Audemars Piguet Caliber 3120/3126 Movement Sliding Pinion

Quantity	Discount (%)	Price
1 - 2	—	$165.00
3 - 4	5 %	$156.75
5 - 9	7 %	$153.45
10 - 14	10 %	$148.50
15+	15 %	$140.25

Quantity

Discount (%)

Price

1 - 2

—

$165.00

3 - 4

5 %

$156.75

5 - 9

7 %

$153.45

10 - 14

10 %

$148.50

15+

15 %

$140.25

Quantity	Discount (%)	Price
1 - 2	—	$165.00
3 - 4	5 %	$156.75
5 - 9	7 %	$153.45
10 - 14	10 %	$148.50
15+	15 %	$140.25

Product Description

This is a genuine Audemars Piguet sliding pinion for the Caliber 3120 and 3126 automatic movements, a Swiss‑made original component. As the core of the keyless works, the sliding pinion is mounted on the winding stem and works with the clutch wheel to switch between winding and time‑setting modes. This original factory part is the ideal replacement for watchmakers to restore crisp, smooth mode switching during service or repair.

Features & Function

Genuine Audemars Piguet Part – Swiss factory‑original for the keyless works of Caliber 3120 and 3126, not a copy.

Mode Switching Core – Slides along the winding stem to switch between winding and time‑setting modes.

Precision Machined – Accurate gear teeth and sliding surfaces for smooth mode switching and reliable engagement.

Essential for Service – Replace when crown positions are vague, cannot switch, or operation feels sticky.

Compatible Movements – Designed for Audemars Piguet Caliber 3120 automatic and the 3126/3840 chronograph based on the same platform.

Specifications

Parameter	Details
Part Name	Sliding Pinion
Compatible Movements	Audemars Piguet Caliber 3120, 3126/3840 automatic
Movement Diameter	26.60 mm
Movement Thickness	4.25 mm (3120) / 7.00 mm (3126/3840, with chronograph module)
Jewels	40 (3120) / 59 (3126/3840)
Frequency	21,600 vph (3 Hz)
Power Reserve	Approx. 60h (3120) / 50h (3126/3840)
Function	Switches between manual winding and time‑setting modes
Origin	Switzerland
Condition	Brand new, genuine

Applications

Audemars Piguet Caliber 3120 automatic movement (found in Royal Oak 15300, 15400, 15450; Jules Audemars, etc.).

Audemars Piguet Caliber 3126/3840 automatic chronograph movement (found in Royal Oak Offshore Chronograph models).

Repair of vague keyless positions, inability to switch modes, or sticky operation.

Replacement of worn, deformed, or rough‑sliding sliding pinions during movement service.

Frequently Asked Questions

1. Is this a genuine Audemars Piguet sliding pinion?
Yes. It is a Swiss factory‑original part for Caliber 3120 and 3126, not a copy.

2. What are the symptoms of a damaged sliding pinion?
Symptoms: vague crown positions; cannot stay in setting mode; crown cannot be pulled out or pushed back; winding works but setting does not, or vice versa.

3. As a chronograph movement, does the 3126 share the same sliding pinion as the 3120?
Yes. The 3126 is based on the 3120 with a modular chronograph addition, but the base keyless works are identical – the sliding pinion is fully interchangeable.

4. What should I pay attention to during installation?
The sliding pinion sits on the stem. Clean the keyless works before assembly. Test smooth mode switching after installation. Professional help is recommended.

5. Does the clutch wheel need to be replaced at the same time?
Not always. If the clutch wheel teeth are also visibly worn (rounded), replace both. Inspect both components.