Mercury FourStroke 5 HP Outboard Motor 2024

Mercury 5 HP FourStroke 2024: True Five, Big Block

The 2024 Mercury 5 HP FourStroke leans on its large 123cc displacement to deliver best-in-class power — a true 5 horsepower with quick acceleration and calm, low-vibration manners. Mercury’s ownership advantages carry over: no-spill oil change system, easy-out fuel filter, lifetime maintenance-free valve train, and the advanced tiller. A Sail Power variant adds an alternator and extra thrust for sailboat duty. One of the strongest values in the 5HP outboard class.

Key Features (2024)

• Large 123cc single — best-in-class true 5HP
• No-spill oil change; maintenance-free valve train
• Sail Power variant — alternator + more thrust
• Advanced tiller; through-prop exhaust

Specifications

• Engine: 1-cylinder four stroke, 123cc
• Horsepower: 5 HP
• Starting: Manual
• Steering: Tiller
• Fuel: Internal/external tank options, 87 octane
• Shaft: 15″ (S) / 20″ (L)

Benefits & Applications

Effortless five-horse push for aluminum tiller boats, inflatables, jons, utility boats — and with Sail Power, an ideal sail auxiliary. Rivals: Suzuki DF5A 2024, Honda BF5 2024. Top of the block: Mercury 6 HP 2024.

Compare Model Years

See the 5 HP 2025 and 5 HP 2026, all Mercury Outboards, or the Mercury brand guide.

Frequently Asked Questions

What is the Sail Power version?

A sailboat-focused variant with an alternator for battery charging and extra thrust for displacement hulls.

Why “true 5 horsepower”?

The big 123cc block produces full rated power without strain — Mercury calls it best-in-class power.

Best boats?

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