Balmar Alternator 3.15" Dual Foot Saddle K6 Serpentine Pulley Regulator & Temp Sensor - 170A Kit - 12V - XT-DF-170-K6-KIT
Manufacturer Part #: XT-DF-170-K6-KIT
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Balmar Alternator Kit 170 Amp 12V Dual Foot Saddle Mount with K6 Pulley, Regulator & Temp Sensor – XT-DF-170-K6-KIT
The Balmar Alternator Kit – 170 Amp, 12 Volt (XT-DF-170-K6-KIT) is a complete high-output marine charging system engineered for boats with heavy electrical demands and saddle-mount engine configurations. Featuring a 3.15” dual-foot saddle mount, K6 serpentine pulley, external smart voltage regulator, and temperature sensors, this kit delivers intelligent, efficient, and reliable charging for cruising, offshore, and performance vessels.
Designed for continuous-duty marine operation, the 170-amp alternator provides strong charging performance 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 K6 serpentine pulley delivers superior belt traction, reduced slippage, and smoother, quieter operation compared to traditional V-belt systems—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.
Built with marine-grade, corrosion-resistant materials, Balmar alternators are trusted by professional installers and long-range cruisers 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: Industry-leading power density in a small-case frame, delivering high output even at low cruising RPMs.
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3.15" Dual Foot (Saddle) Mount: Designed for precision fitment on Hitachi-style engine brackets common on many marine diesels.
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K6 Serpentine Pulley: Pre-installed 6-groove pulley provides the necessary surface area to transfer high-amperage loads without belt slip.
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MC-618 Multi-Stage Regulator: The industry's most advanced regulator, featuring specific charging profiles for Lithium, AGM, and Gel batteries.
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Dual Temp Sensors: Includes dedicated sensors for both the alternator and the battery bank, allowing the regulator to adjust output based on real-time thermal data.
Technical Specifications
| Feature | Details |
| Model Number | XT-DF-170-K6-KIT |
| Output / Voltage | 170 Amps / 12 Volts |
| Mounting Style | 3.15" Dual Foot (Saddle Mount) |
| Pulley Type | K6 Serpentine (6-Groove) |
| Grounding | Case Ground |
| Regulation | External MC-618 (Included) |
| Best For | Lithium Conversions & Large AGM House Banks |
In The Box
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1 x Balmar XT-170 Alternator (3.15" Saddle Mount)
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1 x K6 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 and comprehensive installation manuals
The Balmar Alternator 3.15” Dual Foot Saddle K6 Serpentine Pulley Regulator & Temp Sensor – 170A Kit – 12V – XT-DF-170-K6-KIT is the ideal turnkey solution for boat owners seeking maximum charging output, intelligent system protection, and long-term Balmar reliability.
Balmar Alternator 3.15" Dual Foot Saddle K6 Serpentine Pulley Regulator & Temp Sensor - 170A Kit - 12V - XT-DF-170-K6-KIT is backordered and will ship as soon as it is back in stock.
Balmar Alternator 3.15" Dual Foot Saddle K6 Serpentine Pulley ...
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