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