Original price was: $4,650.00.$2,325.00Current price is: $2,325.00.
25 HP four-stroke, 500cc inline three-cylinder engine
15″ short shaft with multi-function tiller
Electronic Fuel Injection (EFI) for reliable starts
Lightweight at 138 lbs with low-vibration mounts
3.2-gallon external fuel tank
Corrosion-resistant for freshwater/saltwater use
Electric start with manual tilt
Adjustable throttle and steering tension
The Mercury 25EH 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 138 lbs, making it one of the lightest in its 25 HP class. The 500cc (30.5 cubic inch) inline three-cylinder engine with Electronic Fuel Injection (EFI) delivers strong low-end torque for quick planing and a full throttle range of 5000-6000 RPM. Its innovative multi-function tiller handle, adjustable 18 degrees port or starboard and reversible for left- or right-hand use, offers exceptional control and comfort. The motor features a 3.2-gallon external fuel tank, an electric start system for effortless ignition, and low-vibration wishbone mounts for smooth operation. 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 25EH is ideal for worry-free boating.
| Engine | 4-stroke, SOHC | Inline 3-cylinder | 500cc / 30.5 cu in | 25 HP @ 5000-6000 RPM | EFI, 4-valve | Digital CD ignition | Water-cooled |
| Shaft | 15″ short | Corrosion-resistant | 9.2″ x 10.1″ 3-blade prop | Shallow water drive | 16° trim range | Standard rotation | Salt/freshwater rated |
| Controls | Multi-function tiller | Electric start | Adjustable throttle | 18° tiller adjustment | Steering tension control | Safety lanyard | Engine alert system |
| Charging | 12 amps / 145 watts | Low-speed charging | Regulated charging | Supports electronics | Optional alternator | Maintenance-free | Battery required |
| Weight | 138 lbs / 63 kg | Lightweight design | Balanced weight | Portable for class | Minimal drag | Easy transport | Transom mount |
| Performance | 5000-6000 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 | Tiller steer boats |
| Dimensions | 15″ shaft length | 16.2″ W | 39.8″ H | 26.1″ L | Corrosion-resistant | Transom mount | Manual tilt |
| Engine | 4-stroke, SOHC | Inline 3-cylinder | 500cc / 30.5 cu in | 25 HP @ 5000-6000 RPM | EFI, 4-valve | Digital CD ignition | Water-cooled |
| Shaft | 15″ short | Corrosion-resistant | 9.2″ x 10.1″ 3-blade prop | Shallow water drive | 16° trim range | Standard rotation | Salt/freshwater rated |
| Controls | Multi-function tiller | Electric start | Adjustable throttle | 18° tiller adjustment | Steering tension control | Safety lanyard | Engine alert system |
| Charging | 12 amps / 145 watts | Low-speed charging | Regulated charging | Supports electronics | Optional alternator | Maintenance-free | Battery required |
| Weight | 138 lbs / 63 kg | Lightweight design | Balanced weight | Portable for class | Minimal drag | Easy transport | Transom mount |
| Performance | 5000-6000 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 | Tiller steer boats |
| Dimensions | 15″ shaft length | 16.2″ W | 39.8″ H | 26.1″ L | Corrosion-resistant | Transom mount | Manual tilt |
High-Performance Engine: 500cc inline three-cylinder engine with EFI and a 4-valve SOHC design provides strong torque, quick acceleration, and fuel efficiency for small to medium boats.
Innovative Tiller: Multi-function tiller adjusts 18 degrees port/starboard, offers reversible throttle grip rotation, and includes a stop button for ergonomic, ambidextrous control.
Lightweight Design: At 138 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: Wishbone 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@faa-marine.com—we’re here to help!
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8 reviews for Mercury 25hp EFI 15″ Shaft | 25EH
+ FREE GIFT
Perfect portable for my bayou dinghy—the 25EH’s EFI optimizes power for all-day runs without bogging. Electric start in any humidity, strong torque gets me moving quick, and efficiency saves on gas hauls. Hits 18 mph with family, all while staying vibration-free and quiet. At 138 lbs, trailering solo is effortless. Top-notch for shallow water fun!
Installed the 25hp EFI on my bass tender, and the throttle response is spot-on for precise trolling. Battery-free starts are reliable, fuel burn low for long drifts—under 1.5 gallons per outing. Great power for 20 mph bursts. Slight con: tiller grip could be grippier in wet hands, but overall, quiet and efficient performer.
The 25EH is a lightweight powerhouse on my 13-foot inflatable—138 lbs makes solo mounting easy, and the 15″ shaft is ideal for shallow ponds. Battery-free EFI starts with one push every time, even in cool mist. Trolled for bluegill all day on under 2 gallons, hitting 20 mph with two aboard. Smooth torque, super quiet—perfect for tight spaces and big adventures!