Makita 417433-6 Spare Part - PISTON HR4500C
Makita 417433-6 — Piston (for HR4500C)
Keep your Makita demolition hammer striking like new with this genuine Makita piston, part number 417433-6. This precision-machined piston is the internal impact piston used in the HR4500C SDS‑Max demolition/rotary hammer; it transmits the motor’s energy into the hammering action and is a direct replacement for a worn or scored piston to restore peak chipping performance.
Key details
- Fits: Makita HR4500C (SDS‑Max, 45 mm class rotary/demolition hammer).
- Part: 417433-6, genuine Makita piston (single unit).
- Function: Internal impact piston that transfers reciprocating motion into percussive force; replace if you see excessive wear, scoring, loss of impact power, or if the tool smokes/overheats.
- Condition: Manufactured to original Makita specifications for fit and durability; sized and finished to work with the HR4500C’s cylinder and ram assembly (installation requires disassembly of the tool’s housing and knowledge of hammer internals).
Why this part matters
Replacing a damaged piston restores impact energy, reduces internal wear on the cylinder and ram, and avoids collateral damage to other internal components — a straightforward swap when you have the right service tools and follow the HR4500C service procedure.
What you get
One genuine Makita 417433-6 piston manufactured to original Makita fitment and tolerances, intended specifically for the HR4500C rotary/demolition hammer.
(If you plan the repair yourself, follow the HR4500C service instructions and safety precautions from Makita’s manual before disassembly.)
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Compatible models this part will fit:
