Honda 250HP BF250DUCDA iST Outboard – 30″ Shaft
With 250 horsepower, iST control, and a 30-inch shaft, the Honda BF250DUCDA supports compatible high-transom installations. Electronic commands assist precise operation, while the shaft length helps maintain effective propeller depth and thrust transfer.
Description
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Honda 250HP BF250DUCDA iST Outboard Motor Specs
| Brand | Honda Marine |
| Full Model Code / Part Number | BF250DUCDA (Counter Rotation / iST / 30" Shaft) |
| Country of Origin | Japan / USA |
| Engine Type & Configuration | 4-Stroke SOHC 60° V6 (24-Valve VTEC) |
| Horsepower Output (HP / kW) | 250 HP (184 kW) |
| Displacement (cc / cu in) | 3583 cc (219 cu in) |
| Bore x Stroke (mm / in) | 89.0 x 96.0 mm (3.50 x 3.78 in) |
| Maximum RPM Range (Full Throttle Operating Range) | 5300 - 6300 RPM |
| Fuel Induction System | Programmed Fuel Injection (PGM-FI) |
| Ignition System | Microcomputer Controlled Transistorized |
| Starting System | Electric Start with Intelligent Shift & Throttle (iST) |
| Steering System | Electronic Remote Control / iST Compatible |
| Trim & Tilt System | Power Trim & Tilt |
| Gear Ratio & Shift Mechanism | 2.00:1 (Counter Rotation / F-N-R) |
| Exhaust System | Through Prop Hub |
| Recommended Transom Shaft Length | XXL: 30 inches |
| Alternator / Charging Output (Amps / Watts) | 90 Amp (Total / 60 Amp Battery Charging) / 1080 Watts |
| Recommended Fuel Grade & Oil Type | Regular Unleaded (Min. 86 Octane) / Honda 4-Stroke FC-W 10W-30 |
| Dry Weight (kg / lbs) | 287 kg / 633 lbs |
| Standard Warranty | 5 Years Limited Pleasure Warranty |
Common Question of Honda BF250DUCDA
Does BF250DUCDA use iST?
Yes. The Honda BF250DUCDA is specified with Intelligent Shift and Throttle and a 30-inch shaft. Its 250-horsepower four-stroke powerhead uses an electronic fuel injection system, supporting a high performance outboard motor installation when the boat has compatible electronic controls, harnesses, gauges, battery capacity, steering, and a matching tall transom.
What boats need a 30-inch shaft?
Boats with a matching 30-inch transom are the intended application for this UCDA model. Measure the hull carefully before purchase and follow the boat manufacturer’s recommendation. Correct shaft positioning supports cooling-water pickup, gearcase depth, propeller immersion, steering response, and trim. Accurate measurement is required for this ready to bolt marine outboard.
Does it require electronic controls?
Yes. The iST system requires compatible electronic controls, wiring harnesses, gauges, battery capacity, steering equipment, and correct rigging. Conventional mechanical cables may not provide the intended engine interface. Confirm complete system compatibility before purchase so the Honda 250-horsepower four-stroke powerhead delivers dependable shift and throttle response.
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