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This is a generic winding pinion designed as an aftermarket replacement for Rolex part number 4130-204, used in the Rolex Caliber 4130 automatic chronograph movement.
As a key component of the manual winding mechanism, the winding pinion engages with the crown to transfer winding motion to the movement’s gear train, allowing the mainspring to be manually wound.
This generic replacement part offers a cost-effective alternative for watchmakers servicing or restoring Daytona movements when genuine Rolex parts may be difficult to source.
Generic Replacement – Designed for Rolex 4130-204; non-original but matches OEM dimensions and teeth.
Manual Winding Core – Connects the crown to the gear train, transmitting winding torque.
Precision Machined – Accurate gear teeth and sliding surfaces for smooth, durable winding.
Cost-Effective – More affordable than genuine parts, especially when original parts are hard to find.
Direct Replacement – Same installation as the original; no modification required.
| Parameter | Details |
|---|---|
| Part Name | Winding Pinion |
| OEM Reference | Rolex 4130-204 |
| Compatible Movement | Rolex Caliber 4130 automatic chronograph (Daytona) |
| Material | Steel (hardened) |
| Function | Manual winding torque transmission |
Rolex Caliber 4130 automatic chronograph (e.g., Daytona 116500, 116520)
Repair of manual winding failure, crown spinning without effect, or slipping
Replacement of worn or damaged winding pinions during movement service
Economical alternative when genuine parts are difficult to source or overpriced
1. Is this a genuine Rolex winding pinion?
No. It is a generic aftermarket replacement, not original, but matches the 4130-204 dimensions and teeth.
2. What are the symptoms of a damaged winding pinion?
Symptoms: the crown spins freely when winding (no resistance), cannot wind the mainspring; or a slipping sensation during winding. Automatic winding may still work.
3. What should I pay attention to during installation?
The winding pinion sits in the keyless works, mating with the clutch wheel. Clean the parts before assembly. Test smooth winding after installation. Professional help is recommended.
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