Small Case Alternators

NEW! 70-Series Alternators
Dual internally-fanned 70, 71, 712-Series alternators truly bridge the gap between gasoline and diesel marine engines by combining the high-output and superior low cut-in characteristics of our premium small case alternators with a sealed construction that meets international  ISO and SAE standards, as well as USCG standards for ignition protection. With an impressive top-end rotor speed of 12,000 r.p.m., this new alternator is an ideal choice for Mercruisers and other high-performance marine engines with cruising speeds meeting or exceeding 5000 r.p.m. Available in 1'' (71-Series), 2'' (712-Series) single-foot, and dual-foot (3.15"ID) saddle-style mounts.

80-Series Alternators
Available in 50, 65, or 100-amp outputs, 80-Series alternators are constructed to meet the specific demands of sport fishers, sport cruisers and trailerboats. All 80-Series alternators feature isolated grounds, sealed brushes and comply with USCG, SAE J1171, and ISO 8846 standards for gasoline or diesel engines. Available in 1'' (81-Series) or 2'' (812-Series) single-foot mounts.

90, 91 & 912-Series 12-Volt Small Case Alternators
True marine construction and an impressive output at lower engine RPMs consistent with diesel engines have made our small-case alternators favorites among recreational and commercial boaters. Available in 75, 100, and 150-amp single and dual outputs, these alternators feature heavy-duty internal components and durable powder-coat finishes for years of reliable offshore service. Three mounting styles: 1'' (91-Series), 2'' single-foot (912-Series), and 3.15'' (90-Series) dual-foot models are compatible with a wide range of marine engine types. Some specific applications, such as Perkins-Volvo, Lehman Sabre, and other engines using some Lucas-type alternators may require the use of our 901-Series alternators with an offset tensioning arm (see dimensional drawings and curves under 90-Series Alternators).

90, 91 & 912-Series 24-Volt Small Case Alternators
Small case, 24-volt alternators provide an excellent high-output replacement or upgrade for 24-volt charging systems. Available in 65- and 80-amp single and dual outputs, these alternators feature heavy-duty internal components and durable powder-coat finishes for years of reliable offshore service. Three mounting styles: 1'' (91-24 Series), 2'' single-foot (912-24 Series), and 3.15'' (90-24 Series) dual-foot models are compatible with a wide range of marine engine types. Dimensions are identical to their 12-volt counterparts (see dimensions of 90, 91, and 912-Series alternators for measurements). All models are available in case ground or isolated ground configurations. Follow the buttons below to view 24-volt power curves.