This 12-volt, 55-amp marine alternator is a direct replacement for various Crusader and Yamaha inboard engine configurations. Engineered specifically for the harsh marine environment, this unit features a corrosion-resistant finish and internal regulation for a simplified 2-wire or 3-wire hookup. It is built to meet or exceed original equipment performance, ensuring reliable charging for your vessel's electrical system.
SAFETY RATED: This unit is SAE J1171 Certified (Ignition Protected), making it safe for use in marine gasoline engine compartments.
Key Features
✔ Includes single groove V-belt pulley
✔ Internal regulator & external fan
✔ 3-ear adjustable mounting configuration
✔ Marine-grade internal components
✔ Tachometer terminal output included
Technical Specs
Voltage:
12 Volts
Amperage:
55 Amps
Polarity:
Negative Ground
Mounting Foot:
1 Inch (25.4mm)
Pulley Type:
Single V-Groove
Regulator:
Internal (IR)
Compatibility / Fitment Guide
Make/System
Model/Application
Year Range
Crusader Marine
5.0L, 5.7L, 350ci Engines
1985 - 2004
Yamaha Marine
Various Inboard/Sterndrives
1980s - 1990s
Marine Power
GM-based Marine Engines
Various
Westerbeke
Diesel & Gasoline Gensets/Engines
Various
OEM Cross Reference
Crusader: 39200, 39049
Yamaha: 19-1400-10
Arco: 60075
Sierra: 18-6843
Mando: A000B0341, TA000B0341
Westerbeke: 39790
Motorola: 8MR2199K, 110-656
Quicksilver: 8M6007464
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 fitment and performance in marine environments.
How do I know if it is compatible?
We recommend checking the SKU/MPN and Cross Reference list provided above. This unit typically replaces Mando-style alternators found on Crusader engines with a 1-inch mounting foot.
Does it come with the pulley installed?
Yes, this alternator comes complete with a pre-installed single-groove V-belt pulley, ready for installation on your belt drive system.
Note: Please verify your original part number against the references above before purchasing. Distributed by 4Drive / Aftermarket.
