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