Original DeWalt 492822-00 — Hollow piston for SDS‑Plus rotary hammers. Precision‑machined hollow steel piston that fits into the electro‑pneumatic hammer mechanism to transfer impact energy and restore full hammering performance when the original piston is scored, cracked, or worn.
Key details:
- Part: DeWalt 492822-00 (hollow/impact piston), sold as a single replacement piece.
- Construction: precision machined hollow steel for consistent impact transfer and long service life.
- Small and lightweight — compact service part for the hammer assembly.
- Function: direct replacement inside the electro‑pneumatic striker assembly to restore impact strength and reduce misfires or loss of impact energy.
Fits (example models): commonly used in DeWalt SDS‑Plus rotary hammers such as DC212/DC212B, DC222, DC223, DC228KL, DC232/233 series, DCH213, DCH253, DCH273, DCH363/DCH364 and many other DC/DCH models — confirm against your model’s parts diagram but these are typical fits.
Why buy this part:
- Restores original hammer action without replacing the whole tool.
- Small, inexpensive service part that addresses common hammer failures (worn/scored piston).
- Genuine/original DeWalt part number 492822-00 so you’re replacing the exact component used in the factory assembly.
If your tool matches one of the example models above, this piston is the specific replacement component that returns the electro‑pneumatic hammer to proper function.
