Welcome to Precision Parts NW!
Our goal is to preserve the past and provide for the future of locomotive air horns and industrial signaling devices.
Documentation covering technical drawings to interesting articles/history.
Get to know the founders and their horn collections.
Check out the fastener sizes page for information about nuts and bolts for horns.
Have a look at the parts store for the latest locomotive horn items, such as our new Leslie S diaphragms!
2nd quarter 1981 Leslie RS3L