Suzuki DF140 ATL

The DF140 ATL is a four-stroke, 4-cylinder outboard motor with electronic fuel injection and a DOHC 16-valve design for efficient and reliable power delivery.

“ATL” is part of Suzuki’s model designation for certain variants of the DF140 series, typically indicating a specific shaft length and rotation option (e.g., standard or counter-rotation) — useful when matching twin engines to a boat.

It delivers 140 horsepower for boats that need strong performance in mid-size applications.

The engine uses multi-point sequential electronic fuel injection, which improves fuel economy, reduces emissions, and provides smooth throttle response.

Suzuki recommends regular unleaded gasoline (minimum 87 octane), providing a good balance of performance and cost.

The engine has a 2,044 cc (2.0 L) displacement with an 86 mm × 88 mm bore and stroke, giving ample torque and smooth operation for its class.

20″ (Standard / L) 25″ (Extra Long / X) Both help fit different transom heights on boats.

Yes — it features electric start and power trim & tilt, so you can easily adjust throttle and angle for optimizing performance and efficiency on the water.

The ideal wide-open throttle range is about 5,600 – 6,200 rpm, where the engine performs most efficiently.

Weight varies by shaft length but is typically around 179–184 kg (395–406 lb) for standard and extra long shaft models.

It uses a 2.59 : 1 gear ratio, optimized for strong mid-range thrust and acceleration.

Yes — the DF140 ATL is suitable for both freshwater and saltwater boating. However, it’s recommended to flush with fresh water after saltwater use to reduce corrosion and prolong engine life.

Yes — thanks to the EFI and modern engine design, it delivers good fuel efficiency across a wide range of boat speeds, specially at cruising rpm.

Engine oil & filter changes Lower unit gear oil replacement Water pump/impeller inspection Fuel system cleaning/checks Following Suzuki’s recommended service intervals extends engine life and reliability.

Suzuki four-stroke engines are known for solid reliability and durability, with proven technology in the DF series. Some owners report long engine life with proper maintenance and care.

Center console fishing boats Pontoon boats Deck boats Small cruisers Generally boats 16 – 24 ft in length.