Before you invest in a high-output charging system, save yourself a lot of trouble and money by ensuring that you buy the correct system for your application. Charging systems vary by type of boat, and a long list of other variables including engine type, engine room space, belt type and size, battery bank size and battery chemistry.
The 3 alternator models shown in this section all have the 2" Single Foot (Spindle) mounting style as shown in the photo.
Typical for Perkins, John Deere, Volvo Penta (Gas & Diesel), Mercruiser, Pleasurecraft, Crusader, Indmar, Marine Power & other GM-based Engines
The 3 alternator models shown in this section all have the 3.15" Dual Foot (Saddle) mounting style as shown in the photo.
Typical for Yanmar Engines