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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...