# 31630-ZW5-003 Honda Alternator | Genuine Used Part

## 🔧 Product Description

**Genuine Honda BF115 / BF130 Belt-Driven Alternator Assembly - Part Number: 31630-ZW5-003**

A genuine used Honda alternator for selected BF115 and BF130 inline four-cylinder four-stroke outboards.

The alternator is belt-driven from the engine and contains an internal rotor, stator, rectifier and voltage regulator. Honda BF130 parts diagrams identify 31630-ZW5-003 as the complete alternator assembly. The original unit is associated with Denso reference 101211-2710.

## ⚙️ Key Features

-   Genuine Honda belt-driven alternator
-   Correct Honda reference 31630-ZW5-003
-   Internally regulated marine charging unit
-   Fits selected Honda BF115 and BF130 engines
-   Sierra, Denso and DB Electrical cross references available

## 🚤 Compatibility

### Commonly used on

-   Honda BF115A outboards
-   Honda BF130A outboards
-   ZW5-series inline four-cylinder powerheads

### Typically suits

-   Engine models:
-   Honda BF115A1
-   Honda BF115A2
-   Honda BF115A3
-   Honda BF115AX
-   Honda BF130A1
-   Honda BF130A2
-   Honda BF130A3
-   Honda BF130A4
-   Honda BF130AX
-   HP Range: 115HP - 130HP
-   Engine Type: Inline four-cylinder, four-stroke EFI outboard
-   Year Range: BF115 approximately 1999 onward for applicable A-series engines; BF130 approximately 1999-2004

## 🔌 Function

The alternator converts engine rotation into electrical current to recharge the starting battery and supply the engine-management, ignition, fuel and accessory circuits.

## ⚠️ Common Signs of Failure

-   Battery does not remain charged
-   Charging warning activates
-   Voltage remains near battery voltage while running
-   Voltage is excessively high
-   Bearings whine or rumble
-   Pulley wobbles
-   Belt slips or produces dust
-   Rectifier or regulator overheats
-   Electrical output becomes intermittent

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   31630-ZW5-003 Honda alternator reference
-   No verified later Honda supersession

### OEM / Related Numbers

-   Honda: 31630-ZW5-003
-   31630ZW5003
-   Denso: 101211-2710
-   Arrowhead / DB Electrical: AND0536
-   Cross-reference marking: CGH72
-   Rotor assembly: 31631-ZW5-003
-   Rectifier assembly: 31710-ZW5-003
-   Regulator assembly: 31750-ZW5-003
-   Alternator bracket: 31636-ZW5-000
-   Alternator stay: 31637-ZW5-010
-   Rear end cover: 31639-ZW5-003

### Aftermarket / Verified Equivalents

-   Sierra: 18-6475
-   DB Electrical: AND0536
-   Denso: 101211-2710
-   Aftermarket Marine: AM31630-ZW5-003
-   Other replacement alternators sold under 31630-ZW5-003 / CGH72

## 📦 Condition

-   Genuine used part
-   Removed from running engine where applicable
-   In good working condition unless otherwise stated

## Details

- **Price:** 300.0 AUD
- **Vendor:** Sawley's Auto and Marine
- **Type:** Charging & Alternators
- **Tags:** Sawley’s AAM Used Parts – Alternators | Marine Charging Systems & Alternators

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 300.00 AUD | In stock |

## Images

- 31630-ZW5-003 Honda Alternator | Genuine Used Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/31630-zw5-003-honda-alternator-genuine-used-part)
> Updated: 2026-09-05