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Description
12V 115A Alternator for Volvo Penta D1 D2 D4 D6 3840181 3803911 21429787 MarineVolvo Penta Alternator 3840181 Premium 115A High Output Marine Replacement This high performance 12V 115 Amp alternator is designed specifically for the demanding marine environment. Engineered to be a direct fit replacement for various Volvo Penta D series diesel engines, it ensures your vessel's electrical systems remain fully charged even under heavy load. This unit features a high grade internal regulator and a multi groove serpentine pulley,
Volvo Penta Alternator 3840181
Premium 115A High-Output Marine Replacement
This high-performance 12V 115 Amp alternator is designed specifically for the demanding marine environment. Engineered to be a direct-fit replacement for various Volvo Penta D-series diesel engines, it ensures your vessel's electrical systems remain fully charged even under heavy load. This unit features a high-grade internal regulator and a multi-groove serpentine pulley, providing a seamless installation process and reliable power delivery.
Key Features
- ✔ 115 Amp High-Output Performance
- ✔ Includes 6-Groove Serpentine Pulley
- ✔ Precision Internal Voltage Regulator
- ✔ SAE J1171 Marine Ignition Protection
- ✔ Direct Replacement for Mitsubishi Models
Technical Specs
| Voltage: | 12V (14V Regulated) |
| Amperage: | 115 Amps |
| Rotation: | Clockwise (CW) |
| Pulley: | 6-Groove Serpentine |
| Regulator: | Internal (IR) |
| Weight: | 7.65 kg (Approx) |
Compatibility / Fitment Guide
| Series | Engine Models | Notes |
|---|---|---|
| Volvo Penta D1 | D1-13, D1-20, D1-30 | Check pulley rib count |
| Volvo Penta D2 | D2-40, D2-55, D2-75 | 115A standard upgrade |
| Volvo Penta D4 | D4-180, D4-210, D4-225, D4-260, D4-300 | Fits various sub-models (A-F) |
| Volvo Penta D6 | D6-280, D6-310, D6-330, D6-350, D6-370, D6-435 | Verify 12V system usage |
OEM Cross Reference
| Brand | Part Numbers |
|---|---|
| Volvo Penta | 3840181, 3817662, 874502, 3803650, 3813430, 21429787, 24110417, 3803911 |
| Mitsubishi | A3TR0091, A3TR0093, A3TR0094, A003TR0091 |
| Lester / WAI | 12745, A-80160 |
Questions & Answers
Is this a genuine original part?
This is a premium quality aftermarket replacement part, manufactured to meet or exceed original equipment (OE) standards for fitment and performance.
How do I know if it is compatible?
We recommend checking the SKU/MPN and Cross Reference list provided above. If your original part number matches any of these, it is a guaranteed fit.
Does this alternator include the pulley?
Yes, it comes fully assembled with a 6-groove serpentine pulley (approximately 51mm-63mm diameter depending on the specific batch) ready for immediate installation.
Note: At 4boats.co.uk, we recommend verifying your original part number against the technical references above before purchasing to ensure 100% compatibility.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy