90-Series 75, 100 & 150-Amp Alternators
High-output 90-Series alternators provide an exceptional opportunity to increase charging capacity while ensuring the superior dependability of marine-grade construction. Saddle mounting is perfect for use with engines equipped with import-style mounts. See our Alternator Mounting Guide for specific models which require dual-foot saddle mounts. 90-Series alternators feature oversize bearings, precision-wound rotors, and corrosion-resistant powdercoat finishes for long-lasting performance in the marine environment. See our Year 2000 Price List for alternator pricing.

Model 90-75 & 90-75-D Alternators
Ideal for use on smaller engines or in applications where amperage is maximized at lower engine rpm, Model 90-75 and dual-output Model 90-75-D alternators provide admirable amperage output with minimal horsepower load. These 75-amp models are recommended for engines equipped with 3/8" drive belts, and are ideally suited to battery loads in the 200-400 amp-hour range.
Model 90-100 & 90-100-D Alternators
Mid-power, 100-amp alternators in single and dual-output configurations, are the ideal choice for engines driven by a single 1/2" belt. Well suited for battery loads in the 400-600 amp-hour range, Model 90-100 and 90-100-D alternators deliver a solid performance curve across a wide range of engine speeds.
Model 90-150 & 90-150-D Alternators
High-output 150-amp alternators in single and dual-output configurations, provide exceptional amperage capacity  for charging systems driven by dual 1/2" belts. Well suited for battery loads in the 600-800 amp-hour range, Model 90-150 and 90-150-D alternators extend charging capabilities for vessels equipped with inverters, power hungry electronics and heavy-load load requirements such as refrigeration, air conditioning and power windlasses.

Model	DC Volts	Max Amps	Min. Belt	Output #	Product Notes
90-75 90-75-IG	12	90	3/8" Single	Single	IG (Isolated Ground)
90-75-D	12	90	3/8" Single	Dual
90-100 90-100-IG	12	115	1/2" Single	Single	IG (Isolated Ground)
90-100-D	12	115	1/2" Single	Dual
90-150 90-150-IG	12	135	1/2" Dual	Single	IG (Isolated Ground)
90-150-D	12	135	1/2" Dual	Dual

Model 901 Series Alternators
Available in both 75-amp and 100-amp models, the 901 Series is designed specifically for engines -- such as the Lehman Sabre, Lucas, and Perkins Volvo M Series -- which require a 60° offset on the alternator's tensioning leg. 901-Series alternators also feature isolated grounding for installations requiring a non-grounded case.