# 21384685 Kit | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta D2 Additional Alternator Mounting Kit - Alternator Excluded - Part Number: 21384685

  

A genuine Volvo Penta mounting package for installing an additional high-output alternator on selected D2 marine diesels. The kit supports either a 12V 115A or 24V 80A alternator, but the alternator itself is ordered separately.

  

Kit Contents:

  

• 1 x complete additional-alternator mounting hardware package - Volvo Penta 21384685

• Mounting brackets, spacers, belt-tension hardware, pulley / belt components and fasteners are supplied under kit 21384685

• 12V 115A alternator - Volvo Penta 3840181, not included

• 24V 80A alternator - Volvo Penta 3840183, not included

  

⚙️ Key Features

  

• Genuine Volvo Penta extra-alternator mounting kit

• Alternator is explicitly excluded

• Supports 12V 115A or 24V 80A systems

• Designed for later D2-55, D2-60 and D2-75 engines

• Factory belt alignment and bracket geometry

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 21384685 current Volvo Penta additional-alternator mounting-kit reference

  

OEM / Related Numbers:

  

• 21384685

• 3840181 12V / 115A alternator

• 3840183 24V / 80A alternator

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• High-output charging upgrades

• House-battery and commercial electrical systems

• D2 additional-alternator installations

  

Typically suits:

  

• Engine models / drive models:

• D2-55B / C / D / E / F

• D2-60F

• D2-75B / C / D / E / F

• Not intended for the earlier generation-A arrangement unless the parts diagram explicitly states otherwise

  

• HP Range: Approximately 55HP - 75HP

• Engine Type: Volvo Penta D2 inline 4-cylinder marine diesel

• Year Range: Approximately mid-2000s onward

• Serial Range: Engine generation, front pulley and voltage-system controlled; verify engine suffix and alternator voltage before ordering

  

🔌 Function

  

The kit provides the structural mounting and belt drive needed to operate a second high-output alternator without misalignment or bracket overload.

  

Common signs replacement or overhaul is required:

  

• Additional alternator is being installed

• Existing auxiliary bracket is corroded or cracked

• Belt alignment cannot be maintained

• Repower requires later mounting hardware

• Higher charging capacity is required for onboard loads

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 2138.54 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2138.54 AUD | In stock |

## Images

- 21384685 Kit | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21384685-kit-genuine-volvo-penta)
> Updated: 2026-07-30