Suzuki Marine DF40ATL4 2025

Outperform The Competition.

Engineered to deliver fuel-efficient operation in a compact and lightweight design, the DF50A is a product of Suzuki’s product pioneering over the last decade. This three-cylinder engine, with a four valve DOHC design, is combined with Suzuki’s Lean Burn Control System to deliver high-tech performance with top level fuel economy. New DF50A models also sport the Suzuki Troll Mode System. The Boating Writers of America presented Suzuki Marine with the NMMA Innovation Award for the DF50A/DF40A, during the 2011 Miami Boat Show.

Features

Keep The Lights On: The DF40A hosts a 19A alternator that generates approximately 11.5A, perfect for powering your vessel, even when the engine is running as low as 1,000 rpm. Under normal circumstances, that’s enough to power all of your personal electronics comfortably without concern.
Built For Decades, Not Just Weekends: Suzuki’s motors come equipped with an anti-corrosion finish, which bonds tightly to the motor, protecting it from constant exposure to salt water. Keep your motor in out-of-the-box shape much longer than the competition.

Specifications

Recommended Transom Height: 20 in.
Starting System: Electric
Weight: 229 lbs
Engine Type: DOHC 12-Valve
Fuel Delivery System: Multi Point Sequential Electronic Fuel Injection
Number of Cylinders: 3
Piston Displacement: 57.4 cu. in. (941 cc)
Bore x Stroke: 2.85 x 2.99 in. (72.5 x 76 mm)
Maximum Output: 40 HP
Operating Range: 5300 - 6300 RPM
Steering: Remote (Tiller Kit Optional)
Oil Pan Capacity: 2.9 qt. (2.7 L)
Ignition System: Solid State Direct Ignition
Alternator: 12V 19A
Trim Position: Power Trim and Tilt
Gear Ratio: 2.27:1
Standard Propeller: Optional See Dealer; Propeller Selection: 9 - 17
Body Color: Black Engine Type: In-Line
Bore x Stroke: Bore: 2.85 in. (72.5 mm); Stroke: 2.99 in. (76 mm)
Displacement: 57.4 cu. in. (941 cc)
Starting: Electric
Trim Method: Power
Propshaft Horsepower: 40 bhp; 29.8 kW
Fuel Induction: Fuel Injected
Alternator: 19
Cooling: Water (Open Loop)
Steering: Remote

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