Mercury 2.5 HP, 4-STK 2018 Short Shaft [ME2.5SM4S] Expand

2.5 HP Mercury 4 Stroke Outboard Short Shaft [ME 2.5 MH 4S]

Mercury Marine Mercury Marine



Reviews: ⭐

  • 2.5 HP
  • 4 Stroke (40 percent less fuel!)
  • Short Shaft
  • Forward Neutral Shift
  • 3 years factory warranty!

More details


Mercury 2.5 HP, 4-STK 2018 Short Shaft [ME2.5SM4S] 

Mercury Marine’s 4-stroke technology consumes 40 percent less fuel than 2-stroke models for extraordinary value and savings.

Engines surpass California Air Resources Board (CARB) 3-Star Rating, making them some of the cleanest running on the market-with 91% less emissions than traditional 2-stroke outboards!

The inherent 4-stroke characteristics of ultra-quiet, smoke-free operation, plus smooth idling and running make these engines a natural choice whether you’re trolling for fish or out just for fun. Clean running 4-stroke engines have a CARB three-star, ultra-low emissions rating. The decompression system and electronic CD ignition design ensure an easy, reliable start. One-stage over-rev protection and low oil pressure warning system provide extra peace of mind. 

Key Features

  • Patented one-piece integrated cylinder block design provides added reliability by eliminating gaskets and fasteners and makes the powerhead much more compact and lightweight
  • Check oil level without removing the cowling with convenient, easy-to-view sight gauge
  • This engine delivers maximum performance with the largest displacement in the 2.5 hp category
  • A twist-grip throttle and 360-degree steering make it easy to use
  • For U.S. shipment ONLY


  • Engine Type: 4-stroke
  • Full Throttle RPM: 2.5hp: 4,500-5,500
  • Exhaust System: Above prop
  • Dry Weight: 38 lbs.
  • Start: Manual, with decompression system
  • Steering Type: Tiller with 360° turning
  • Gearing: F-N, 2.15:1
  • Trim Positions: 4
  • Tank Type: Integral fuel tank
  • Tank Capacity: 0.3gal.
Color Black
Output 2.5 HP
Engine Type 4 Stroke
Start Manual, with decompression system
RPM Range 4500-5500
Cylinders 1
Displacement 5.2 cu. in. (85 cc)
Shaft Length 15"
Standard Propeller 5.7" x 7.4"
Tank Type Integral fuel tank
Tank Capacity 0.3 gal
Trim Positions 4
Gearing F-N, 2.15:1
Weight 41 Lbs
Factory Warranty 3 Years (Limited)

Mercury Marine® is a large company with locations, employees, and dealers all around the world. It started back in 1939, when Carl Kiekhaefer (from Mequon Wisconsin) built the first Mercury outboard, the company was pretty small. Carl was a dreamer and tinkerer. He loved the outdoors. He loved engineering. And he loved to go fast. He was a great role model, too. 

Mercury Marine has been making world-class outboards and sterndrives for more than 75 years. It has grown into the largest builder of marine propulsion systems in the world. Number one on the water. and didn't get there by sitting still.

Mercury Marine's long history of firsts and foremosts. A history of constant improvements, as they've set and reset the standards for reliable, trouble-free performance; superior power and torque; low emission; and low fuel consumption. And nobody has given boaters more more ways to propel their specific boats, activities, and pursuits reliably, comfortably, and efficiently across the water.

Write your review !


Mercury Portable Outboards 2.5 hp - 6 hp