Nose Part – Complete 1-1/8 x 6-1/4″, Atlas Copco part number 3371821031, listed at Crowder Supply as AC-3371821031. This part holds and guides the steel. Elongation of the shank bore is the usual reason for replacement, well before any crack appears.
It is called out in the parts diagram for the LH 39 40E Hydraulic Paving Breaker and LH390 390HBP 400E 400E HBP Hydraulic Paving Breaker. Check it against the reference number on the diagram first; serial breaks change what fits.
The full diagram library indexes every breakdown we publish, and the Atlas Copco catalog has the tools these parts go into. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: 3371821031
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3371821031
- Listed on breakdowns for: LH 39 40E Hydraulic Paving Breaker, LH390 390HBP 400E 400E HBP Hydraulic Paving Breaker

