Honda 140HP BF140AK1LRA 4-Stroke Outboard – 20″ Shaft
The 140-horsepower Honda BF140AK1LRA four-stroke outboard uses a 20-inch shaft for compatible lower-transom installations. Its propulsion output supports dependable cruising, while correct shaft matching helps maintain propeller depth and stable handling.
Description
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Honda 140HP BF140AK1LRA 4-Stroke Outboard Specs
| Brand | Honda Marine |
| Full Model Code / Part Number | BF140AK1LRA (Standard Rotation / Mechanical / 20" Shaft) |
| Country of Origin | Japan / USA |
| Engine Type & Configuration | 4-Stroke DOHC 16-Valve Inline 4 (VTEC) |
| Horsepower Output (HP / kW) | 140 HP (103 kW) |
| Displacement (cc / cu in) | 2354 cc (144 cu in) |
| Bore x Stroke (mm / in) | 87.0 x 99.0 mm (3.43 x 3.90 in) |
| Maximum RPM Range (Full Throttle Operating Range) | 5000 - 6000 RPM |
| Fuel Induction System | Programmed Fuel Injection (PGM-FI) |
| Ignition System | Microcomputer Controlled Transistorized |
| Starting System | Electric Start |
| Steering System | Remote Mechanical Steering Compatible |
| Trim & Tilt System | Power Trim & Tilt |
| Gear Ratio & Shift Mechanism | 2.14:1 (Standard Rotation / F-N-R) |
| Exhaust System | Through Prop Hub |
| Recommended Transom Shaft Length | L: 20 inches |
| Alternator / Charging Output (Amps / Watts) | 40 Amp (Total / 30 Amp Battery Charging) / 480 Watts |
| Recommended Fuel Grade & Oil Type | Regular Unleaded (Min. 86 Octane) / Honda 4-Stroke FC-W 10W-30 |
| Dry Weight (kg / lbs) | 215 kg / 474 lbs |
| Standard Warranty | 5 Years Limited Pleasure Warranty |
Common Question of Honda BF140AK1LRA
Is BF140AK1LRA fuel injected?
Yes. This Honda 140-horsepower four-stroke uses an electronic fuel injection system for controlled fuel delivery during starting, acceleration, and cruising. The listed configuration includes remote mechanical controls, electric start, and a 20-inch shaft, creating a high performance outboard motor for compatible recreational and utility boats.
What shaft length does it use?
The BF140AK1LRA uses a 20-inch shaft. It is intended for boats with a matching 20-inch transom, subject to the hull manufacturer’s measurement. Correct shaft length helps maintain cooling-water pickup, gearcase position, propeller immersion, steering behavior, and engine efficiency after fitting this ready to bolt marine outboard.
Are remote controls mechanical?
Yes. Remote mechanical controls are specified, along with electric start. Shift and throttle cables connect the helm control box to the engine, providing conventional operation. Check cable routing, control-box compatibility, steering hardware, battery connections, and transom strength before installation to ensure the Honda four-stroke powerhead is properly rigged.
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