Balmar 12V 170A XT Series Alternator, 4in Saddle Mount (No Pulley)

High-Output 12V 170A Alternator for Marine and Off-Grid Power Systems

The XT Series 170A 12V Alternator is engineered to meet the demanding electrical requirements of modern marine vessels and off-grid expedition vehicles. Featuring a robust 4-inch (approx. 101.6mm) dual foot saddle mount, this high-output alternator provides a substantial upgrade over standard factory units. It is specifically designed to support rapid recharging of large house battery banks, including deep-cycle AGM and Lithium (LiFePO4) systems, ensuring your essential onboard electronics and appliances remain powered.

Engineered for High-Output Charging

Standard automotive alternators often struggle and overheat when subjected to the continuous high-load demands of lithium battery banks or heavy inverter usage. The XT Series addresses this with a braided-stator design and a dual-fan, high-airflow frame. By upgrading to a dedicated high-amperage alternator, you significantly reduce engine run-time required to replenish depleted batteries, saving fuel and minimising engine wear during off-grid or marine operations.

Key Features and Benefits

• High 170A Output at 12V: Delivers substantial charging current to rapidly replenish large-capacity battery banks and run heavy DC loads simultaneously.
• 4in (Approx. 101.6mm) Dual Foot Mount: J-180 saddle mounting, which Balmar lists as typical for John Deere, Cummins and Caterpillar engines.
• Customisable Drive Setup (No Pulley Included): Supplied with a bare 17mm shaft, allowing you to fit the Dual V or multi-groove serpentine pulley required for your specific engine belt geometry.
• Thermal Resilience: Built to handle the elevated thermal stresses associated with charging low-internal-resistance batteries like LiFePO4 when paired with an appropriate external regulator.
• Reduced System Risk: Mitigates the risk of stator burnout and premature failure commonly experienced by stock alternators pushed beyond their duty cycle limits.

Important Configuration Notes and Exclusions

Please note that this unit is supplied without a pulley to allow for custom drive matching. Depending on your engine's belt configuration, compatible 17mm bore pulley options include:

• B-61-0020: Pulley, Dual V 2.7in (approx. 68.6mm) x 1/2in (approx. 12.7mm) DeepV, 17mm Bore
• B-61-0070: Pulley, K-6 2.45in (approx. 62.2mm) Serpentine 6-Rib, 17mm Bore
• B-1310: Pulley, K-8 2.4in (approx. 61mm) Serpentine 8-Rib, 17mm Bore, Short (STD)

Versatile Applications

Whether you are refitting a cruising yacht or building an overland truck, the XT Series 170A alternator delivers reliable, high-density power generation. Its 4-inch (approx. 101.6mm) J-180 dual foot mount suits engines and brackets designed for this mounting style; confirm fit and belt alignment before ordering.

Upgrade Your Charging Capacity

Configure your ideal engine-driven charging system by pairing the XT Series 170A 12V Alternator with the appropriate 17mm bore pulley for your vessel or vehicle today.