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!

Whats new?

Take a look at our new featured collector:

2nd quarter 1981 Leslie RS3L