Makita part 417839-8 — Seal Plate (original Makita)

Description: A small but critical seal plate used in the gear/drive assembly of compatible Makita jigsaws and compact saws. The seal plate sits against the push/drive plate inside the gear housing to help keep dust and debris out of the internal mechanism and to ensure correct alignment of the push/pin assembly during blade travel. It’s supplied as the single replacement seal plate (Makita part no. 417839-8) so you can restore proper fit and function without replacing larger assemblies.

Fits (example models): commonly listed for Makita models such as 4340CT, 4340FCT, 4341CT, 4341FCT, 4350CT, 4350FCT, 4351FCT and several cordless and corded jigsaws (BJV140, BJV180, DJV140, DJV180, XVJ03) — check your model’s parts diagram to confirm item 14 / part 417839-8 in the exploded view.

Notes: This is the original Makita replacement part referenced in Makita parts diagrams and the tool service manual; it installs inside the gear housing with the push plate and retaining hardware shown in the parts breakdown. If your tool’s blade movement shows play, dust ingress, or the internal push plate is being misaligned, replacing this seal plate is a targeted, low-cost fix.

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