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This is a generic winding stem designed as an aftermarket replacement for Jaeger-LeCoultre Caliber 899, with confirmed compatibility extending to calibers 938, 896, 924, 866, 937, and 925 .
The winding stem is a critical component of the keyless works, transmitting rotational force from the crown to the movement to enable manual winding and time setting.
Made from durable steel, this brand new replacement part provides a cost-effective solution for watchmakers servicing JLC movements where the original stem is worn, stripped, or damaged.
Generic Replacement – Non-original but accurately sized for JLC calibers listed.
Broad Compatibility – Fits Caliber 899, 938, 896, 924, 866, 937, 925, and possibly others.
Stainless Steel – Durable, corrosion-resistant for long-term reliability.
Essential for Service – Replaces worn, stripped, or bent original stems to restore crown function.
Cost-Effective – Affordable alternative for movement service.
| Parameter | Details |
|---|---|
| Part Name | Winding Stem |
| Compatible Movements | JLC Caliber 899, 938, 896, 924, 866, 937, 925 |
| Material | Stainless steel |
| Type | Generic aftermarket |
| Function | Transmits torque for manual winding and time setting |
JLC Caliber 899 and compatible movements (e.g., Master Ultra Thin, Reverso)
Repair of loose crown, inability to set time or wind due to worn original stem
Replacement of aged or damaged stems during movement service
1. Is this a genuine JLC winding stem?
No. It is a generic aftermarket replacement, not original, but dimensionally matched to the listed calibers.
2. How do I know if it fits my movement?
This stem is confirmed for Calibers 899, 938, 896, 924, 866, 937, 925. If your movement is on the list, it fits. Otherwise, measure your original stem length and thread.
3. What should I pay attention to during installation?
Insert the stem so the setting lever engages the groove. Test smooth mode switching. Professional installation is recommended.
4. Will the stem rust?
Stainless steel offers good corrosion resistance. Avoid prolonged exposure to seawater or chemicals.
5. Does the stem need to be cut to length?
The stem is made to standard length for the movement. Case-specific tube depth may require trimming. Professional watchmakers should do this.
Fast worldwide shipping within 3 business days.
Competitive pricing on Seiko/Hattori calibers.
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