Breather bolts are a necessary component when running a custom air cleaner on your Harley-Davidson Evolution or Twin Cam motorcycle. Breather bolts are a necessary component when running a custom air cleaner on your Harley-Davidson Evolution or Twin Cam motorcycle.
What are breather bolts used for?
Breather bolts are a necessary component when running a custom air cleaner on your Harley-Davidson Evolution or Twin Cam motorcycle. Stock air cleaners typically have a support bracket integrated, which supports the carburetor and intake manifold and keeps the carburetor from rotating downward from bumps and vibration.Breather bolts are a necessary component when running a custom air cleaner on your Harley-DavidsonHarley-DavidsonBig Twin (Stock) Engine Sizes: Flathead 45ci (737cc) Knucklehead 60ci (983cc) & 74ci (1212cc) Panhead 60ci (983cc) & 74ci (1212cc)https://en.wikipedia.org › Harley-Davidson_engine_timelineHarley-Davidson engine timeline - Wikipedia Evolution or Twin Cam motorcycle. Stock air cleaners typically have a support bracket integrated, which supports the carburetor and intake manifold and keeps the carburetor from rotating downward from bumps and vibration.
What do breather bolts do?
You have to have the breather bolts to let the built up pressure outta the engine. It is the same as the PCV system on your car.27 Oct 2003
What do breather bolts do on a Harley Davidson?
Breather bolts are a necessary component when running a custom air cleaner on your Harley-Davidson Evolution or Twin Cam motorcycle. Stock air cleaners typically have a support bracket integrated, which supports the carburetor and intake manifold and keeps the carburetor from rotating downward from bumps and vibration.