

Balmar XT-CR alternator – 12V – 170/250A
£798.43 – £987.61Price range: £798.43 through £987.61 Ex VAT
- Volts: 12V
- Amps: 170 and 250A
- Case Ground
- 3.15″ Dual foot ‘Hitachi style’
- Designed for Yanmar Common Rail engines (post 2013)
- SmartReady Internal Regulator: 14.1V
- Can be used with Balmar Smart Regulator MC-618
- Description
- Brand
- Video - XT series on a 'wake boat' engine.
The Balmar XT-CR series is specifically designed to fit Yanmar Common Rail engines (post-2013). This series combines Balmar’s latest innovations in alternator design to deliver industry-leading output in a compact, durable package.
Product Description
- Exceptional Power in a Compact Frame: The Balmar XT-CR (Common Rail) Series features a state-of-the-art braided stator wire design. This technology allows the alternator to generate significantly more power in a smaller footprint compared to traditional designs. It is specifically designed to produce superior charging current at low engine RPMs, making it ideal for cruisers who spend time at anchor or maneuvering at low speeds.
- Engineered for Efficiency and Cool Running: The XT-Series is built to operate 5°C to 10°C cooler than previous high-output models. This thermal efficiency ensures consistent performance even in hot engine rooms and extends the lifespan of the alternator’s internal components.
- SmartReady® Technology: For added peace of mind, the XT-CR comes equipped with Balmar’s SmartReady® internal regulator. This provides a reliable 14.1V backup charging source. If your external regulator ever fails, you can simply switch to the internal regulator to keep your batteries charging and your journey on track.
Key Features
- High Output at Idle: Delivers exceptional charging power (up to 128A for the 170A model and 186A for the 250A model) at low engine speeds.
- Yanmar Optimized: Specifically designed for the 3.15″ (80mm) saddle mount (Hitachi style) found on modern Yanmar engines.
Braided Wire Stator: Maximizes copper density for peak efficiency. - External Regulation Recommended: Designed to work seamlessly with the Balmar MC-618 digital regulator for multi-stage “smart” charging.
Technical Specifications
- Voltage: 12V
- Amperage Options: 170A or 250A
- Mounting: 3.15″ Dual Foot (Saddle Mount)
- Compatibility: Yanmar Common Rail engines (post-2013)
- Internal 14.1V Backup Regulator
- Case Ground
- Pulley Requirements: Requires a Multi-Groove Serpentine belt configuration (K6/J10).
Note for Installation:
- Due to the high output of these alternators, they should only be used with high-quality serpentine belt conversion kits.
- A Tachometer Signal Stabilizer (Part No. 15-TSS) may be required if your current tachometer is not adjustable.
Country of Manufacture:
USA
Brand
Balmar High-Output Alternators for Wake Boats

