2024 Suzuki DF175APL 175hp Long Shaft 4 Stroke Outboard

2024 Suzuki DF175APL 175hp Long Shaft 4 Stroke Outboard

The new Suzuki DF175APL 175hp Long Shaft is based on an inline four-cylinder DOHC powerhead with a 2,867cm³ (174.9 cu.in.) displacement. While the large displacement contributes greatly to producing exceptional acceleration and torque, it doesn’t mean that they are comparatively larger and heavier in size. On the contrary, Suzuki’s engineers have targeted this big block motor to be one of the lightest four strokes in the 175 HP class.

Fuel Efficient

With a combination of our Lean Burn technology, a semi-direct intake system, and a high-performance compression ratio of 10.2-to-1, these new outboards deliver clean, efficient power. Compared to the current 175 and 150, the DF175A is 14% more fuel efficient and the DF150A shows a 7% improvement for significant savings at the fuel dock.

Powerful

With more torque (3.1% more for the DF150A and 2.7% more for the DF175A), as well as Suzuki’s proven offset driveshaft layout with 2-stage gear reduction, these new outboards generate more power throughout the full rpm range. Even on heavier, fully loaded boats, the DF150A and 175A take performance to the next level.

Quick Acceleration

The DF150A and DF175A now share the same engine block used for our popular DF200A. More displacement and improved mechanical design combine for quicker acceleration, whether out of the hole or in mid-range. We’re satisfying our customers’ desire for performance and improved fuel economy.

Reliable

These new outboards take full advantage of Suzuki’s proven Ultimate 4-stroke technology to provide season after season of reliable performance. A knock sensor keeps the engine running smoothly for improved durability. An O2 sensor improves engine efficiency and Suzuki’s water-detecting system helps protect the engine from the effects of bad gas, which include poor combustion, lower power output, and corrosion.

Data used in this product information was obtained through in–house testing under uniform conditions. Results will vary depending on operating conditions.

Advanced Technology for the Performance

Offset Driveshaft

EXPLANATION

The engine powerhead is offset closer to the transom, moving the outboard’s center of gravity forward.

ADVANTAGE

Less vibration

More compact engine

Stable steering performance

Diagram of Offset Driveshaft

2-Stage Gear Reduction

EXPLANATION

This system which incorporates the Offset Driveshaft features a first stage reduction between the crankshaft and drive shaft and a second stage reduction inside the gear case. This design makes a larger gear ratio possible, allowing it to turn a large-diameter propeller for high propulsive efficiency while providing greater torque.

ADVANTAGE

High propulsive efficiency with large diameter propeller.

Powerful navigation, maintaining propeller rotation even with a larger load.

Power to turn large-diameter propellers, offering quick acceleration.

Diagram of 2-Stage Gear Reduction

Multi-Stage Induction System

EXPLANATION

Intake manifold pipes are switched between short and long ones during low-speed and high-speed operation to ensure the right volume of air entering the engine.

ADVANTAGE

Increases output during high-speed operation with greater volume of air input.

Increases combustion efficiency and maximizes torque by increasing the density in the air intake during low speed operation.

VVT (Variable Valve Timing)

EXPLANATION

The Variable Valve Timing is used to control the open and close timing on the intake valve depending on the engine operation.

ADVANTAGE

Offers smooth, powerful torque.

Provides tremendous acceleration during operation at all speed ranges.

Semi-Direct Air Intake System

EXPLANATION

This system brings cooler air directly into the multi- stage intake manifold, making it possible for the engine to operate more efficiently.

ADVANTAGE

Greater acceleration and top-end speed.

Diagram of Semi-direct Air Intake System

Diagram of Semi-direct Air Intake System

O2 Sensor Feedback Control System

EXPLANATION

This system provides accurate, real-time information Delete the ECU uses to manage the fuel/ air ratio as operating conditions change.

ADVANTAGE

Enables emissions to be clean and stable.

Helps maintain optimum engine operating efficiency across the engine’s full operating range.

Lean Burn

EXPLANATION

The Lean Burn Control System supplies the right fuel and air mixture depending on the navigation conditions.

ADVANTAGE

Significant improvement in fuel economy in all speed ranges especially at cruising speed.

Fuel use and expense are reduced thanks to improved fuel economy.

Suzuki Anti-Corrosion System

EXPLANATION

Special protection is applied to the aluminum surface using high strength bonding to protect the aluminum made exterior parts.

ADVANTAGE

Protection against corrosion helps increase the overall engine durability.

Diagram of Suzuki Anti-Corrosion System

Suzuki Water Detecting System

EXPLANATION

Designed to help protect the engine from moisture in the fuel utilizing a water detecting fuel filter to alert the operator with both visual and audio warnings when water is present in the fuel.

ADVANTAGE

Protects engine from poor combustion, lower power output, and corrosion.

Picture of Suzuki Water Detecting System

MODELDF175A

RECOMMENDED TRANSOM HEIGHT mm (in.) L:508 (20), X:635 (25)

STARTING SYSTEM Electric

WEIGHT kg *1 L:235, X:240

ENGINE TYPE DOHC 16-Valve

FUEL DELIVERY SYSTEM Multi-Point Sequential Electronic Fuel Injection

1. In-Line 4

PISTON DISPLACEMENT cm3 (cu.in.) 2,867 (174.9)

BORE × STROKE mm (in.) 97 × 97 (3.81× 3 .81)

MAXIMUM OUTPUT kW (PS) 129.0 (175)

FULL THROTTLE OPERATING RANGE rpm 5,500-6,100

STEERING Remote

OIL PAN CAPACITY Lit. (U.S. qt) 8.0 (8.5)

IGNITION SYSTEM Fully-transistorized

ALTERNATOR 12V 44A

ENGINE MOUNTING Shear Mount

TRIM METHOD Power Trim and Tilt

GEAR RATIO 2.50:1

GEAR SHIFT F-N-R

EXHAUST Through Prop Hub Exhaust

PROPELLER SELECTION (Pitch) *2

3 blades and 4 blades propeller are available. 15″-27.5″(R/R), 17″-26(C/R)

Dry Weight: Including battery cable, not including propeller and engine oil.