Description
Overview:
The Diode Assembly for Honda GCV520 (GJAKM) engines is a Genuine Honda electrical component designed to control current flow and protect the engine's wiring and charging circuits. Supplied to Honda part specification 31740-Z0A-003, it sits in the engine harness as a one‐way current device that helps prevent reverse feed and electrical faults that can affect starting, charging, and shut‐down functions. The assembly features a compact, sealed body with pre‐terminated leads for a dependable connection and long service life. It is commonly used on V‐twin engines in ride‐on mowers, garden tractors, and other powered equipment using the GCV520 or GCV530 platforms, providing stable and reliable operation under regular outdoor use.
Key Features:
- Genuine Honda OEM part for correct fit and reliable performance
- Designed to protect the charging and ignition circuits from reverse current
- Durable, sealed construction suited to vibration and outdoor environments
- Direct replacement for 31740-Z0A-003 for straightforward maintenance
- Helps resolve symptoms such as battery not charging or engine backfeed issues
- Pre‐terminated leads for quick, tidy installation with minimal tools
- Built to Honda's manufacturing standards to maintain engine reliability
- Compact, lightweight design to integrate neatly within the wiring harness
Typical Applications:
Used as a service replacement when the original diode fails or becomes damaged, often identified by blown fuses, a flat battery due to reverse drain, erratic charging, or difficulty stopping the engine due to electrical backfeed. Suitable for ride‐on mowers, garden tractors, and other equipment powered by Honda GCV520/GCV530 engines where dependable electrical control is required.
Also known as:
Diode unit, blocking diode, one‐way diode, engine harness diode, charging circuit diode, electrical diode assembly, rectifier diode (inline), replacement diode for Honda V‐twin engines.
Fits Models:
GCV520, GCV520U, GCV530, GCV530U, GXV530U
Alternate Part Numbers:
31740-Z0A-003, 31740Z0A003
Product Specifications
| L&S Part No. | 31740 Z0A 003 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Honda |
| OEM No. | 31740Z0A003 |
| Unit of Sale | 1 |
| Applications | GCV520, GCV520U, GCV530, GCV530U, GXV530U |
| Machine Type | Engines |
| Fits Brands | Honda |
| Fits Models | GXV530U (GJAEK) | GCV520U (GJABK) | GCV520 (GJAKM) | GCV530U (GJADK) | GCV530 (GJAJM) |
