Suzuki 350 HP DF350ATX2 Outboard Motor

Description

We have the Suzuki DF350ATX2 for sale new in the factory crate. It is Suzuki’s 350 horsepower V6 dual prop four stroke with a 25 inch shaft, power trim and tilt, electric start and remote steering, finished in pearl nebular black. If you run an offshore centre console, a big bay boat or a heavy cabin boat, this is the class of motor most owners end up choosing.

We sell new outboards to private owners, fishing operators, boat builders and dealers, and we ship worldwide. Tell us where your boat is and we send you a delivery quote before you commit to anything. It is one of the reasons we keep the Suzuki DF350ATX2 for sale in stock.

Below you will find the full specs, what the model code means, the boats it suits, rigging, maintenance and the questions buyers ask us most. It is a long page on purpose. A motor like this is a serious purchase and most people want the details first.

Suzuki DF350ATX2 for sale: Specifications

Numbers can move a little between production runs, so the paperwork in the crate is the final word. Suzuki keeps the current figures on its DF350A page on Suzuki Marine if you want to compare models side by side.

What the Model Code on the Suzuki DF350ATX2 for sale Means

Suzuki model codes look confusing until someone explains them once. DF is Suzuki’s four stroke prefix and 350 is the horsepower. The A marks the A generation of this engine. T means power trim and tilt. X is an extra long shaft, for a 25 inch transom. The 2 at the end is the series number in Suzuki’s order code.

What you do not see in the code matters too: there is no W, so the cowl is black. You get all of that with the Suzuki DF350ATX2 for sale.

Why the Suzuki DF350ATX2 for sale Uses Two Propellers

Most outboards turn one propeller. The DF350A turns two, one behind the other, spinning in opposite directions. Suzuki went this way because 350 horsepower needs big, strong gears, and big gears mean a fat gearcase that drags through the water. Splitting the load across two props cuts the torque each one has to carry, so the gears can be smaller and the gearcase slimmer.

On the water you feel it as grip. The boat hooks up out of the hole, holds a line in turns and backs down straight without walking sideways. Skippers coming off big single prop engines usually notice the reverse first. Docking a heavy boat gets a lot less dramatic.

The powerhead is a 4.4 litre V6 with a 12.0 to 1 compression ratio, which is high for an outboard. Suzuki makes that work with a direct air intake that feeds cool outside air to the engine, dual injectors per cylinder and a knock sensor that watches combustion. The result is a lot of power from a block that is still compact enough to hang in pairs, threes and fours on big centre consoles. Ask us if you want photos of the Suzuki DF350ATX2 for sale before it ships.

Suzuki Precision Control on the Suzuki DF350ATX2 for sale

This motor uses drive by wire controls. There are no throttle or shift cables. Instead the helm sends an electronic signal to the engine, which gives very smooth shifts and quick, precise throttle response. It also makes multi engine rigs much easier to sync, and it opens the door to options like Suzuki Troll Mode and keyless start. You will need Suzuki digital controls and harnesses to rig it. We can quote those with the motor if you ask.

Boats That Suit the Suzuki DF350ATX2 for sale

Big offshore centre consoles

Twin and triple DF350A rigs are common on 30 to 40 foot centre consoles. With the right props these boats cruise in the high 30s and 40s with a full crew and gear.

Sport fishing and dual consoles

Heavier dual console and express boats use the extra torque to stay on plane at lower revs, which saves fuel on long runs.

Commercial and government boats

Patrol, rescue and pilot boats like the Suzuki DF350ATX2 for sale because the dual prop holds in rough water and the V6 is built for long hours.

Repowers from older big two strokes

Owners replacing pairs of old 250 or 300 two strokes often step up to 350s and get better fuel use, cleaner running and much quieter trips.

How the Suzuki DF350ATX2 for sale Feels on the Water

At idle the Suzuki DF350ATX2 for sale is quieter than people expect from 350 horses. Shifting is done electronically through Suzuki Precision Control, so there is no clunk, just a soft engagement.

When you push the lever the boat climbs onto plane flat and fast. The dual props keep their bite in rough water too, which is a big deal offshore when the stern lifts on a wave and a single prop would blow out. Once you settle into cruise, Lean Burn trims the fuel mixture back and the motor runs easy.

Single or Twin Installs

Because the dual props already turn in opposite directions, the Suzuki DF350ATX2 for sale does not need a separate counter rotating version for twin rigs. The same motor goes on both sides. That keeps twin, triple and quad rigs simple and means one spare covers every position.

