AT-DF-165-K6-KITXT-Series Alternators
For WakeBoat and Inboard Gas Applications

  • 170A in a Small Case Package
  • Up to 110A at Idle Speeds
  • Ideal for High Electrical Load Vessels
  • Custom High Speed Bearings for Long Life
  • Dual Fan Cooling, High Airflow Frame
  • USCG Title 33, ISO 8846 and SAE J1171 Certified

The New XT-Series Alternators from Balmar bring together the latest innovations in alternator design to deliver incredible charging power in a compact, Marine-friendly package.

Advanced Hairpin StatorNew XT-Series Alternator family features a state-of-the-art, braided wire stator design to generate exceptional output in the smallest possible area. The XT-Series stator achieves an industry-best 85% copper windings density, compared to 70% density for hairpin stator windings and 45% density for traditional s-wound stators. This design achievement results in a more efficient alternator which provides more power at low RPM, higher overall power and cooler operation.

Available XT-Series mounting styles are drop-in compatible for WakeBoat and other GM gasoline engine applications and include both 2“ Single Foot (Delco 11Si Style) and Vortec (Delco 9Si Style) designs.

Over 60% of WakeBoat run times are at idle speed. Many high current electrical loads are engaged at idle, including ballast pumps, high-output stereo systems and multiple instrumentation loads. Standard alternators only produce about 30A-40A at idle speed, leaving these loads to be serviced by onboard batteries. Excessive draining causes battery sulfation and reduced lifetimes. Dealers report that AGM batteries which should last 5-7 years on these vessels are being replaced annually. The XT-Series Alternator produces over 100A at idle speed – ample power to service all electrical loads with power left over to top-off house batteries. The XT-Series pays for itself in reduced battery replacement costs in just one year!


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Part Number(1)



170 A    5.2 HP          1-2″ Single Foot (11Si Typical)                XT-SF-170-IR            

         K6 (2.4″ dia)        

    Vortec (9Si Typical)          XT-VT-170-IR       

(1) These Alternators contain single stage, internal regulators and are not appropriate for use with Balmar’s multi-stage external regulators. Contact Balmar Tech Service at +1-360-435-6100 for more details.