Marine Alternator For Volvo Penta Rigs And Inboards With 5.0Gi 5.0Gl 5.0Gxi 5.7Gi 5.7Gxi 8.1Gi Replaces 3105M 3860798 Inboard Sterndrive Upgraded Marine Electrical Part

Marine Alternator for Volvo Penta Inboards, 12V 65A (GM) ✔️ 12V 65A, external fan, internal regulator, 6-groove pulley

This marine alternator is a replacement electrical part designed for Volvo Penta inboard and stern-drive engines, compatible with GM, MAN, MANDO, Volvo, and Volvo Penta OEMs. Please verify your OEM part number from your original unit to help ensure fitment.

✅ Voltage: 12V
✅ Amperage: 65A
✅ Fan: External
✅ Regulator: Internal
✅ Pulley: 6-Groove Serpentine (OD 2.646 in / 67.2 mm)
✅ B+ Terminal: 1/4-20
✅ Weight: 11.7 LBS / 5.32 KG
✅ Mounting holes: includes (2) 10mm unthreaded mounting holes
✅ OEM cross references: Sierra 18-5979; Volvo 3860798; 3860082; MANDO AC165622

💡 What is a marine alternator used for in Volvo Penta GM-based engines and why pick a 12V 65A model?

This handy unit keeps the boat's charging system topped up and supports engine accessories on Volvo Penta inboards and stern drives.

• OEM compatibility across Volvo Penta and GM-based installations
• 12V 65A output to support multiple accessories
• Internal regulator with external fan improves performance in marine conditions
• 6-groove pulley and mounting holes fit standard marine belts and mounts