Balmar Alternator 3.15" Dual Foot Saddle J10 Serpentine Pulley Regulator & Temp Sensor - 170A Kit - 12V - XT-DF-170-J10-KIT
Manufacturer Part #: XT-DF-170-J10-KIT
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Balmar Alternator Kit 170 Amp 12V Dual Foot Saddle Mount with J10 Pulley, Regulator & Temp Sensor – XT-DF-170-J10-KIT
The Balmar Alternator Kit – 170 Amp, 12 Volt (XT-DF-170-J10-KIT) is a complete high-output marine charging system engineered for vessels with heavy electrical demands and saddle-mount engine configurations. Featuring a 3.15” dual-foot saddle mount, J10 serpentine pulley, external smart voltage regulator, and temperature sensors, this kit delivers intelligent, efficient, and reliable charging performance for cruising, offshore, and performance boats.
Designed for continuous-duty marine operation, the 170-amp alternator provides strong charging output at cruising RPMs, ensuring dependable power for inverters, refrigeration, navigation electronics, lighting, and other onboard systems. The dual-foot saddle mount offers a secure, vibration-resistant fit on a wide range of marine engines commonly found on sailboats and powerboats.
The J10 serpentine pulley delivers increased belt contact area for maximum torque transfer, reduced slippage, and improved belt life—making it ideal for high-output alternator applications. The included smart external regulator supports advanced multi-stage charging profiles, optimizing performance and extending battery life for AGM, gel, and lithium battery banks (with proper configuration). Alternator and battery temperature sensors actively protect the charging system by automatically adjusting output to prevent overheating and overcharging.
Constructed with marine-grade, corrosion-resistant materials, Balmar alternators are trusted worldwide for their durability, thermal efficiency, and proven reliability in harsh saltwater environments.
Key Performance Features
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170 Amp XT-Series Alternator: Delivers unmatched power density in a "small case" frame, producing more power at lower RPMs than the competition.
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3.15" Dual Foot (Saddle) Mount: A precision-engineered "bolt-on" upgrade for Hitachi-style mounts common on Yanmar, Westerbeke, and Perkins diesel engines.
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J10 Serpentine Pulley: The 10-groove design ensures maximum torque transfer, essential for the high mechanical load of a 170A charging cycle.
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MC-618 Multi-Stage Regulator: This included "smart" regulator features 100% programmable profiles to safely charge and protect advanced battery chemistries.
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Dual Temp Sensors: Real-time monitoring of both the alternator and battery temperatures ensures the system automatically adjusts to prevent thermal damage.
Technical Specifications
| Feature | Details |
| Model Number | XT-DF-170-J10-KIT |
| Output / Voltage | 170 Amps / 12 Volts |
| Mounting Style | 3.15" Dual Foot (Saddle Mount) |
| Pulley Type | J10 Serpentine (10-Groove) |
| Regulation | External MC-618 (Included) |
| Grounding | Case Ground |
| Best For | Trawlers & Sailboats with Large Lithium Banks |
In The Box
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1 x Balmar XT-170 Alternator (3.15" Saddle Mount)
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1 x J10 Serpentine Pulley (Pre-installed)
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1 x MC-618 Multi-Stage Smart Regulator
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1 x Alternator Temperature Sensor (MC-TS-A)
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1 x Battery Temperature Sensor (MC-TS-B)
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Wiring Harness & Comprehensive Installation Manuals
The Balmar Alternator 3.15” Dual Foot Saddle J10 Serpentine Pulley Regulator & Temp Sensor – 170A Kit – 12V – XT-DF-170-J10-KIT is the ideal turnkey solution for boat owners seeking maximum charging power, intelligent system protection, and long-term Balmar reliability.
Balmar Alternator 3.15" Dual Foot Saddle J10 Serpentine Pulley Regulator & Temp Sensor - 170A Kit - 12V - XT-DF-170-J10-KIT is backordered and will ship as soon as it is back in stock.
Balmar Alternator 3.15" Dual Foot Saddle J10 Serpentine Pulley...
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