--- description: Generic mainspring for Audemars Piguet 3120, restores 60h power reserve. Aftermarket alloy steel part. title: Audemars Piguet 3120 Mainspring Replacement Part - Sofly image: https://www.soflypart.com/wp-content/uploads/2023/03/AP-3120-mainspring.jpg --- [Skip to content](#content) * [ Home ](https://www.soflypart.com "Home") * [Products](https://www.soflypart.com/shop/ "Products") * [Watch Parts](https://www.soflypart.com/product-category/watch-parts/ "Watch Parts") * [Watch Mainsprings](https://www.soflypart.com/product-category/watch-parts/mainspring/ "Watch Mainsprings") * **Generic Audemars Piguet 3120 Mainspring** [![Audemars Piguet 3120 Mainspring](https://www.soflypart.com/wp-content/uploads/2023/03/AP-3120-mainspring.jpg)](https://www.soflypart.com/wp-content/uploads/2023/03/AP-3120-mainspring.jpg) # Generic Audemars Piguet 3120 Mainspring $23.00 You Saved | Brand | Choose an optionAudemars piguet![Audemars piguet](https://www.soflypart.com/wp-content/uploads/2023/06/23.jpg)[Clear](#) | | ----- | ------------------------------------------------------------------------------------------------------------------------ | ### Discount | Quantity | Discount (%) | Price | | -------- | ------------ | ------ | | 1 | — | $23.00 | | 2 - 4 | 5 % | $21.85 | | 5 - 9 | 7 % | $21.39 | | 10 - 14 | 12 % | $20.24 | | 15+ | 15 % | $19.55 | ### Discount | Quantity | Discount (%) | Price | | -------- | ------------ | ------ | | 1 | — | $23.00 | | 2 - 4 | 5 % | $21.85 | | 5 - 9 | 7 % | $21.39 | | 10 - 14 | 12 % | $20.24 | | 15+ | 15 % | $19.55 | Generic Audemars Piguet 3120 Mainspring quantity Add to cart x [ Checkout ](https://www.soflypart.com/checkout/) * repair Covers 99% of Repair Needs * Wholesale Discounts * Fast Global Shipping * 24/7 Customer Support ## Product Description Generic mainspring for Audemars Piguet Calibre 3120 automatic movement. Restores original power reserve and reliable performance. Aftermarket replacement for worn or broken original springs. ## Features & Function * Precision‑wound for 3120 barrel – exact fit. * High‑grade alloy steel – durable, fatigue‑resistant. * Restores 60‑hour power reserve and stable amplitude. * Drop‑in replacement – no movement modification. ## Specifications | Parameter | Value | | ------------------ | ---------------------- | | Compatible caliber | Audemars Piguet 3120 | | Power reserve | 60 hours | | Frequency | 21,600 vph (3 Hz) | | Material | High‑grade alloy steel | | Type | Aftermarket | ## Applications * Replace worn/broken mainspring during full service of Calibre 3120. * Suitable for Royal Oak, Royal Oak Offshore, and Jules Audemars models. * Professional watch repair only. ## Frequently Asked Questions **Q1: Genuine Audemars Piguet part?** No, generic aftermarket. **Q2: Which calibers fit?** AP 3120 only (also fits 3126/3840, same mainspring). **Q3: What power reserve after replacement?** 60 hours. ## 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**. ##### Our Popular Items [ ![](https://www.soflypart.com/wp-content/uploads/2026/08/Cartier-caliber-191-mainspring.jpg) ](https://www.soflypart.com/product/cartier-caliber-191-mainspring/) ### [Cartier Caliber 191 Mainspring ](https://www.soflypart.com/product/cartier-caliber-191-mainspring/) [ ![](https://www.soflypart.com/wp-content/uploads/2026/08/ETA-E03.001-4000-Circuit-Block-Electronic-Module.jpg) ](https://www.soflypart.com/product/eta-e03-001-4000-circuit-block-electronic-module/) ### [ETA E03.001-4000 Circuit Block Electronic Module ](https://www.soflypart.com/product/eta-e03-001-4000-circuit-block-electronic-module/) [ ![Zenith El Primero 18.0240.4021 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Drop\u2011in replacement \u2013 no movement modification. Specifications Parameter Value Compatible caliber Audemars Piguet 3120 Power reserve 60 hours Frequency 21,600 vph (3 Hz) Material High\u2011grade alloy steel Type Aftermarket Applications Replace worn/broken mainspring during full service of Calibre 3120. Suitable for Royal Oak, Royal Oak Offshore, and Jules Audemars models. Professional watch repair only. Frequently Asked Questions Q1: Genuine Audemars Piguet part?\u00a0No, generic aftermarket. Q2: Which calibers fit?\u00a0AP 3120 only (also fits 3126/3840, same mainspring). Q3: What power reserve after replacement?\u00a060 hours. 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\u00a0info@soflypart.com\u00a0or WhatsApp\u00a0+86 18620212114.","image":"https://www.soflypart.com/wp-content/uploads/2023/03/AP-3120-mainspring-150x150.jpg","offers":{"@type":"Offer","description":"Product Description Generic mainspring for Audemars Piguet Calibre 3120 automatic movement. Restores original power reserve and reliable performance. Aftermarket replacement for worn or broken original springs. Features & Function Precision\u2011wound for 3120 barrel \u2013 exact fit. High\u2011grade alloy steel \u2013 durable, fatigue\u2011resistant. Restores 60\u2011hour power reserve and stable amplitude. Drop\u2011in replacement \u2013 no movement modification. Specifications Parameter Value Compatible caliber Audemars Piguet 3120 Power reserve 60 hours Frequency 21,600 vph (3 Hz) Material High\u2011grade alloy steel Type Aftermarket Applications Replace worn/broken mainspring during full service of Calibre 3120. Suitable for Royal Oak, Royal Oak Offshore, and Jules Audemars models. Professional watch repair only. Frequently Asked Questions Q1: Genuine Audemars Piguet part?\u00a0No, generic aftermarket. Q2: Which calibers fit?\u00a0AP 3120 only (also fits 3126/3840, same mainspring). Q3: What power reserve after replacement?\u00a060 hours. 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\u00a0info@soflypart.com\u00a0or WhatsApp\u00a0+86 18620212114.","price":"23","priceCurrency":"USD","availability":"http://schema.org/InStock","itemCondition":"NewCondition","priceValidUntil":"2027-12-31","url":"https://www.soflypart.com/product/generic-audemars-piguet-3120-mainspring/?attribute_pa_brand=audemars-piguet"}}],"@id":"https://www.soflypart.com/product/generic-audemars-piguet-3120-mainspring/#richSnippet"}]} ```