For multi engine boats, tell us how many motors you need and we will match serial numbers, shaft lengths and colours so the rig looks and runs as one. We are happy to answer questions about the Suzuki DF350ATX2 for sale by email or chat.

Colour and Finish

Black is the standard Suzuki finish and suits almost any boat. If you want a white cowl to match a white hull, ask us about the W version of this motor. The engine underneath is the same.

Rigging the Suzuki DF350ATX2 for sale

This is a drive by wire motor, so there are no throttle or shift cables. You will need Suzuki digital remote controls, the engine and helm harnesses, a compatible gauge, a steering system rated for the horsepower (hydraulic is normal at this size), a good marine battery and a fuel system with a water separating filter.

Mount the motor so the anti-ventilation plate sits roughly level with the bottom of the hull, then fine tune after a test run. If the prop blows out in turns, drop it a hole. If there is a lot of spray and drag, raise it. The 12 V, 54 amp alternator keeps electronics charged on a normal day. The Suzuki DF350ATX2 for sale handles this well.

Transom Height and Shaft Length

The 25 inch shaft suits most offshore boats and centre consoles. Measure from the top of the transom to the bottom of the hull at the centreline before you order. Around 25 inches means the X shaft is right. Boats on an outboard bracket or with a deep notch may need a different length, so measure carefully.

Suzuki DF350ATX2 for sale or the DF300AP?

The DF300AP is the step down. It uses a 4.0 litre V6, a single prop and Suzuki Selective Rotation. It is lighter and simpler to prop, and it suits a lot of 25 to 30 foot boats very well.

The Suzuki DF350ATX2 for sale makes sense when the boat is heavy, when you run triples or quads, or when you want the dual prop grip in rough water. If you are not sure which way to go, send us the boat, the load you carry and the speeds you want and we will tell you straight.

The People Who Order This Motor

We sell the Suzuki DF350ATX2 for sale to weekend boaters, full time fishermen, charter skippers and boat builders all over the world. What they have in common is that they want a new Suzuki with proper paperwork, delivered to their door at a clear price. That is what we do.

Day to Day Ownership

Good outboards fade into the background. You stop thinking about the engine and think about the fishing or the family instead. The Suzuki DF350ATX2 for sale starts on the first turn, idles cleanly with no choke and does not foul plugs after a slow morning. Keep up with flushing and servicing and it will keep doing that for years.

Breaking In the Suzuki DF350ATX2 for sale

Follow the break-in in the owner’s manual. In short: vary the revs during the first hours, do not hold it at full throttle for long, and change the engine oil and filter at the first service. A motor broken in gently uses less oil and runs smoother for the rest of its life.

Give the gearcase its first oil change at that service too. It flushes out the fine metal from new gears bedding in. This is where the Suzuki DF350ATX2 for sale earns its keep.

Keeping the Suzuki DF350ATX2 for sale Healthy

Nothing about this motor needs special tools for routine care. Stick to a simple routine:

• After every trip: flush, rinse and check the tell-tale stream.
• Every month in use: look at the anodes, the prop and the fuel filter bowl.
• Every 100 hours or yearly: engine oil, oil filter, gear oil and a grease of every fitting.
• Every two years or so: water pump impeller and thermostat check.
• At the major service: plugs, fuel filters and a check of the trim system.

The timing chain runs in oil and does not need replacing like a belt. That is one less big bill to plan for.

Matching the Motor to the Boat

The right motor is the one your boat is rated for, carrying the load you normally carry. Check the capacity plate for maximum horsepower and engine weight, then think about how you use the boat. Heavy loads, rough water and long runs all favour running close to the maximum rating. Light boats and calm water give you more freedom. If the numbers do not line up with 350 HP, ask us and we will point you to a better match. Plenty of buyers send us their boat details before ordering the Suzuki DF350ATX2 for sale, and we like that.

What It Costs to Run

Lean Burn control and the high compression ratio help the Suzuki DF350ATX2 for sale cruise efficiently for its size. Real burn depends on hull, load, props and how hard you run, so we do not quote invented numbers.

Servicing is not expensive either. Suzuki parts are widely stocked, and most routine jobs on the Suzuki DF350ATX2 for sale can be done by any decent marine mechanic or by a handy owner.

