Harley Breather Kits and Parts

Big-bore engines naturally develop excessive blow-by that degrades oil quality and tank pressure—the FEULING Vented Dipstick solves this by actively venting unwanted pressure while you monitor oil levels accurately. This direct replacement screws into...

Blow-by buildup in large-displacement engines creates excessive pressure in your oil tank, leading to oil leaks, contamination, and accelerated wear. The FEULING Vented Dipstick actively manages this pressure while maintaining accurate oil level...

Excessive blow-by in big-displacement engines causes oil sump buildup and pressure that degrades engine seals and breather systems. The FEULING Vented Dipstick solves this problem by actively venting unwanted pressure through a dedicated breather circuit...

Big-bore engines suffer from excessive blow-by that builds unwanted pressure in your oil tank—pressure that degrades seals, forces oil past gaskets, and creates mess. The Feuling Vented Dipstick solves this by actively venting pressure through a breather...

Big-displacement M-Eight engines produce excessive blow-by that accumulates pressure in your oil tank—causing seal failures, oil leaks, and accelerated wear. The FEULING Vented Dipstick actively vents this pressure while letting you monitor oil levels...

Big bore M-Eight engines naturally generate excessive blow-by—unburned gases that build pressure in your oil tank and compromise engine sealing. The Feuling Vented Dipstick actively removes this pressure through a dual-option breather system, protecting...

A clogged breather filter compromises your engine's ability to manage crankcase pressure, leading to oil leakage, seal degradation, and potential performance loss. The Feuling Oil Pump Corp. replacement filter element (3082) restores proper ventilation...

Positive crankcase ventilation directly impacts engine reliability and longevity—poor breather systems allow moisture and blow-by gases to accumulate, degrading oil quality and accelerating internal wear. The FEULING Rocker Box Breather Kit eliminates...

An oil tank breather system prevents crankcase pressure buildup that can compromise seals, gaskets, and engine integrity over time. Feuling's breather kit channels vapors efficiently, reducing oil leakage and extending engine life—especially critical for...

A properly functioning crankcase breather system is essential for protecting your engine and maximizing performance on late-model XL platforms. This complete kit eliminates the complexity of retrofitting aftermarket air cleaners by providing all...

Upgrading to an aftermarket air cleaner transforms your Big Twin's breathing potential, delivering improved throttle response and peak horsepower gains while maintaining seamless compatibility with your stock fuel system. This complete kit eliminates the...

If you're running a '93-'14 Big Twin with factory carburetor or EFI, upgrading to an aftermarket air cleaner means ditching restrictive OEM intake geometry for improved throttle response and airflow efficiency. This DRAG SPECIALTIES support breather kit...

A properly functioning breather tube is essential for maintaining crankcase ventilation and preventing pressure buildup in your engine. This Eastern Motorcycle Parts unit integrates seamlessly with OEM backing plates and air filter assemblies, ensuring...

A properly functioning breather system is critical for engine longevity and consistent performance—inadequate ventilation leads to pressure buildup, oil degradation, and potential seal failure. The EASTERN MOTORCYCLE PARTS Breather Pipe O-6-001 is an...

Proper crankcase ventilation is essential for engine longevity and performance, and a quality breather nipple ensures your '58-'64 engine breathes efficiently without compromising internal pressure. This Eastern Motorcycle Parts nipple maintains proper...

A properly functioning breather system is critical to engine longevity and performance—it prevents crankcase pressure buildup that can compromise seals, gaskets, and overall engine integrity. The EASTERN MOTORCYCLE PARTS Breather Pipe A-24912-48A...

A properly functioning breather system is critical to engine longevity and consistent performance, as it prevents excessive crankcase pressure that can damage seals and compromise oil integrity. The EASTERN MOTORCYCLE PARTS Breather Tube A-29476-99 is...

Big bore engines inevitably produce excessive blow-by, and that pressure buildup can degrade your oil quality and engine seals over time. The Feuling Vented Dipstick solves this problem by venting unwanted crankcase pressure while giving you an accurate...

Big-bore Harley engines are prone to excessive blow-by, which builds unwanted pressure in your oil tank and compromises engine health. The FEULING Vented Dipstick solves this problem by actively venting pressure through a breather system while giving you...

The S&S Cycle Breather Screw is an essential replacement component for maintaining proper crankcase ventilation on your engine. A worn or damaged breather screw can compromise seal integrity, leading to oil seepage and reduced engine reliability. This...