Yamaha YZF-R1 RN12 / RN19 Alternator Stator 2004-2008
Aftermarket replacement alternator stator / generator winding assembly for Yamaha YZF-R1 998cc models using the 5VY / 2D1 Yamaha stator family.
Product Details
- Product type: Alternator stator / generator winding assembly
- Charging-system application: Yamaha motorcycle 3-phase alternator
- Connector: single 3-pin plug on the common replacement specification
- Wiring: 3 output wires
- Includes wiring lead and rubber cable grommet as fitted to the assembly
- Condition: Brand new aftermarket replacement
Yamaha OE / Replacement Numbers
- 5VY-81410-00-00 – original early YZF-R1 stator reference
- 2D1-81410-00-00
- 2D1-81410-01-00
- 2D1-81410-10-00 – later Yamaha superseding stator reference
These Yamaha numbers are supplied for identification and cross-reference only. This listing is for an aftermarket replacement stator and is not represented as Genuine Yamaha.
Reference Dimensions
Specialist replacements for this Yamaha OE family are commonly specified at approximately:
- Stator inner diameter: 18 mm
- Stator outer diameter: 68 mm
- Stator thickness / stack depth: 42 mm
- Wire length from stator to grommet: approximately 125 mm
- Wire length from grommet to plug: approximately 500 mm
Some aftermarket manufacturers measure the winding stack slightly differently, so use the product photographs, connector and original OE number as the final fitment check.
Electrical Reference
A specialist replacement for this OE family specifies approximately 0.4 ohm ±20% resistance between each pair of alternator output wires. Resistance should be even across all three phases and there should be no continuity from an output wire to the stator core / earth.
Important Fitment Checks
- Compare the original Yamaha OE number where available.
- Confirm the stator body diameter, centre bore and mounting-hole arrangement match the original.
- Compare the rubber grommet position and wiring length.
- Confirm the motorcycle has the matching 3-pin charging-system connector.
- Check the regulator/rectifier, connector condition and charging-system wiring before replacing the stator.
Installation Advice
Disconnect the battery before electrical work. Inspect the generator rotor, stator cover and wiring for heat damage, loose magnets, burnt connectors or contamination. Use thread-locking compound on the stator retaining screws where specified by the workshop manual, route the cable through the original grommet correctly and prevent the wiring from contacting the rotor.
After fitting, verify charging voltage and AC output before returning the motorcycle to service. A failed regulator/rectifier or damaged connector can cause repeat stator failure.
Package Contents
1 x aftermarket alternator stator / generator winding assembly as shown in the product photographs.
Shipping Information
- Packed shipping weight: approximately 1.10 kg
- Estimated packed dimensions: 20 x 16 x 8 cm
Compatibility
- YZF-R1 RN12 – 2004, 2005 and 2006
- YZF-R1 SP / Limited Edition RN12 – 2006
- YZF-R1 RN19 – 2007 and 2008
Fitment note: Yamaha superseded the original 5VY-81410-00-00 stator through the 2D1 series to 2D1-81410-10-00. Check the OE number, 3-pin connector, grommet and physical dimensions before ordering.