Mercury 4 HP FourStroke 2026: The Current Easy-Owner Four
The 2026 Mercury 4 HP FourStroke is the newest build of the 123cc single that made small-outboard ownership genuinely easy: no-spill oil change, easy-out fuel filter, lifetime maintenance-free valve train, advanced tiller, and quiet through-prop exhaust. The current low-effort pick in the small horsepower class.
Key Features (2026)
- Large 123cc single
- No-spill oil change; maintenance-free valve train
- Advanced tiller; through-prop exhaust
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
Current-year convenience for aluminum tiller boats, inflatables, jons, and sailboats. Rivals: Suzuki DF4A 2026, Honda BF4 2026. Same block, top tune: Mercury 6 HP 2026.
Compare Model Years
Save with the 4 HP 2024 or 4 HP 2025, all Mercury Outboards, or the Mercury brand guide.
Frequently Asked Questions
How much is the 2026 model?
$1,800, in stock.
What maintenance does it skip?
Valve adjustments (lifetime maintenance-free) and messy oil drains (no-spill system).
Best boats?
Aluminum tiller boats, inflatables, jons, utility boats, and sailboats.



