Description
ARCO Marine 12V 65A Alternator w/ 55mm Pulley | Boat Supply Store
Restore dependable electrical charging to your vessel's propulsion system with this ARCO Marine premium replacement inboard alternator. Engineered to meet or exceed original equipment manufacturer specifications, it delivers a robust 12-volt, 65-amp output essential for powering onboard electronics. The integrated 55mm multi-groove pulley ensures precise belt engagement and efficient operation, critical for maintaining battery charge during extended offshore fishing excursions.
Key Features
- OEM-level performance guaranteed
- Precision-engineered for reliability
- High-output 65-amp charging
- 12-volt system compatibility
- 55mm multi-groove serpentine pulley
- Direct replacement for key Volvo Penta PNs
- Durable construction for marine environments
- Backed by a comprehensive warranty program
Specifications
| Product Specifications | |
|---|---|
| Voltage | 12V |
| Amperage Output | 65A |
| Pulley Type | Multi-Groove |
| Pulley Diameter | 55mm |
| Replaces Volvo Penta PNs | 3862665, 3884950 |
| Replaces Sierra PNs | 18-5882, 18-6845 |
Who This Is For
Boat owners with late model Volvo Penta inboard engines requiring a reliable 12V, 65A alternator replacement. This unit is ideal for those seeking a premium, engineered solution that meets or exceeds OEM specifications for dependable power generation.
How It Compares
| Feature | ARCO Marine 12V 65A Alternator w/ 55mm Pulley | SIERRA 18 |
|---|---|---|
| Amperage | 65A | 65A |
| Voltage | 12V | 12V |
| Pulley Type | Multi-Groove | Multi-Groove |
| Pulley Diameter | 55mm | — |
| Replaces | Volvo Penta 3862665, 3884950; Sierra 18-5882, 18-6845 | Volvo Penta 3862665, 3884950 |
| Warranty (Standard) | 12 months (leisure), 90 days (commercial/racing) | 1 Year Limited |
Common Concerns Answered
Will this alternator fit my specific engine model if it's not explicitly listed?
While this ARCO Marine alternator is designed as a direct replacement for specified Volvo Penta and Sierra part numbers, it is crucial to verify compatibility with your exact engine serial number. Occasional fitment variations can occur on highly specific or older engine models not explicitly cataloged, necessitating pre-purchase confirmation.
What is the standard warranty coverage for this alternator?
The ARCO Marine alternator comes with a standard warranty of 12 months for leisure applications and 90 days for commercial or racing use. For extended coverage, customers are encouraged to register their product through the ARCO Marine website.
How complex is the installation process for this alternator?
Installation is rated as moderate (3 out of 5), requiring basic mechanical aptitude, including proper belt tensioning and accurate electrical connections. Familiarity with marine engine systems and adherence to specified torque values for mounting and pulley installation are essential for successful integration.
Frequently Asked Questions
What is the amperage output of this ARCO Marine alternator?
This ARCO Marine alternator provides a substantial 65-amp output.
What type of pulley does this alternator have, and what is its size?
The alternator is equipped with a 55mm multi-groove serpentine pulley.
Which Volvo Penta models is this alternator compatible with?
This alternator directly replaces Volvo Penta part numbers 3862665 and 3884950.
What is the warranty period for this ARCO Marine alternator?
The standard warranty is 12 months for leisure use and 90 days for commercial/racing applications. Extended warranty options are available via product registration.
Can I return this product to the original point of purchase if I have an issue?
Return policies are determined by the point of purchase. It is recommended to consult with BoatSupplyStore.com regarding their specific return procedures and any associated warranty claims processing.