Keep the Fuel Clean

Most problems people blame on the engine start in the tank. Water, old fuel and dirt in the lines will make any motor run badly. Change the water separating filter every season, drain the bowl if you see water and use fresh fuel. In hot, humid places keep the tank as full as you can when the boat is parked, so there is less room for condensation.

Treat the fuel well and fuel injection rewards you with easy starts and smooth running. Keep that in mind when you set up the Suzuki DF350ATX2 for sale.

Choosing a Propeller for the Suzuki DF350ATX2 for sale

The right prop lets the motor reach its full throttle range of 5,700 to 6,300 rpm with your normal load aboard. If it over revs, go up in pitch. If it cannot get into the range, come down. Suzuki lists a Suzuki contra rotating dual propeller set for this motor.

Suzuki’s own props are a good match, and the Suzuki genuine parts and accessories range also covers filters, anodes and service kits. Or tell us your boat and load and we will suggest a starting prop.

Running Slow All Day

Anglers spend a lot of time at idle or just above it. A fuel injected four stroke handles that well. There is no smoke, no oil fouling and no hard restart after a long drift. Keep an eye on the battery if you run a lot of electronics at low revs, and give the motor a short run at higher revs on the way home to clear it out. That applies to the Suzuki DF350ATX2 for sale as much as any motor.

Instruments for the Suzuki DF350ATX2 for sale

Suzuki’s digital gauges read engine data straight from the motor, including fuel flow and service reminders. If you prefer, plain analogue tach and trim gauges work too. Whatever you fit, run tidy wiring with proper fuses. Good wiring now saves a lot of headaches later.

Batteries and Wiring

Use a marine starting battery with good cranking amps, keep the terminals clean and tight and fit a battery switch. If you run lots of electronics, a second house battery with a charging relay keeps the starting battery fresh. Corrosion on terminals and loose earth wires cause more no-start calls than anything inside the engine.

Looking After It in Salt Water

Fresh water flushing after every trip is the most important habit you can have. Use the flush port with a garden hose, rinse the outside and check the anodes regularly. On a mooring, keep the motor tilted up between trips so the gearcase is not sitting in the water. If you are unsure, send us a photo of the transom and we will check the Suzuki DF350ATX2 for sale is the right fit.

Hot and Cold Climates

In hot climates, check the tell-tale stream often and keep the cooling passages clean. Warm, silty water is hard on impellers. In cold climates, fuel injection makes starting easy, but drain the motor and winterise it properly before a freeze.

Towing and Ramp Habits

Long road trips are harder on an outboard than most people think. Use a motor support bracket rather than resting the motor on the tilt ram, and check the bolts on the transom clamp or mounting after the first few trips. At the ramp, back in, lower the motor, start it in the water and watch for the tell-tale before you drive off the trailer. Many repeat customers come back for a second Suzuki DF350ATX2 for sale on another boat.

Back home, flush it while you wash the boat. Same routine every time and it becomes second nature.

Laying It Up

For short breaks, flush, drain and tilt up. For a long lay up, run stabilised fuel through the system, change the engine and gear oil, fog the engine if the manual calls for it, grease every fitting and keep the battery charged. A cover keeps sun and bird mess off the cowl. The Suzuki DF350ATX2 for sale is covered here too.

Simple Fixes Before You Call a Mechanic

No crank: lanyard clipped on, lever in neutral, battery charged, terminals tight.

Hard starting: firm primer bulb, tank vent open, no water in the separator, fresh fuel. That is a big part of why people choose the Suzuki DF350ATX2 for sale.

Overheat alarm: stop, tilt up and look for a plastic bag or weed over the intake. Check the tell-tale stream when you restart.

Low top speed: check the prop for damage, check the mounting height and make sure the boat bottom is clean. Owners of the Suzuki DF350ATX2 for sale tell us the same thing again and again.

Rough running: old fuel and dirty filters cause most of it. Start there.

Carry These on Board

A spare kill cord, a spare prop with nut and washer, a fuel filter, a couple of spanners, a radio and a torch. Add a tow line and an anchor that holds. It sounds basic, but most bad days on the water start with something small. It is one of the reasons we keep the Suzuki DF350ATX2 for sale in stock.

Tips for a Repower

A repower is the best chance you will get to fix the things you cannot reach with a motor on the back. Check the transom, replace old fuel hoses and the primer bulb, clean or replace the tank pickup and fit a new water separating filter. Fresh fuel lines and clean fuel make a new motor happy from the first day.

Measure the transom height before ordering so the shaft length is right. It is the one mistake that is hard to fix later. You get all of that with the Suzuki DF350ATX2 for sale.

