The Honda BF40 and BF50 XL (Extra Long) lower unit assembly has the following specifications:
Shaft Length: 25 inches (635 mm)
Gear Ratio: 2.08:1 (or 2.09:1 in some earlier models)
Gear Shift: F-N-R (Forward-Neutral-Reverse)
Exhaust: Through Prop
Propeller: Optional (not included with the assembly)
Key Details
The XL shaft version of the complete outboard engine typically has a dry weight of around 212-223 lbs (96-101 kg), though the lower unit assembly alone would be less.
The lower unit for both BF40 and BF50 models is generally the same due to shared engine block and design.
Newer models feature Programmed Fuel Injection (PGM-FI), while older models (pre-2007) may be carbureted; the lower unit assembly itself is compatible across these versions within certain date ranges (e.g., 1997-2007 and later).
The Garmin Reactor 40 Steer-By-Wire Corepack with a GHC 20 display is an advanced autopilot system for boats with compatible steer-by-wire steering. It includes a solid-state 9-axis AHRS for accurate heading, various control features like heading hold and tack/jibe, and full integration with compatible Garmin chartplotters for control from anywhere on the vessel. The corepack comes with a GHC 20 control unit, a 4″ color display for easy viewing, and the necessary components for installation.
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