DF40A Suzuki Outboard Motor Suzuki Outboard Motors

Availability & Pricing:

DF40ATL520″*On Order
DF40ATLW520″*On Order

W = Cool White

2023 DF40A Outboard Motor

The DF40A is the only engine in the 40 HP class to offer DOHC performance, and also the only to incorporate a maintenance-free, oil-bathed timing chain, which provides the outboard with improved durability and maintenance-free operation. With larger displacements for increased power and performance, Suzuki’s Lean Control System improves fuel economy with designs that are more compact and lighter in weight than their predecessors. The new DF40A engines also include the Suzuki Troll Mode System. The Boating Writers of America presented Suzuki Marine with the NMMA Innovation Award for the DF40A/DF50A, during the 2011 Miami Boat Show.

Glide into your favorite honeyhole with Suzuki’s Troll Mode System. The engine’s revs can be adjusted in 50 rpm intervals, giving you precise control pressing the Troll Mode control switch from idle up to 1200 rpm, allowing you control over your wake and speeds.

The DF40A comes equipped with digital sequential electronic fuel injection, meaning it reads the electronic control unit monitors throttle setting, engine RPM, cylinder wall and air-intake temperature and atmospheric pressure all at once. All of these considerations cause the fuel injection to enter the combustion chamber at the most optimal opportunity, offering smoother and faster acceleration, crisp throttle response and reliable starting no matter what the conditions or temperature are.

Body ColorPearl Nebular Black or Cool White
Recommended Transom HeightL: 20″
Starting SystemElectric
Engine TypeDOHC 12-Valve
Fuel Delivery SystemMSE Fuel Injection
Number of Cylinders3
Piston Displacement Inches (CC) 57.4 (941)
Bore X Stroke Inches (MM)2.85 x 2.99 (72.5 x 76)
Maximum Output40 Horsepower
Operating Range (RPM)5000-6000
Oil Pan Capacity Quarts (Liter)2.9 (2.7)
Ignition SystemSolid State Direct Ignition
Alternator12V 19A
Trim PositionPower Trim and Tilt
Gear Ratio2.27:1
Standard PropellerOptional
Propeller Selection9-17
EngineDOHC 12-Valve
Piston Disp.57.4
Bore X Stroke2.85 X 2.99
Max HP40
RPM Range5000-6000
Oil Capacity2.9Qt.
IgnitionSolid State Direct
Alternator12V 19A
TrimPower Trim & Tilt
Gear Ratio2.27:1
Weight (lbs)L:229