Coming From an Old Two Stroke

A lot of our buyers are replacing a two stroke that has done its time. The difference is bigger than most expect. No oil to mix or top up, no blue smoke at the dock, far less noise and a big drop in fuel use at cruise. The four stroke is heavier than an old two stroke of the same power, so check the capacity plate and how the boat sits once it is fitted. Most owners find the trade is well worth it after the first few trips.

Expect a different sound too. A four stroke is quieter and smoother, and some people keep looking back to check it is still running.

Mistakes We See Buyers Make

The most common one is the wrong shaft length. Measure the transom before ordering, not after the crate arrives. The second is under-propping, which lets the motor over rev and wastes fuel. The third is skipping the rigging list, then finding out the old controls or harness do not fit the new motor. And the last is ignoring the boat’s capacity plate. A motor heavier or more powerful than the hull is rated for is a real safety problem.

The First Year of Ownership

Year one is easy. Follow the break-in, get the first service done on time and keep a log of hours. Look at the prop and anodes now and then, and flush after every salt trip. Before winter or a long break, do a proper lay up. If you do those simple things, the motor will reward you with years of trouble free running.

Shipping and Delivery

The Suzuki DF350ATX2 for sale ships in its factory crate on a pallet. We book freight to your nearest port or airport, or to your door where that is possible. You get a written delivery quote before paying for shipping, then tracking and copies of the export documents once the crate leaves. If you already use a freight forwarder, we can hand it to them.

Warranty Notes

The Suzuki DF350ATX2 for sale comes with Suzuki factory warranty paperwork. Terms depend on your region and on how the motor is registered and used, so ask us about warranty in your country before you order. Keep receipts and service records and follow the service schedule.

What Comes in the Crate

• DF350ATX2 powerhead, midsection and gearcase
• Owner’s manual and warranty paperwork
• Standard Suzuki fittings from the factory

Controls, gauges, harnesses, propeller and steering depend on what we have in stock and are not always included. Ask before you order and we will tell you exactly what ships with your motor.

Before You Order the Suzuki DF350ATX2 for sale

• Measure your transom height to confirm the 25 inch shaft is right.
• Check your boat’s maximum rated horsepower and engine weight.
• Decide on rotation if you run more than one motor.
• Work out what controls, steering and gauges you need.
• Tell us your country so we can quote shipping.

If anything is unclear, ask. Ten minutes of questions now saves a lot of trouble once the crate lands.

Buying the Suzuki DF350ATX2 for sale From Us

Every motor we sell is new and the price is on this page. Before we ship, we give you a delivery quote for your country so you know the full cost. When you order we confirm stock, the exact model code and shaft length with you. Our refund and return policy and terms and conditions are on the site. You can read what other buyers say on our reviews page, learn more about us page, or go straight to the contact page.

Other Suzuki Motors to Compare

• All 350 HP Suzuki outboards
• Suzuki DF350ATX2 outboard motor (second listing)
• Suzuki DF350ATXW2, 25 inch shaft, white
• Suzuki DF350ATXX2, 30 inch shaft
• Suzuki DF350ATXXW2, 30 inch shaft, white
• Suzuki 300 HP outboards
• Suzuki 250 HP outboards
• All Suzuki outboards
• The full shop

Our blog has more on rigging and looking after outboards. Suzuki’s global site at globalsuzuki.com also shows the full worldwide marine line.

FAQ: Suzuki DF350ATX2 for sale

Is the Suzuki DF350ATX2 for sale new?

Yes. New, in the factory crate, with Suzuki paperwork.

What shaft length is the Suzuki DF350ATX2 for sale?

25 inch, the X shaft.

Is it standard or counter rotation?

Contra rotating dual propellers.

How heavy is the Suzuki DF350ATX2 for sale?

About 727 lb (330 kg).

What displacement is it?

4,390 cc (267.9 cu in), v6 (55 degree), dohc, 24 valves.

What controls does it use?

Drive by wire, Suzuki Precision Control.

What is the full throttle range?

5,700 to 6,300 rpm. Choose a prop that lands you in that range with a normal load.

Do you ship the Suzuki DF350ATX2 for sale to my country?

We ship worldwide. Send us your location and we will quote delivery.

Ready When You Are

The Suzuki DF350ATX2 for sale is in stock and ready to ship. If you are still deciding, send us your boat and how you use it. We would rather spend a few minutes getting it right than sell you the wrong motor.