---
description: Generic sapphire crystal for Zenith El Primero 18.0240.4021, 31.5mm pan shape blue AR. Aftermarket replacement, scratch resistant.
title: Generic Zenith El Primero Chronomaster 18.0240.4021 Sapphire Crystal 31.5mm - Sofly
image: https://www.soflypart.com/wp-content/uploads/2022/07/DSC09824.jpg
---
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- **Generic Zenith El Primero Chronomaster 18.0240.4021 Sapphire Crystal 31.5mm**
[](https://www.soflypart.com/wp-content/uploads/2022/07/DSC09824.jpg)
# Generic Zenith El Primero Chronomaster 18.0240.4021 Sapphire Crystal 31.5mm
$110.00
You Saved
| Brand | Choose an option Zenith- 
Clear |
| --- | --- |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $110.00 |
| 3 - 4 | 5% | $104.50 |
| 5 - 9 | 7% | $102.30 |
| 10 - 14 | 10% | $99.00 |
| 15+ | 15% | $93.50 |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $110.00 |
| 3 - 4 | 5% | $104.50 |
| 5 - 9 | 7% | $102.30 |
| 10 - 14 | 10% | $99.00 |
| 15+ | 15% | $93.50 |
Generic Zenith El Primero Chronomaster 18.0240.4021 Sapphire Crystal 31.5mm quantity
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## Product Description
Generic pan‑shaped sapphire crystal for Zenith El Primero Chronomaster 18.0240.4021. Diameter 31.5mm, total thickness 3.1mm, step thickness 1.0mm, blue reflective coating. Aftermarket replacement for damaged original crystals.
## Features & Function
- Pan shape with blue reflective coating – reduces glare.
- Synthetic sapphire – scratch resistant (Mohs 9).
- High optical clarity – maintains dial readability.
- Precise dimensions – drop‑in replacement.
- Affordable alternative to OEM.
## Specifications
| Parameter | Value |
| --- | --- |
| Compatible model | Zenith 18.0240.4021 |
| Diameter | 31.5 mm |
| Total thickness | 3.1 mm |
| Step thickness | 1.0 mm |
| Shape | Pan (stepped) |
| Coating | Blue reflective |
| Material | Synthetic sapphire |
| Hardness | Mohs 9 |
| Type | Aftermarket |
## Applications
- Replace scratched, cracked or damaged original crystal on Zenith El Primero 18.0240.4021.
- Professional watch repair and restoration.
## Frequently Asked Questions
**Q1: Genuine Zenith part?** No, generic aftermarket.
**Q2: Does it include a gasket?** No, use original or purchase separately.
**Q3: Quality reliable?** Yes, from reputable suppliers.
## Why Choose SOFLY Watch Parts?
- Fast worldwide shipping within 3 business days.
- Competitive pricing on Seiko/Hattori calibers.
- 3,000+ watch movements and parts in stock.
- Trusted by watchmakers worldwide.
- Personalized sourcing support via **info@soflypart.com** or WhatsApp **+86 18620212114**.
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