Mercury FourStroke 4 HP Outboard Motor 2024

Mercury 4 HP FourStroke 2024: The 123cc Advantage Begins

The 2024 Mercury 4 HP FourStroke steps up to Mercury’s large 123cc single-cylinder platform — generous displacement that produces its 4HP with ease, quick acceleration, and low vibration. Mercury’s convenience engineering shines here: a no-spill oil change system, easy-out fuel filter, and lifetime maintenance-free valve train slash upkeep, while the advanced tiller keeps controls in easy reach. Lightweight and simple to install, it’s a torquey value in the small horsepower class.

Key Features (2024)

• Large 123cc single — effortless 4HP, strong torque
• No-spill oil change; easy-out fuel filter; maintenance-free valve train
• Advanced tiller; through-prop exhaust
• Lightweight, easy to install and operate

Specifications

• Engine: 1-cylinder four stroke, 123cc
• Horsepower: 4 HP
• Starting: Manual
• Steering: Tiller
• Fuel: Internal/external tank options, 87 octane
• Shaft: 15″ (S) / 20″ (L)

Benefits & Applications

Big-displacement ease with Mercury’s lowest-maintenance design — for aluminum tiller boats, inflatables, jons, utility boats, and sailboats. Rivals: Yamaha F4 2024, Suzuki DF4A 2024. Same block, more power: Mercury 6 HP 2024.

Compare Model Years

See the 4 HP 2025 and 4 HP 2026, all Mercury Outboards, or the Mercury brand guide.

Frequently Asked Questions

What is the no-spill oil change system?

Mercury’s design lets you drain oil cleanly without the usual mess — a small feature you’ll appreciate every season.

Is the valve train really maintenance-free?

Yes — Mercury specifies a lifetime maintenance-free valve train on this platform.

Best boats?

Aluminum tiller boats, inflatables, jon and utility boats, and sailboats.