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Suzuki engineers based the DF50A and DF40A engine on Suzuki's proven in-line three-cylinder 12-valve engine. This high performance engine has a displacement of 941cm3 and features a DOHC powerhead—the only DOHC engine used in the 36.8kW (50PS)/29.4kW (40PS) outboard class—with four valves per cylinder, and an air intake system optimized for maximum efficiency in the high rpm range.When designing this engine, Suzuki engineers also focused on improving mechanical efficiency. Each component was analyzed and redesigned to reduce mechanical loss in order to improve efficiency. As an example, a new oil pump design makes internal oil flow more efficient, keeping moving parts better lubricated while using less energy. The combined reduction in mechanical loss throughout the engine contributes to better fuel economy.
Ships via XPO freight — curbside delivery only.
available for $99 if needed.
Free shipping applies only to portable outboard motors (lower 48 states).
30-day return window for manufacturer-verified defects. All other sales final.
Accepted payment methods:
| Horsepower | 40 HP |
|---|---|
| Brand | Suzuki |
| Model | DF40ATLW4 |
| Type | Outboard Motor |
| Power Category | Mid Range |
| Condition | New |
| Displacement | 57.4 cu.in. |
| Engine Type | 3 cylinders, DOHC 12-Valve |
| Starting Method | Electric |
| Weight | 229 lb. lbs |
| Shaft Length | 20" |
| Power Trim & Tilt | Power Trim and Tilt |
| Controls | Remote |