Genuine DeWalt retaining (snap) ring, part number 55520-PWR (listed also as DWB-55520-PWR) — a small, precision-formed Trak-It retainer designed to secure components in the Trak-It nailer assembly.

Typically described on parts lists as a C3‑w3 SP16 retaining ring, it’s the replacement snap/retaining ring you’d use when the original ring that holds the Trak‑It nose or follower in place is worn, bent, or missing.

Example fitments reported in parts databases include Powers Trak‑It W3‑series nailers (for example W3‑21FRH) - confirm the SP16 ring size against your tool’s parts diagram before installing.

Quick benefits: genuine DeWalt part number for direct fit, sold as the single retaining ring you need to restore proper retention and alignment in the Trak‑It nose/follower assembly.