Premium 12V 65A Replacement for Mercruiser & Yanmar
Upgrade or replace your vessel's charging system with this heavy-duty 400-44108 marine alternator. Engineered specifically for the harsh marine environment, this unit is a direct-fit replacement for Mercruiser V6 and V8 engines as well as various Yanmar marine applications. It provides a steady 65 Amp output to ensure your batteries remain charged even under high electronic loads.
SAFETY FIRST: Fully SAE J1171 Ignition Protected, making it safe for use in engine compartments where gasoline fumes may be present.
Key Features
✔ Ignition Protected: Certified to SAE J1171 standards
✔ Direct Fit: Seamless installation for 2001+ Mercruiser
✔ High Efficiency: 65 Amp output for reliable charging
✔ Built to Last: High-temperature epoxy and internal fans
Technical Specs
Voltage
12V
Amperage
65A
Rotation
Clockwise (CW)
Pulley Type
6-Groove Serpentine
Regulator
Internal (IR)
Fan
Internal (IF)
Compatibility / Fitment Guide
Make
Model/Application
Notes
Mercruiser
4.3L, 5.0L, 5.7L engines
2001 & Newer
Mercruiser
6.2L, 8.1L V8 engines
2001 & Newer
Yanmar
Marine Diesel Engines
Fits various 6LP/6LPA models
OEM Cross Reference
Mercury Marine
863077T, 863077-1, 863077T01
Arrowhead
ADR0438
Lester
8460, 20025
J&N Electrical
400-44108, 400-44046
WAI
12174N
Questions & Answers
Is this a genuine original part?
This is a premium quality aftermarket replacement part from 4Drive, manufactured to meet or exceed original equipment (OE) standards for marine performance and safety.
How do I know if it is compatible?
We recommend checking the 400-44108 SKU and the Cross Reference list provided. This unit specifically replaces the Mercury 863077T series found on 2001+ Mercruiser engines.
Can I use this for gasoline engines?
Yes, this unit is explicitly designed for marine gasoline engines. It is ignition-protected (SAE J1171), which is a mandatory safety requirement to prevent external sparking in enclosed engine rooms.
Note: Please verify your original part number against the references above before purchasing. Distributed by 4Drive (4drive.co.uk).
