Harley-Davidson half block from 1920´ties to single cylinder 350cc motor. This could also fit to motor known as "Peashooter". With serial number 3198 This original piece is about 100 years old, so this is not sold as working sparepart.. Use it how you feel, also beatiful decoration. Rare piece. One bracket is broken as seen and also crack on a block. Look pictures carefully as part of description. Allways shipped well packed with tracking.