This is American Pneumatic Tool part number 1280583369, previously 00180 front head Sub-Ass’y – 1-1/8″, stocked at Crowder Supply as APT180. It is the business end of the breaker it locates the tool steel and absorbs the impact reaction, so bore wear here shows up as a loose, rattling shank.
You will find it on the diagram for the 160 Paving Breaker and 160A Airgo Paving Breaker. Worth matching the reference number on the diagram against your own machine before you order the same part number can sit in more than one position.
Use the full diagram library to work through the rest of the assembly, or the American Pneumatic Tool range if you are pricing a replacement machine. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: 1280583369
- Previous part number: 00180
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT180
- Listed on breakdowns for: 160 Paving Breaker, 160A Airgo Paving Breaker

