Suzuki 350 HP DF350ATXX2 Outboard Motor

Description

We have the Suzuki DF350ATXX2 for sale new in the factory crate. It is Suzuki’s 350 horsepower V6 dual prop four stroke with a 30 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.

This is a new motor in the factory crate, sold by us and shipped to your country. Before you pay for freight you get a written delivery quote, so there are no surprises later. We are happy to answer questions about the Suzuki DF350ATXX2 for sale by email or chat.

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 DF350ATXX2 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 DF350ATXX2 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. XX is the ultra long shaft, for a 30 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. The Suzuki DF350ATXX2 for sale handles this well.

Why the Suzuki DF350ATXX2 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. This is where the Suzuki DF350ATXX2 for sale earns its keep.

Suzuki Precision Control on the Suzuki DF350ATXX2 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 DF350ATXX2 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 DF350ATXX2 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 DF350ATXX2 for sale Feels on the Water

At idle the Suzuki DF350ATXX2 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 DF350ATXX2 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. Plenty of buyers send us their boat details before ordering the Suzuki DF350ATXX2 for sale, and we like that.

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 DF350ATXX2 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. Keep that in mind when you set up the Suzuki DF350ATXX2 for sale.

Transom Height and Shaft Length

The 30 inch ultra long shaft is for big offshore boats with tall transoms or setback brackets. It keeps the prop deep in the water when the stern lifts in a sea. Measure from the top of the transom or bracket to the bottom of the hull before ordering. If you measure close to 25 inches, you want the X shaft instead.

Suzuki DF350ATXX2 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 DF350ATXX2 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.

Who Buys the Suzuki DF350ATXX2 for sale From Us

Most of our buyers are owners who want a reliable motor and a fair price without dealer games. Next come fishing and charter operators repowering a working boat, and then boat builders and dealers who need stock to rig new hulls. The feedback after a season is nearly always the same: it starts every time, it is easy on fuel compared with what they had, and it has needed nothing beyond normal servicing.

Living With the Suzuki DF350ATXX2 for sale

Owning this motor is mostly uneventful, and that is the point. Turn the key and it starts. Run your day, flush it, tilt it up and go home. With fuel injection there is no carburettor to gum up if the boat sits for a few weeks, and it behaves the same on a cold morning as on a hot afternoon.

Breaking In the Suzuki DF350ATXX2 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. That applies to the Suzuki DF350ATXX2 for sale as much as any motor.

Maintenance on the Suzuki DF350ATXX2 for sale

Servicing a Suzuki V6 is straightforward. Most owners handle the basics and let a mechanic do the bigger jobs.

• Flush with fresh water after every trip in salt or muddy water.
• Change engine oil and filter at the hours in the manual, or once a year.
• Change the gear oil every season. Milky oil means water is getting in.
• Replace anodes when they are about half gone.
• Replace the water pump impeller every couple of seasons, sooner in sandy water.
• Change the fuel filters and keep fuel fresh if the boat sits.
• Check plugs, the trim fluid and the thermostats at the service intervals.

The motor warns you about overheating and low oil pressure, and Suzuki fits an over-rev limiter. Treat it well and it will put in many thousands of hours.

Is 350 Horsepower Right for Your Boat?

Start with the capacity plate on your boat. It gives the maximum horsepower and the maximum weight the transom is built for. Most owners do well with a motor at or near the maximum rating, because a motor that is not working flat out lasts longer and uses less fuel at cruise. If your boat is rated well below 350 HP, do not go over the plate. If you are unsure, send us the make, model and length and we will check it for you. If you are unsure, send us a photo of the transom and we will check the Suzuki DF350ATXX2 for sale is the right fit.

What It Costs to Run

Lean Burn control and the high compression ratio help the Suzuki DF350ATXX2 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 DF350ATXX2 for sale can be done by any decent marine mechanic or by a handy owner.

Fuel Quality Matters

Modern fuel injected motors are very reliable, but they do not like bad fuel. Buy from busy fuel stations, keep the tank vent clean and fit a good water separating filter between the tank and the motor. If your fuel contains ethanol, do not let it sit for months. Ethanol pulls in water, and water in fuel is the most common cause of rough running we hear about.

A fuel stabiliser in the tank before a lay up is cheap insurance. Many repeat customers come back for a second Suzuki DF350ATXX2 for sale on another boat.

Choosing a Propeller for the Suzuki DF350ATXX2 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.

Low Speed and Trolling

Four strokes are much better at low speed than old two strokes. They idle cleanly, do not load up with oil and do not foul plugs after an hour of trolling. If you troll a lot, ask about Suzuki Troll Mode, which lets you set trolling speed in small steps with a switch. Drift socks and a trolling plate are also cheap ways to slow a boat down further. The Suzuki DF350ATXX2 for sale is covered here too.

