Crankcase Breathers

Unfortunately, almost all Harley-Davidson engines that vent the crankcase through the cylinder heads also expel oil through the same passages. Venting directly into the air cleaner, especially a free-flowing air cleaner, often results in an oily mess on...

Unfortunately, almost all Harley-Davidson engines that vent the crankcase through the cylinder heads also expel oil through the same passages. Venting directly into the air cleaner, especially a free-flowing air cleaner, often results in an oily mess on...

Unfortunately, almost all Harley-Davidson engines that vent the crankcase through the cylinder heads also expel oil through the same passages. Venting directly into the air cleaner, especially a free-flowing air cleaner, often results in an oily mess on...

Improved breather hardware for Super E & G air cleaner kits. Banjo fittings are sealed with silicone coated washers instead of O-rings. The washers are much more durable and seal better to prevent leaks. Banjo fittings and breather hose that they plug...

Twin Cam 3/8"-16 x 1.5"

The Biker's Choice Crankcase Breather prevents the breather hose from inhaling impurities into the lower end while quieting the system. Chrome-plated. P/N 489894 features a bolt for attaching to flat surfaces. P/N 603512 has a 3/8" inlet and chrome cap60...

Evolution Big Twin 1/2"-13 x 1.5"

The Biker's Choice Crankcase Breather prevents the breather hose from inhaling impurities into the lower end while quieting the system. Chrome-plated. P/N 489894 features a bolt for attaching to flat surfaces. P/N 603512 has a 3/8" inlet and chrome cap60...

Replacement Filter for Biker's Choice Crankcase Breather P/N 603512. Fits P/N 603512

Stock replacement. Rubber. 08-13 FLH, FLTVehicle FitmentHarley-Davidson FLHR Road King 08-13Harley-Davidson FLHRC Road King Classic 08-13Harley-Davidson FLHT Electra Glide Standard 08-13Harley-Davidson FLHTC Electra Glide Classic 08-13Harley-Davidson...