DF40A Suzuki Outboard Motor Suzuki Outboard Motors

Availability & Pricing:

Type Shaft Price
DF40ATL5 20″ *On Order
DF40ATLW5 20″ $5,675

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.

Model DF40A
Body Color Pearl Nebular Black or Cool White
Recommended Transom Height L: 20″
Starting System Electric
Choke N/A
Engine Type DOHC 12-Valve
Fuel Delivery System MSE Fuel Injection
Number of Cylinders 3
Piston Displacement Inches (CC)  57.4 (941)
Bore X Stroke Inches (MM) 2.85 x 2.99 (72.5 x 76)
Maximum Output 40 Horsepower
Operating Range (RPM) 5000-6000
Steering Remote
Oil Pan Capacity Quarts (Liter) 2.9 (2.7)
Ignition System Solid State Direct Ignition
Alternator 12V 19A
Trim Position Power Trim and Tilt
Gear Ratio 2.27:1
Standard Propeller Optional
Propeller Selection 9-17
Specifications DF40A
Starter Electric
Engine DOHC 12-Valve
Cylinders 3
Piston Disp. 57.4
Bore X Stroke 2.85 X 2.99
Max HP 40
RPM Range 5000-6000
Oil Capacity 2.9Qt.
Ignition Solid State Direct
Alternator 12V 19A
Trim Power Trim & Tilt
Gear Ratio 2.27:1
Propeller 9-17″
Weight (lbs) L:229