Tohatsu 140hp MFS140AETCUL Outboard Motor

The Tohatsu 140hp MFS140AETCUL Outboard Motor is a high-output EFI four-stroke engine designed specifically for twin-engine applications that require counter-rotation and maximum control. Featuring a 25” extra-long shaft and opposite-rotation lower unit, this model improves handling balance, reduces steering torque, and enhances overall maneuverability on offshore and commercial vessels.

Built with industry-first 4-2-1 Performance Tuned Exhaust technology and Simpliq™ SOHC-4V engine architecture, the MFS140AETCUL delivers exceptional low-end torque, smooth acceleration, and impressive fuel efficiency—often matching the real-world performance of heavier 150hp outboards without the added weight.

Features and Performance

• Counter-Rotation Gearcase: Optimized for twin-engine setups to improve tracking, balance, and control

• Electronic Fuel Injection (EFI): Provides quick starts, smooth throttle response, and consistent fuel efficiency

• 4-2-1 Performance Tuned Exhaust: Maximizes low-end torque and acceleration across the RPM range

• SOHC 4-Valve Engine Design: Enhances airflow and combustion efficiency

• Simpliq™ Technology: Central spark plug placement improves heat management and fuel economy

• Fine-Tuned ECU Programming: Delivers responsive throttle control and stable power output

• Built-In Freshwater Flushing System: Simplifies routine maintenance and extends engine life

• Ultra-Low Emissions: CARB 3-Star and EPA compliant

Why You Should Buy It

• Essential for twin-engine counter-rotating configurations

• Extra-long shaft ideal for offshore and deeper-transom boats

• Best-in-class torque with lighter engine weight

• Smooth, quiet four-stroke operation for long offshore runs

• Excellent alternative to heavier 150hp outboards

• Backed by a 5-year Tohatsu manufacturer warranty

FAQ – Tohatsu 140hp MFS140AETCUL Outboard Motor

Q: What does counter rotation mean on this model?
A: Counter rotation means the propeller spins opposite to a standard rotation engine, improving balance and control on twin-engine boats.

Q: What boats is this outboard best suited for?
A: It’s ideal for offshore boats, catamarans, and commercial vessels using dual-engine configurations with a 25” x-long shaft.

Q: How does this compare to the standard MFS140AETUL?
A: Performance is the same, but the AETCUL version includes counter-rotation for twin-engine balance.

Q: Does this model include power trim and tilt?
A: Yes, power trim and tilt are included as standard equipment.