Garmin Class B Compact v2 Drive Unirt

Unlock Effortless Control on the Water

Imagine gliding through open waters on your sailboat without the constant tug on the wheel. The Garmin Class B Compact v2 Drive Unit transforms your sailing experience by pairing seamlessly with the Reactor 40 Mechanical/Retrofit/Solenoid Corepack. Engineered for sailboats displacing up to 48,400 lbs, this drive unit delivers powerful, precise hydraulic steering that handles rough seas and long passages with ease. Sailors trust it for its compact design that fits tight spaces while packing serious thrust—perfect for cruisers, racers, and bluewater adventurers who demand reliability.

Key Features That Set It Apart

• Integrated Hydraulic Linear Drive: Provides smooth, responsive movement with a 10-inch stroke length, ideal for maintaining course in varying wind conditions.
• Impressive Thrust Power: Up to 1,610 lbs (730 kg) ensures it tackles heavy loads and turbulent waters without faltering.
• Compact Footprint: Measures just 31.9 x 4.6 x 8.9 inches (810 x 120 x 225 mm), making it a smart choice for retrofits on mid-to-large sailboats.
• Wide Operating Range: Functions reliably from -15°C to 50°C, standing up to coastal chills and tropical heat.
• Efficient Power Draw: Optimized for 10V to 30V systems, with low average currents (1 Amp clutch, 2-4 Amps motor at 12V) to preserve battery life on extended voyages.

Detailed Technical Specifications

Perfect Match for Reactor 40 Systems

This drive unit shines when integrated into Garmin's Reactor autopilot ecosystem. It syncs effortlessly with the Corepack to enable autopilot modes that adapt to your boat's motion, using advanced sensors for heading hold, wind vane steering, and route following. Whether you're tweaking sails on a tack or relaxing during a night watch, it keeps your vessel on track, reducing skipper fatigue and boosting safety.

Installation Insights from Seasoned Sailors

Mounting this unit requires careful alignment with your boat's tiller or quadrant, but its compact size simplifies the process. Secure it in a dry, accessible spot near the steering gear, connect to the ECU for regulated power, and calibrate via the Garmin app. Pro tip: Check hydraulic fluid levels regularly and bleed the system after install to avoid air pockets that could sap performance. Many owners report setup in a weekend with basic tools, unlocking autopilot freedom sooner.

Long-Term Performance and Care

Built tough for marine environments, this drive unit resists corrosion and wears slowly with proper upkeep. Rinse with fresh water after saltwater exposure, inspect seals annually, and monitor current draws for early issue detection. Sailors rave about its quiet operation and consistent thrust, even in 30-knot winds—making it a staple for offshore passages where every system counts.

Frequently Asked Questions