Original price was: $5,096.00.$2,548.00Current price is: $2,548.00.
25 HP four-stroke, 500cc inline 3-cylinder engine
15″ short shaft with remote mechanical steering
Electronic Fuel Injection (EFI) for reliable starts
Lightweight at 145 lbs with low-vibration mounts
3.2-gallon external fuel tank
Corrosion-resistant for freshwater/saltwater use
Electric start with power trim & tilt
Adjustable throttle and steering tension
The Mercury 25EPT is a compact, lightweight four-stroke outboard motor designed for small boats such as jon boats, skiffs, inflatables, and small fishing vessels up to 14-16 feet. Featuring a 15-inch short shaft, it weighs 145 lbs, making it one of the lightest in its 25 HP class. The 500cc (30.5 cubic inch) inline 3-cylinder engine with Electronic Fuel Injection (EFI) delivers strong low-end torque for quick planing and a full throttle range of 5400-5800 RPM. Equipped with remote mechanical steering for precise control, electric start for effortless ignition, and power trim & tilt for easy adjustments. The motor features a 3.2-gallon external fuel tank, low-vibration soft-rubber mounts for smooth operation, and an 18-amp alternator to support electronics. Built for durability in freshwater and saltwater, it uses low-copper aluminum alloys, stainless steel components, and a multi-layered priming and painting process for superior corrosion resistance. With reliable starting, instant throttle response, and fuel efficiency, the 25EPT is ideal for worry-free boating.
| Engine | 4-stroke, SOHC | Inline 3-cylinder | 500cc / 30.5 cu in | 25 HP @ 5400-5800 RPM | EFI, 6-valve | Digital CD ignition | Water-cooled |
| Shaft | 15″ short | Corrosion-resistant | 9.2″ x 10.1″ 3-blade prop | Shallow water drive | Power trim & tilt | Standard rotation | Salt/freshwater rated |
| Controls | Remote mechanical steering | Electric start | Adjustable throttle | Power trim & tilt | Steering tension control | Safety lanyard | Engine alert system |
| Charging | 18 amps / 226 watts | Low-speed charging | Regulated charging | Supports electronics | Optional alternator | Maintenance-free | Battery required |
| Weight | 145 lbs / 66 kg | Lightweight design | Balanced weight | Portable for class | Minimal drag | Easy transport | Transom mount |
| Performance | 5400-5800 RPM range | Fuel-efficient | Low emissions | High torque | Quick acceleration | Quiet operation | Top speed 25-28 mph |
| Compatibility | 14-16 ft boats | Jon boats, skiffs | Inflatables | 3.2-gal external tank | Aluminum prop | Salt/freshwater rated | Remote steer boats |
| Dimensions | 15″ shaft length | 16.2″ W | 39.8″ H | 26.1″ L | Corrosion-resistant | Transom mount | Power tilt |
| Engine | 4-stroke, SOHC | Inline 3-cylinder | 500cc / 30.5 cu in | 25 HP @ 5400-5800 RPM | EFI, 6-valve | Digital CD ignition | Water-cooled |
| Shaft | 15″ short | Corrosion-resistant | 9.2″ x 10.1″ 3-blade prop | Shallow water drive | Power trim & tilt | Standard rotation | Salt/freshwater rated |
| Controls | Remote mechanical steering | Electric start | Adjustable throttle | Power trim & tilt | Steering tension control | Safety lanyard | Engine alert system |
| Charging | 18 amps / 226 watts | Low-speed charging | Regulated charging | Supports electronics | Optional alternator | Maintenance-free | Battery required |
| Weight | 145 lbs / 66 kg | Lightweight design | Balanced weight | Portable for class | Minimal drag | Easy transport | Transom mount |
| Performance | 5400-5800 RPM range | Fuel-efficient | Low emissions | High torque | Quick acceleration | Quiet operation | Top speed 25-28 mph |
| Compatibility | 14-16 ft boats | Jon boats, skiffs | Inflatables | 3.2-gal external tank | Aluminum prop | Salt/freshwater rated | Remote steer boats |
| Dimensions | 15″ shaft length | 16.2″ W | 39.8″ H | 26.1″ L | Corrosion-resistant | Transom mount | Power tilt |
High-Performance Engine: 500cc inline 3-cylinder engine with EFI and 6-valve SOHC design provides strong torque, quick acceleration, and fuel efficiency for small boats.
