# 21429783 Alternator | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta 28V 80A D16 Marine Alternator - Part Number: 21429783

  

Genuine 28-volt 80-amp alternator used on Volvo Penta D16C marine generator and related heavy-duty diesel installations. Genuine remanufactured alternator 3803639 and multiple Bosch/Mahle/Lucas manufacturer equivalents are documented.

  

⚙️ Key Features

  

• Nominal 24V system / 28V charging output

• Rated output: 80A

• Confirmed D16C-A MG application

• Genuine remanufactured option 3803639

• Bosch, Mahle and Lucas equivalents available

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 21429783 - Current new alternator reference

• 3803639 - Genuine remanufactured equivalent

• 20849349 / 20409228 - Earlier or related Volvo references

  

OEM / Related Numbers:

  

• 21429783

• 3803639

• 20849349

• 20409228

• 85000626

• 85003355

  

Aftermarket / Verified Equivalents:

  

• Mahle: MG815

• Lucas Electrical: LEA0630

• HC-Cargo: 114212

• Prestolite Electric: 860804

• Aftermarket alternator family cross-referencing Bosch 0 124 555 009

  

Associated Service Parts:

  

• 3842566 / 23437318 - Alternator brackets by application

• 3589369 - Insulating bushing

• 984737 / 984826 - Flange screws

• 990960 - Flange lock nut

  

🚤 Compatibility

  

Confirmed application:

  

• D16C-A MG

  

Additional application:

  

• Volvo Penta D16 and related heavy-duty engines using the 28V 80A alternator family listed above

  

Specification:

  

• System: 24V nominal

• Charging Voltage: approximately 28V

• Output: 80A

  

• Confirm pulley, mounting bracket, regulator connector and engine serial number

  

🔌 Function

  

The alternator supplies regulated electrical current for battery charging, engine controls and vessel or generator loads.

  

Common signs of failure:

  

• Low charging voltage

• Battery warning

• Intermittent electrical power

• Bearing or pulley noise

• Overheating or burnt terminals

• Excessive AC ripple

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 1662.73 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1662.73 AUD | In stock |

## Images

- 21429783 Alternator | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21429783-alternator-genuine-volvo-penta)
> Updated: 2026-08-03