The genuine FX service kit for the Impact M3 and M4 Power Plenum — the same power plenum now standard across the current Impact line. Contains the common O-rings and seals that see the most wear, so you can restore a tight, leak-free action without hunting down parts one at a time.

Comes complete with detailed drawings, making it easy to follow along for a full teardown or a quick refresh.

Includes: common wear O-rings and seals for the Impact M3/M4 Power Plenum and valve system

Fits: FX Impact M3, FX Impact M4 (and MKII with Power Block and Power Plenum installed)

Recommended for: routine maintenance, restoring lost power/air efficiency, or general revision