When it comes to maintaining peak performance and reliability for your Mercury 2-stroke outboard motor, this replacement alternator is the perfect solution. Designed for seamless compatibility with a wide range of Mercury powerhead models, this alternator ensures consistent power delivery for your marine engine’s electrical system. Engineered to meet or exceed OEM specifications, it is built to handle the rigorous demands of high-performance boating.
 
Broad Compatibility Across Mercury 1.5,  3.0 and 3.2 Liter 2-Stroke Motors:
 
This alternator is specifically designed to fit an extensive lineup of Mercury 2-stroke outboard powerheads, including some of the most popular models in the boating world:
 
Pro XS: Ensures reliable power for one of Mercury’s most sought-after high-performance outboards.
 
DTS (Digital Throttle & Shift): Designed to provide seamless electrical support for outboards equipped with digital throttle and shift technology.
 
DFI (Direct Fuel Injection): Perfectly compatible with Mercury’s DFI engines, delivering consistent power for smooth operation.
 
JP & Jet Drive: Built to handle the unique demands of Mercury Jet Drive outboards, ensuring optimal performance in shallow water environments.
 
Sport XS: Designed for the rigorous demands of the Sport XS series, providing dependable power during high-speed operation.
 
300X and 300XS: Fully compatible with Mercury’s legendary high-performance racing engines, offering consistent electrical output even under extreme conditions.
 
3.2L Liter Stroker: Tailored for Mercury V6 3.2L high-displacement Opti engines, ensuring long-lasting reliability and smooth operation.
 
1.5L Liter 3-Cylinder: Fits Mercury inline 3-cylinder 75, 80, 90, 115 HP Optimax engines, ensuring long-lasting reliability  operation.
 
Premium Features for Reliable Performance
 
This alternator is more than just a replacement—it's an upgrade. It delivers consistent, reliable power with features that make it ideal for marine applications. With a 12V 50-amp output, it’s equipped to handle the high electrical demands of Mercury outboards.
 
The multi-groove serpentine pulley ensures smooth and efficient operation, while the internal fan design provides excellent cooling to maintain performance and durability. Additionally, it’s ignition-protected (SAE J1171 certified), ensuring safe operation in all marine environments.
 
Durability Built for Marine Conditions
 
Marine environments are tough on electrical components, but this alternator is built to last. It resists corrosion, wear, and extreme temperatures, making it a reliable choice for saltwater and freshwater use. Whether you’re navigating open waters or pushing your engine to its limits during a race, this alternator is designed to perform flawlessly.
 
 
This alternator is a direct replacement for several Mercury and Delco part numbers, including 881247A1, 875286A1, 889956, 8M0064020, 19020704, and 19020707. It is also compatible with aftermarket options such as Arco #20850 and Sierra #18-6455. The installation process is straightforward, making it an easy upgrade or replacement for your existing alternator.
 
This replacement alternator is tailored to meet the demands of Mercury’s 2-stroke powerheads, from recreational boating to high-speed racing applications. Whether you’re running a Pro XS, DTS, JP, DFI, Jet Drive, Sport XS, 300X, 300XS Opti (3.2 Liter Stroker), this alternator provides the reliable power you need to keep your marine engine and electrical systems running at their best.
 
Upgrade your Mercury outboard engine with a high-performance alternator designed for durability, efficiency, and compatibility. With its rugged construction and ability to fit a wide range of Mercury 2-stroke powerheads, this alternator is the ideal choice for both casual boaters and performance enthusiasts.