Suzuki Marine 20 HP DF20AES2 EFI Outboard Motor
$8,300.00
The Suzuki DF20AES2 is the world’s first 20 HP outboard motor designed with Battery-Less Electronic Fuel Injection and Suzuki’s Lean Burn Control System — a technological breakthrough that delivers quicker starts, smoother acceleration, and superior fuel economy . This 2-cylinder, 327cc four-stroke portable outboard produces 20 HP at 5,300–6,300 RPM, configured with electric start, 12V alternator, and 15-inch shaft — making it the ideal choice for larger jon boats, skiffs, and inflatables across California and the United States .
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Description
The DF20AES2 incorporates technology that’s genuinely unique in its class. Suzuki’s engineers completely redesigned fuel injection system components to be smaller and lighter than any previous system, making battery-less EFI possible in this horsepower class . Even with electric start, the engine’s EFI system operates without battery power — the battery is used only to turn the flywheel, not to run the fuel injection .
The Lean Burn Control System continuously monitors engine performance and operating conditions to predict fuel needs and deliver a leaner fuel-air mixture, resulting in up to 17% better fuel economy than some competitor’s 4-strokes . This isn’t marketing language — it’s a measurable advantage for boaters facing rising fuel costs.
The DF20AES2 is the lightest outboard in its class at just 106 lbs (48 kg) with electric start, making it noticeably easier to handle, transport, and mount than competitors . The engine also features decompression release for easy starts, a fresh water flushing port for simplified maintenance, and multi-layer corrosion protection designed specifically for saltwater environments .
| Specification | Value |
|---|---|
| Model | Suzuki DF20AES2 |
| Engine Type | 4-Stroke SOHC 4-Valve, In-line 2 |
| Displacement | 327 cc (20.0 in³) |
| Bore × Stroke | 60.4 mm × 57 mm (2.38 in × 2.24 in) |
| Maximum Output | 20 HP (14.7 kW) |
| Operating Range | 5,300–6,300 RPM |
| Fuel System | Battery-Less Electronic Fuel Injection with Lean Burn |
| Starting System | Electric Start + Thru-Cowling Manual Back-Up |
| Ignition System | Digital CDI |
| Gear Ratio | 2.08:1 |
| Transom Height | 15 inches (Short) |
| Weight | 106 lbs (48 kg) |
| Oil Capacity | 33.8 fl oz (1.0 L) |
| Alternator Output | 12V 145W 10A |
| Trim System | Manual, 5 Tilt Pin Positions |
| Steering | Tiller |
| Propeller | 3-Blade Aluminum 9.25″ × 10″ Pitch |
| Propeller Selection | 7″–11″ pitch range |
| Fuel Tank | 3.1 US Gallon External |
| CARB Rating | 3-Star Ultra-Low Emission |
The 20 HP portable outboard segment is competitive, with strong offerings from Mercury 20 FourStroke, Yamaha F20, and Tohatsu MFS 20E. Here’s how the DF20AES2 compares on the specifications that matter:
| Feature | Suzuki DF20AES2 | Mercury 20 | Yamaha F20 | Tohatsu 20 |
|---|---|---|---|---|
| Displacement | 327 cc | 333 cc | 362 cc | 333 cc |
| Fuel System | Battery-Less EFI | EFI | EFI | EFI |
| Weight (Electric) | 106 lbs (48 kg) | 109 lbs | 111 lbs | 107 lbs |
| Lean Burn | Yes | No | No | No |
| Electric Start | Yes | Yes | Yes | Yes |
| Manual Back-Up Start | Yes | No | No | No |
| Alternator | 12V 10A | 12V 6A | 12V 10A | 12V 6A |
| Warranty | 5-Year | 3-Year | 3-Year | 5-Year |
The DF20AES2 matches or beats competitors on weight while delivering Suzuki’s industry-leading 5-year manufacturer warranty . Its battery-less EFI system and thru-cowling manual back-up starting are genuine practical advantages — the Mercury and Yamaha models lack the manual backup start feature . The Tohatsu is manufactured by the same company that builds Mercury/Mariner 20 HP motors, with virtually identical performance .
The DF20AES2 is well-suited to a wide range of American boating applications:
Larger jon boats and skiffs — electric start and reliable power for fishing
Inflatables and tenders — portable enough for easy transport and storage
Sailboat auxiliary power — dependable thrust for docking and maneuvering
Kicker motors — reliable backup power for larger fishing boats
The engine features a forward-mounted gear shift lever for easy operation, a twist-grip throttle with tension control, and shallow water drive capability for navigating shallows . The electric start system eliminates the effort of manual recoil starting, while the 12V 145W alternator keeps your battery charged for onboard electronics like fish finders and radios .
All motors ship from our San Francisco, CA warehouse with fast nationwide shipping. California residents pay applicable sales tax; out-of-state buyers receive straightforward delivery to their doorstep.
Suzuki DF20AES2 outboard motor (15″ shaft)
3.1 gallon fuel tank and fuel line
3-blade aluminum propeller (9.25″ × 10″)
Tool kit
Owner’s manual
Suzuki 5-Year Manufacturer Warranty
Complete your installation with these compatible components and services:
Suzuki outboard motor propellers — 7″–11″ pitch options for optimal performance
Zinc anode kit for Suzuki DF20AES2 — protect against saltwater corrosion
Suzuki outboard motor flusher — essential for post-saltwater flushing
Boatworld foldable outboard engine trolley — safe storage and transport
Outboard motor service kit — impeller, spark plugs, and fuel filters
Boatworld heavy duty outboard lock — security for your investment
Marine fuel stabilizer — protect your EFI system during storage
Suzuki DF20AES2 propeller selection guide — match pitch to your boat and load
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SKU: SUZ-DF20AES2-15
MPN: DF20AES2
Brand: Suzuki Marine
Category: Outboard Motors > Portable (15–20 HP)
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