Balmar Alternator 170 Amp, 12V Single Foot Internal Regulator K6 Pulley

The Balmar Alternator 170 Amp, 12V Single Foot Internal Regulator with K6 Pulley (XT-SF-170-IR) is a high-output charging unit engineered for marine and stationary engine applications demanding reliable DC power generation. This spindle-mount alternator delivers 170 amperes at 12 volts, making it suitable for vessels and equipment with substantial electrical loads—from battery charging to powering marine systems during engine operation.

The 170-amp output specification reflects the unit's capacity to sustain high charging rates under continuous operation, critical for offshore and extended-range applications where electrical demand exceeds typical auxiliary charging. Internal voltage regulation eliminates the need for external control modules, streamlining installation and reducing wiring complexity. The K6 serpentine pulley accepts standard V-belt drive configurations. Single-foot mounting provides mounting flexibility across engine platforms; the 1-inch Motorola-style configuration suits Westerbeke, Lehman, Hino, and Pathfinder engines, while the 2-inch Delco-style interface accommodates Volvo Penta, John Deere, Perkins, Mercruiser, Pleasurecraft, Crusader, Indmar, and other GM-based marine power plants. Case ground design simplifies electrical integration.

This alternator is purpose-built for commercial fishing vessels, expedition yachts, and stationary genset applications where extended operational cycles and high battery-bank draw are standard. The internal regulator automatically compensates for varying engine speeds, maintaining stable output voltage across idle to full-throttle conditions. Operators in saltwater and remote-site environments rely on this class of alternator for consistent power delivery without external regulator failure points.

Balmar alternators are recognized across marine and industrial sectors for sustained output reliability. The 170-amp XT series represents mid-to-high capacity in modern alternator lineups, bridging auxiliary charging and primary power generation roles. Verify mounting foot style and pulley compatibility with your specific engine block before ordering.