Suzuki 20 HP Outboard Motors for Sale | Boat Max Online for Sale

Suzuki DF20A; Compact EFI Performance for Fishing Boats and Small Cruisers

The Suzuki DF20A is the top output of Suzuki's 327 cc two-cylinder EFI family (DF9.9B, DF15A, DF20A). Suzuki lists it at 97 lb for the manual-start short shaft, 105 lb electric short and 108 lb electric long, which makes it one of the lightest fuel-injected 20 HP outboards available. Battery-less multi-point EFI with Lean Burn means no choke, easy cold starts and low fuel use at cruise.

Service basics from the owner's manual: 1.0 L SAE 10W-40 (1.1 L with a new 16510-45H10 filter), NGK MR6K-9 plugs (2018 and newer; CPR6EA-9 on 2013–2017), gear oil at 20 hours then every 100 hours, impeller inspected at 200 hours and replaced at 300 hours or 36 months, timing belt inspected every 200 hours and replaced every 4 years. Full-throttle range is 5,300–6,300 rpm. Electric-start models need a 12 V starting battery of at least 450 MCA / 330 CCA, supplied by the owner.

Manual start, tiller: DF20AS (15 in.), white DF20ASW
Electric start, tiller: DF20AES (15 in.), DF20AEL (20 in., manual tilt)
Electric start, power tilt, tiller: DF20ATHL (20 in.), white DF20ATHLW
Electric start, power tilt, remote steering: DF20ATS (15 in.), DF20ATL (20 in.); white versions available

Good matches: 12–15 ft aluminum fishing boats, RIBs and inflatables, skiffs and sailboat auxiliaries.

Boat Max Online is an authorized Suzuki Marine dealer. Every DF20A is new and registered for Suzuki's limited warranty (currently 5 years for non-commercial use on qualifying purchases through March 31, 2027). Motors ship free to the lower 48 with liftgate service; parts orders over $149 ship free.

Servicing it yourself? See the DF9.9B/15A/20A oil change kit and Suzuki maintenance kits.

Specifications from the Suzuki owner's manual and suzukimarine.com.

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SUZUKI MOTORS Frequently Asked Questions

How does the Suzuki DF20A compare to the DF25A?

The DF25A has a larger 431cc engine and provides more top-end speed and load capacity. The DF20A is lighter, more compact, and better suited for smaller boats where the extra horsepower of the DF25A is not needed.

Is the Suzuki DF20A carbureted or fuel-injected?

The Suzuki DF20A features multi-point sequential electronic fuel injection (EFI), making it one of the few 20 HP outboards with factory EFI. This provides cleaner starts, better fuel economy, and improved reliability.

Does the Suzuki DF20A require unleaded regular gasoline?

Yes. The DF20A runs on standard 87 octane (or higher) unleaded gasoline. No special fuel additives are required under normal operating conditions.

What are the shaft length options for the Suzuki DF20A?

The DF20A is available in short shaft (15") and long shaft (20") versions. Choose short shaft for most aluminum fishing boats and long shaft for deep-V hulls or higher transoms.