Magneto Stator for Aprilia RSV4 2012 | Replaces 857201 / 1A010574

Product Overview

Restore reliable charging and ignition performance to your motorcycle with this 15 coil magneto stator, designed for 2012 Aprilia RSV4 applications.

Built to replace OEM 857201 / 1A010574, this unit helps solve common issues such as battery not charging, hard starting, weak spark, unstable voltage, and intermittent electrical failure. Aprilia’s OEM parts references for the 2012 RSV4 platform show these two stator numbers depending on engine number and flywheel specification.

Manufactured for reliable aftermarket replacement use, this stator features a 3-wire configuration and the common replacement dimensions used for this RSV4/Tuono V4 platform: 42 mm inner diameter, 105 mm outer diameter, 17 mm thickness, 1 plug, and 3 pins.

Product Compatibility

This magneto stator is compatible with the following models:

OEM Cross Reference:
857201, 1A010574

Aprilia’s parts catalog for 2012 RSV4 variants lists both RSV4 1000 APRC Factory STD/SE and RSV4 1000 APRC R, and the engine-drive-shaft fiche identifies 857201 and 1A010574 as the stator references depending on engine/flywheel version.

Specifications

Key Features

• Direct Replacement Design – Engineered to replace the original stator with matching fitment dimensions
• Reliable Electrical Performance – Helps restore stable charging and ignition output
• Durable Construction – Built for dependable service life and reliable performance
• Plug-and-Play Installation – Designed for straightforward replacement on compatible models
• Built for Sportbike Use – Suitable for high-performance street motorcycle applications

Common Problems This Part Can Help Solve

This product may help address issues such as:

• Battery not charging
• Weak or no spark
• Hard starting
• Intermittent electrical failure
• Overcharging or unstable voltage
• Poor ignition performance

Package Includes

1 × Magneto Stator Coil

Fitment Note

Please confirm your OEM part number, connector style, mounting dimensions, flywheel type, and vehicle model/year before ordering.

For 2012 Aprilia RSV4 applications, there are two OEM stator references used by Aprilia:

• 857201 — up to engine V4-A 3413, Mitsubishi flywheel [VM]
• 1A010574 — from engine V4-A 3414, Kokusan flywheel [VK]

If you are unsure about compatibility, contact us with your model, year, VIN, engine number, and part photos before purchase.

Installation Note

Professional installation is recommended.

Before installation, inspect related components such as the battery, wiring harness, regulator/rectifier, flywheel, and charging system to avoid repeat failure caused by another faulty part.

Why Choose This Replacement

A failing stator can lead to charging issues, unstable voltage, weak ignition performance, and unreliable starting. Replacing it with a properly matched unit helps restore dependable electrical performance and keeps your RSV4 ready for consistent riding use.