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This is a high-quality generic replacement chronograph pusher designed for the Hublot Classic Fusion 45mm titanium chronograph (reference 521.NX). It is available in three color options: silver, black, and rose gold. It is used to replace worn, damaged, or lost original pushers, thereby restoring the smooth operation of the watch‘s chronograph functions and maintaining Hublot’s distinctive modern aesthetic.
Collection: Hublot Classic Fusion Chronograph
Compatible References: 521.NX.xxxx.RX / LR (e.g., 521.NX.1171.RX, 521.NX.7071.RX, etc.)
Case Size: 45 mm
Movement: HUB1143 Self-winding Chronograph
Original Water Resistance: 50 m / 5 ATM
Pusher Color Options: Silver, Black, Rose Gold
Functions: Chronograph Start, Stop, and Reset
Q1: Which color is the most durable?
A: All three have stainless steel bases. Black and rose gold are PVD coated; the coating may wear off at edges over time. Silver is raw stainless steel and will not fade.
Q2: Can I install without threadlocker?
A: Not recommended. Chronograph pushers are subject to frequent pressing and vibration. Without threadlocker, they will loosen. Low‑strength threadlocker prevents loosening while allowing future removal.
Q3: Will the watch retain its 50m water resistance after replacement?
A: Due to tolerance variations in generic parts, the original 50m rating cannot be guaranteed. Always perform a water resistance test after installation. Conservative use (splash‑proof, no swimming) is advised.
Q4: Does this pusher include the internal spring and O‑ring?
A: Usually yes – some versions come pre‑assembled with spring and O‑ring, others may not. Confirm with the seller before ordering.
Fast worldwide shipping within 3 business days.
Competitive pricing on Seiko/Hattori calibers.
3,000+ watch movements and parts in stock.
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