Crankcase Breathers

1 products

Our Crankcase Breathers range for Harley-Davidson covers replacement breather assemblies for classic Big Twin, Shovelhead, Ironhead Sportster and universal applications where engine pressure needs a clean exit. Supplied by Iron City Motorcycles, an Iron City authorised HD dealer in Leeds, this section includes MCS parts alongside universal solutions that suit both restorers and custom builders. A healthy breather protects gaskets, prevents weeping cases and keeps oil off the rear tyre on older Harley-Davidson motors. Whether you are freshening up a long-stored project, servicing a daily rider, or building a back-to-basics custom Harley-Davidson, our catalogue has the right parts. Every order ships fast from UK stock with technical support from our Leeds workshop team. Browse the full range below.