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.
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.
XT-170 and XT-250 Alternators produce over 120A and 180A, respectively 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!
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.
For Wakeboat and Inboard Gas Applications
- 170A & 250A in a Small Case Package
- Up to 180A 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

XT-Series Output | Power Take Off | Mounting | Alternator Part Number(1) | Standard Pulley |
---|---|---|---|---|
170 A | 5.2 HP | 1-2" Single Foot (Case Grd) | XT-SF-170-IR | K6 (2.4" dia.) |
1-2" Single Foot (Iso Grd) | XT-SF-170-IR-IG | |||
Vortec (Case Grd) | XT-VT-170-IR | |||
Vortec (Iso Grd) | XT-VT-170-IR-IG | |||
250A | 6.0 HP | Vortec (Case Grd) | XT-SF-250-IR | |
Vortec (Case Grd) | XT-VT-250-IR |