Remote Mechanical Steering: Offers precise control with an adjustable steering system, enhancing maneuverability for diverse boating conditions.
Lightweight Design: At 145 lbs, it’s among the lightest 25 HP outboards, enhancing portability and reducing drag on small vessels.
Reliable Starting: EFI and electric start system ensure effortless ignition in all conditions, with instant throttle response for smooth operation.
Corrosion Resistance: Low-copper aluminum alloys, stainless steel water pump housing, zinc-coated passages, and sacrificial anodes ensure durability in harsh marine environments.
Smooth Operation: Soft-rubber mounts and tuned intake reduce vibration, while a through-propeller-hub exhaust minimizes noise for a comfortable ride.
Fuel Efficiency: EFI optimizes fuel delivery, paired with a 3.2-gallon external tank for extended range, using 87-octane fuel with up to 10% ethanol.
Safety Features: Engine alert system monitors low oil pressure, overheating, over-revving, and sensor failure, with a safety lanyard for emergency stops.
How Does Shipping Work and How Long Does It Take?
We understand how important it is for your new item to arrive safely and in perfect condition. We partner with professional carriers to ensure every order is handled with expert care from start to finish.
Order Processing & Shipping Times
Orders are processed and shipped within 2-5 business days (excluding weekends and holidays). All items are delivered within 10 business days from the date of shipment. As your delivery date nears, the shipper will contact you to coordinate a seamless drop-off.
Before ordering, please verify your shipping address to prevent delays. Your satisfaction is our priority, and we’re committed to making your shopping experience smooth and enjoyable. Have questions? Email us at sales@go2float.com—we’re here to help!
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6 reviews for Mercury 25hp EFI 15″ Shaft | 25EPT
+ FREE GIFT
Great on my 14-foot jon boat—the 25EPT’s 15″ shaft fits low transoms perfectly, and EFI ensures snappy throttle response. Strong torque planes me fast with gear, about 7 mpg at cruise. Hits 20 mph solo. Minor con: manual tilt takes a bit of muscle in muddy shallows, but the quiet run and fuel savings make it ideal for pond hopping.
Upgraded to this 25hp EFI for my yacht tender, and it’s a dream. Electric start fires instantly, and the inline-3 sips fuel—about 6 mpg cruising. Pushes 18 mph loaded, trolls down to 1 mph precisely for docking. The 500cc engine punches above its weight with zero vibes. Whisper-quiet for marina etiquette, and at 145 lbs, it’s a cinch to handle. Mercury nailed it!
Runs great on my 14-foot jon boat—the 15″ shaft fits low transoms perfectly, and EFI gives crisp throttle response. Strong torque planes me fast with fishing gear, about 7 mpg at cruise. Hits 20 mph solo. Only minor issue is manual tilt takes effort in muddy spots, but the quiet run and efficiency are ideal for pond fishing.
This 25EPT is a beast on my 12-foot inflatable—145 lbs makes it easy to mount solo, and the 15″ shaft keeps it clear of shallows. EFI starts instantly every time, no battery needed, even after months in storage. Trolled for bluegill all day on under 2 gallons, hitting 19 mph with two aboard. Super quiet inline-3 with smooth torque—perfect for stealthy fishing!
The 25EPT is a lightweight powerhouse on my 12-foot inflatable—145 lbs makes solo mounting a breeze, and the 15″ shaft is perfect for shallow waters without dragging. Battery-free EFI starts with one push every time, even in chilly fog. Trolled for bluegill all day on under 2 gallons, hitting 19 mph with two aboard. Smooth torque, ultra-quiet—Mercury’s portable gem for small craft!