Alternator Fits for Mercruiser

Alternator – Fits MerCruiser Collection

Power your boat with confidence and precision. This collection offers alternators designed specifically for MerCruiser marine engines—helping you maintain consistent electrical performance under wet, salt-laden conditions.

What Makes This Collection a Solid Choice

• Wide Engine & Application Coverage
  Includes alternators for MerCruiser inboard and stern-drive engines ranging from 2.5L four-cylinders up to robust 8.2L V8 models. Match options are available for popular engines like 4.3L, 5.0L, 5.7L, 6.2L, 7.4L, and 8.2L across ski, sterndrive, and Alpha Bravo configurations.

• Amp Ratings for Varying Power Demands
  Options span from standard 55 A units suitable for entry-level setups, up to high-output 105 A models essential for modern systems with lighting, electronics, and multiple battery banks. A 55 A alternator covers early MerCruiser 4.3–5.7 L engines, while 105 A replacements—e.g., for part number 862031T—are ideal for later high-demand applications.

• Engineered for Marine Environments
  These alternators feature internal regulators and fans (IR/IF design) and external fans where needed, ensuring reliable operation in marine conditions. Select models include serpentine pulley configurations to match your engine layout.

• Easy Cross-Referencing by Engine or Part
  Listings include common MerCruiser identifiers like 862031T for high-output replacements, as well as recognized Delco or Mercury part numbers—making it straightforward to find the correct match.