cover breathers and are easily cleaned with a mild detergent. They're available for both standard and shielded breather models.

4.57 out of 5 stars ( 7 )

$7.99

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$10.99

Fathouse Performance Valve Cover Fittings

Now you can run your 10AN lines to a catch can or breather system. Fathouse Performance valve cover fittings are stylish and feature a durable black finish with the FatFab logo. They are available individually or in pairs. Select the quantity needed.

Not Yet Reviewed

$79.99

Radium Engineering Press-In Valve Cover Fittings

Radium Engineering press-in valve cover fittings require no drilling or welding. These low-profile swivel fittings simply press-in. Radium offers valve cover fittings for PCV valve replacement and crankcase vent ports. These good-looking fittings feature stainless/aluminum construction, an anodized finish, and laser engraving with the Radium name.

Not Yet Reviewed

$56.95

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$56.99

PRW Modular Valve Cover Fitting Adapters

PRW Industries modular valve cover fitting adapters can help to properly vent your crankcase when you're using custom or fabricated valve covers. These fittings will go on either side of the engine to install a breather or oil catch can (depending on the model ordered). They're machined from billet aluminum and available in different anodized finishes to complement your engine compartment. The adapters also include fittings and O-ring seals.

5.0 out of 5 stars ( 2 )

$26.99

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$29.99

Offenhauser Replacement Valve Cover Breather Gaskets

Offenhauser replacement valve cover breather gaskets help to maintain a tight seal for optimum performance. Even though your original Offy rectangular breathers were furnished with gaskets, they will need to be replaced anytime you remove the breather for service. To preserve optimum operation, genuine Offenhauser gaskets should be your only choice to gain the correct, leak-free fit for your valve cover breathers.

4.0 out of 5 stars ( 2 )

$12.99

ICT Billet Press-In LS Valve Cover Fittings

Upgrade your LS engine's crankcase ventilation system with ICT Billet press-in LS valve cover fittings that are available in a range of AN sizes to support a wide range of custom PCV, breather, and catch-can hose configurations. Designed to replace the factory valve cover hose barb, these precision-machined fittings press directly into factory LS valve covers, providing a clean, secure, and leak-resistant connection without welding or extensive modifications. Manufactured from premium billet aluminum, ICT Billet fittings deliver exceptional durability, corrosion resistance, and a professional motorsports appearance for street, performance, and race applications. Select the LS valve cover fittings for your application needs.

Not Yet Reviewed

$23.00

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$23.99

Allstar Performance Valve Cover Breather Covers

Allstar Performance valve cover breather covers fit 3 in. diameter breathers commonly found on valve covers, breather tanks and helmet systems. The covers with drawstring are designed to fit both shielded and non-shielded breathers. Add another layer of protection against dirt, dust and debris with these water-repellent valve cover breather covers from Allstar Performance.

Not Yet Reviewed

$12.99

ICT Billet LS Valve Cover PCV Adapters

ICT Billet LS valve cover PCV adapters are designed to simplify custom PCV and crankcase ventilation plumbing and give a clean finished look. The billet aluminum valve cover grommet fitting provides a clean, secure connection for aftermarket hose systems while retaining compatibility with factory-style valve cover grommet locations. Precision-machined from billet aluminum, it offers long-lasting durability, corrosion resistance, and a professional appearance that's ideal for high-performance, street, or swap applications. Engineered for a direct fit in valve covers that utilize a rubber PCV grommet, this fitting helps create a tidy, leak-resistant installation without permanent modifications.

Not Yet Reviewed

$23.00

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$23.99

Cunningham Machine Billet Blow-By Tube Ends

Cunningham Machine's billet blow-by tube ends are top-quality spares for their quick-change billet blow-by tubes. They are offered in sizes and finishes to match tubes. Each tube end includes O-rings. Select the size needed. Note: Racing use only, not legal for highway use

Not Yet Reviewed

$32.99

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$34.99

Crown Automotive PCV Valve Gaskets

To control the pressure inside the crankcase, a PCV valve is used for venting. A positive seal can be maintained with Crown Automotive PCV valve gaskets. These OE-style replacement components are a direct fit for the applications specified.

Not Yet Reviewed

$1.99