Harley Breather Kits and Parts

If you're running the Assault Charge Air Cleaner on your Twin Cam engine, you're already committed to maximizing airflow—but recirculating oil mist back through your intake defeats that purpose. The TRASK External Breather Kit converts your system to...

If you're running a forced-induction M8 with the Assault Charge Air Cleaner, venting crankcase pressure to atmosphere rather than recirculating oil mist through your intake preserves fuel quality, reduces carbon buildup, and maintains peak combustion...

Excessive crankcase pressure degrades engine performance, increases oil sump levels, and forces blowby contamination into your oil tank—all issues that reduce efficiency and engine longevity. The Feuling Vented Dipstick solves this by actively venting...

Excessive crankcase pressure doesn't just damage your engine—it burns oil, kills performance, and fouls your crankcase. The Feuling Oil Pump Corp. Vented Dipstick solves this problem by actively venting pressure through an integrated PCV-style separator...

Excessive crankcase pressure degrades oil quality, reduces engine efficiency, and forces blowby into your oil tank—ultimately compromising engine longevity and performance. The Feuling Vented Dipstick eliminates this problem by actively venting pressure...

Excessive crankcase pressure degrades oil quality, reduces engine efficiency, and forces blowby into your oil tank—all issues that compromise performance and longevity. The FEULING Vented Dipstick actively manages this pressure through a PCV-style...

Crankcase blow-by vapor carries oil and contaminants that degrade combustion efficiency and engine longevity. A quality catch can intercepts this vapor before it reaches your intake, protecting your engine while unlocking measurable gains in horsepower...

Crankcase vapors loaded with oil and contaminants degrade combustion efficiency and accelerate engine wear. The DK CUSTOM PRODUCTS Catch Can intercepts these vapors before they cycle back into your intake, preserving air quality and protecting internal...

Proper crankcase ventilation is critical for engine longevity and performance, especially in high-output builds where pressure buildup can compromise seals and gaskets. The Feuling External Breather Kit converts your air cleaner backing plate to external...

If you're running a Feuling vented dipstick system, maintaining proper breather line integrity is critical to preventing oil carryover and misting issues. This OEM replacement kit gives you everything needed to restore your venting system to factory...

A vented dipstick cap is critical for accurate oil-level readings and proper crankcase ventilation—two non-negotiables for engine longevity and performance diagnostics. If your FEULING vented dipstick cap is damaged, worn, or missing, this polished...

Excessive crankcase pressure compromises engine sealing integrity and accelerates wear on gaskets and seals—a common failure point in high-mileage Twin Cam engines. The FEULING OIL PUMP CORP. Rocker Box Breather Rebuild Kit restores proper ventilation...

A properly functioning breather system is critical for engine longevity and performance—it prevents crankcase pressure buildup that can compromise seals and gaskets while reducing blow-by contaminants. The FEULING OIL PUMP CORP. Breather Rebuild Kit...

Head breather oil carryover is a common problem on M8 engines that leads to messy drips, clogged air filters, and unnecessary performance loss. The TRASK Transmission Cover eliminates this issue at the source by venting excessive crankcase pressure...

A properly ventilated transmission cover keeps heat and pressure from building up in your M8 engine bay, maintaining optimal fluid temperatures and extending transmission life under sustained performance demands. The TRASK vented design ensures...

Proper crankcase ventilation is critical for engine longevity and reliability, especially in high-performance applications where pressure buildup can compromise seals and gaskets. The FEULING Oil Tank Breather Kit eliminates excessive crankcase pressure...

An oil tank breather kit prevents pressure buildup in your crankcase, protecting seals and gaskets from premature failure while reducing oil leakage and maintaining consistent engine performance. Proper crankcase ventilation is essential for long engine...

An oil tank breather kit is essential for maintaining proper crankcase ventilation and preventing pressure buildup that can damage seals and gaskets. This stainless steel unit from Feuling offers superior corrosion resistance and longevity compared to...

Proper crankcase ventilation is essential for engine longevity and performance—excessive pressure buildup can compromise seals, degrade oil, and reduce overall reliability. The Feuling Oil Tank Breather Kit eliminates these issues by managing crankcase...

A properly functioning breather system is critical to maintaining crankcase pressure and preventing oil leakage, seal degradation, and internal engine damage. This stainless steel breather kit from Feuling eliminates restrictive factory designs, ensuring...