21173894 Alternator Kit | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta alternator kit rated 12 V and 115 A for D9 and D11 marine engines, weighing 5.398 kg and listed for 32 applications across the D11, D9 and D8 ranges. The accessories catalogue lists it among the alternator kits that include the alternator. The 24 V, 80 A kit for the same engines is 21173893.

🚤 Compatibility

• Engine Family: D
• HP Range: Approximately 755 HP
• Year Range: Approximately 2004 onward

Full model list at the end of this description.

⚙️ Key Features

• 12 V, 115 A output
• For D9 and D11 marine engines
• Listed as an alternator kit including the alternator
• 5.398 kg
• 24 V, 80 A equivalent is 21173893
• Supplied complete with the alternator
• Capacity: 12V/115A
• Fits: D9, D11

📋 Kit Contents

• 1 x 12-volt 115-amp alternator - supplied within kit 21173894
• 1 x engine-specific alternator mounting-bracket package - kit-only component numbers are not fully published
• 1 x belt / tensioning and pulley connection package as required by the engine installation - kit-only component numbers are not fully published
• 1 x electrical connection and mounting-hardware package - supplied under kit 21173894

🔌 Function

Converts engine-driven rotation into 12 V electrical power for charging an auxiliary battery bank and supplying vessel loads.

⚠️ Common Signs of Failure

• Charging voltage or current below specification
• Battery warning or low-voltage alarms staying active
• Alternator, belt or bracket running out of alignment
• Bearing noise, overheating or a burning smell
• Chafed cable insulation or damaged terminals at the alternator

🛠️ Service Notes

• This is the 12 V kit and 21173893 is the 24 V one, so match the vessel's system voltage
• The two kits share the same engine list and differ by voltage and rating, not by application
• Set belt alignment and tension after fitting, and re-check once the belt has bedded in

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 12V / 115A output rating

Other-Brand OEM Numbers

• Bosch, Prestolite and Balmar 12-volt high-output alternators are functional alternatives only after pulley, mounting, rotation, regulator and output-cable verification

Aftermarket / Verified Equivalents

• Golden Arrow: GAM0028189 supplier cross-reference for genuine 21173894

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D11C1-A MP, D11C3-A MP, D11C2-A MP, D11C4-A MP, D11B3-A MP, D11B4-A MP, D11A-A, D11A-B, D11A-C, D11A-D, D11A-E, D11B2-A MP, D11A-C MP, D11A-D MP, D11A-E MP, D11B1-A MP
• Volvo Penta D9A2J, D9A2G, D9A2L MH, D9A2D, D9A2B, D9A2F, D9A2K, D9A2H, D9A2M MP, D9A2A, D9A2C, D9A2E
• Volvo Penta D8A5-A MH, D8A6-A MH, D8A3-A MP, D8A4-A MP