Honda BF140AXDA 140HP 25in in White iST Standard Rotation Outboard Motor

Description

Power offshore center consoles using the Honda BF140 White Outboard Motor BF140AXDA configuration finished in Grand Prix White for sports skiffs and offshore patrol craft. Displacing 2.4 liters across four inline cylinders, this power plant produces 140 brake horsepower at 5500 RPM. Intelligent Shift and Throttle drive-by-wire controls pair with a 25-inch shaft for responsive high-seas navigation.

Formed from corrosion-resistant marine aluminum alloy coated in multi-layer white enamel, this block features dual overhead camshafts activating 16 valves. Raw sea cooling incorporates sacrificial zinc anodes and dual freshwater flush ports. Fuel lines connect to a standard 3/8-inch hose barb, while electrical power flows from a high-output 55-amp alternator. Dry engine weight measures 489 lbs, clamped over a 25-inch transom with a 6.9-quart engine oil sump.

Key Features of Honda BF140AXDA

Custom boat builders buy Honda BF140AXDA outboard engine packages to gain digital fly-by-wire throttle control and heat-reflective white finish protection. The 2.4-liter platform generates strong low-end torque to lift loaded hulls onto plane with ease without stern squat.

• Multi-port programmed fuel injection meters fuel micro-charges to eliminate smoke during slow harbor trolling passes.
• VTEC variable valve timing refines BF140AXDA high-rpm power output across aggressive open ocean cruise speeds.
• High-flow rubber impeller raw pump circulates 22 gallons per minute through the powerhead cooling jacket.
• Heavy rubber shear mounts absorb engine vibration before reaching transom knees and aluminum hull plates.
• Spin-on engine oil filter allows clean filter swaps without spilling fluid into coastal waterways.
• Through-propeller underwater exhaust hub lowers outboard operating noise during passenger harbor transit runs.
• NMEA 2000 digital communication protocol exports engine metrics straight to multi-function helm chartplotters.

Torque Dynamics Marine Thermal Thresholds

Producing 165 lb-ft torque at 4,000 RPM, this VTEC-equipped four-stroke outboard accelerates loaded hulls onto plane in seconds. Operating coolant temperatures stay regulated between 140°F and 160°F under continuous cruising throttle. Programmed electronic fuel injection ensures uniform cylinder combustion pressure, preventing thermal fatigue on valves and piston crowns. Sea water heat rejection totals 5,200 BTU per minute at full rating. Cruising fuel consumption records at 0.370 lb per horsepower-hour, maximizing operating range between remote fuel dock stops.

Transom Stringer Rigging Installation Clearance

Mounting over standard transom stringer knees requires a minimum 2.0-inch clearance from the clamp bracket base. Exhaust discharges through the propeller hub meeting ABYC P-1 standards, with idle relief ports clearing dynamic waterline by 6 inches. Heavy elastomer motor mounts isolate steering torque while maintaining shaft depth on 25-inch transoms.

Shift Routine Scheduled Maintenance Protocol

Electronic drive-by-wire helm levers provide instant gear engagement when maneuvering around mooring buoys and shallow docks in gusty crosswinds. This four-stroke marine outboard is not engineered for non-stop continuous barge towing, untreated sand slurry dredging, or uncooled dry exhaust operation without raw sea water cooling.

• Inspect water pump telltale stream and check lower gearcase oil level each shift.
• Drain primary fuel water separator bowls and examine engine oil dipstick levels every 50 hours.
• Replace engine fuel filters and inspect external gearcase sacrificial zinc anodes every 250 hours.

Factory Crate Shipment Warranty Manifest

Honda covers this outboard with a True 5-Year non-declining recreational or 1-Year commercial factory limited warranty. The heavy cardboard export crate contains the complete outboard motor, four transom mounting bolts, an electronic helm wire harness, an owner manual, and an official factory technical service guide.