Gauges and Electronics

You can run simple analogue gauges or Suzuki’s multi-function digital gauges, which show rpm, trim, fuel flow, hours and warnings on one screen. Many owners also network the motor into their chartplotter. Keep engine wiring separate from accessory wiring, fuse everything and use marine grade connectors.

Getting the Electrics Right

A strong battery and clean connections are half the battle. Choose a marine cranking battery that meets or beats the motor’s requirement, crimp and heat shrink every connection and keep the battery secured in a box. A battery switch and a second battery for the electronics make long days much less stressful. That is a big part of why people choose the Suzuki DF350ATXX2 for sale.

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.

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. Owners of the Suzuki DF350ATXX2 for sale tell us the same thing again and again.

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.

Back home, flush it while you wash the boat. Same routine every time and it becomes second nature. It is one of the reasons we keep the Suzuki DF350ATXX2 for sale in stock.

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.

Simple Fixes Before You Call a Mechanic

No crank: lanyard clipped on, lever in neutral, battery charged, terminals tight. You get all of that with the Suzuki DF350ATXX2 for sale.

Hard starting: firm primer bulb, tank vent open, no water in the separator, fresh fuel.

Overheat alarm: stop, tilt up and look for a plastic bag or weed over the intake. Check the tell-tale stream when you restart. Ask us if you want photos of the Suzuki DF350ATXX2 for sale before it ships.

Low top speed: check the prop for damage, check the mounting height and make sure the boat bottom is clean.

Rough running: old fuel and dirty filters cause most of it. Start there. We are happy to answer questions about the Suzuki DF350ATXX2 for sale by email or chat.

Safety Gear Worth Carrying

Clip the kill switch lanyard on every time you run. Carry a spare lanyard, a basic tool kit, a spare prop and prop nut, a spare fuel filter, a VHF radio and a way to call for help. None of it costs much, and any of it can save a day on the water.

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. The Suzuki DF350ATXX2 for sale handles this well.

Measure the transom height before ordering so the shaft length is right. It is the one mistake that is hard to fix later.

Two Stroke to Four Stroke: What Changes

If your old motor was a two stroke, a few things will feel new. You will stop buying two stroke oil. The motor will idle cleanly without smoke. Fuel bills drop, often a lot, especially at cruise. You will also notice the extra weight on the transom, so set the trim and mounting height carefully on the first runs. This is where the Suzuki DF350ATXX2 for sale earns its keep.

Service changes too. Instead of plugs and oil injection checks, you will be changing engine oil and filters like a car. It is simple, and most owners prefer it.

Avoid These Common Errors

Ordering the wrong shaft length, guessing the prop, reusing worn out controls and going over the boat’s power or weight rating. Those four mistakes cause most of the post purchase headaches we hear about. All of them are avoided with a tape measure, a look at the capacity plate and a short chat with us before you pay. Plenty of buyers send us their boat details before ordering the Suzuki DF350ATXX2 for sale, and we like that.

What a Typical First Season Looks Like

Most owners do the break-in over the first few weekends, then the first service. After that it is simply using the boat: run it, flush it, tilt it up. Around the middle of the season it is worth checking the anodes and the prop for dings. At the end of the season comes the lay up service with oil, gear oil and a grease. That is honestly all most people need to do in year one.

How Delivery Works

We ship worldwide. Once you confirm the order, the Suzuki DF350ATXX2 for sale is strapped to a pallet in its original crate and booked with a freight company we trust, or with your own forwarder. You get the paperwork your customs office asks for and a tracking number so you can follow it.

About the Warranty

Suzuki warranty terms vary by country and by recreational or commercial use. We will tell you what applies where you are. Whatever the terms, keep the paperwork and a simple service log. It makes any claim much easier. Keep that in mind when you set up the Suzuki DF350ATXX2 for sale.

In the Box

You get the complete DF350ATXX2 motor, the owner’s manual, warranty papers and the standard factory fittings. Rigging parts such as controls, harnesses, gauges, steering and the prop are quoted separately unless we agree otherwise. We always confirm the list in writing before shipping.

A Short Checklist Before Buying

• Transom height measured and matched to the 30 inch shaft.
• Boat capacity plate checked for horsepower and weight.
• Rotation decided for twin or triple setups.
• Rigging list ready: controls, steering, harness, gauges, prop.
• Delivery address and nearest port sent to us.

Send us that list and we will come back with a full price to your door.

Ordering Is Simple

Add the Suzuki DF350ATXX2 for sale to your cart or message us with your boat details. We confirm the model, shaft, colour and rotation, then send a delivery quote. Once you approve it, we ship. Read our refund and return policy and terms and conditions first, and look at the reviews page if you want to hear from other buyers. Questions about us are answered on the about us page, and the contact page reaches a real person.

Other Suzuki Motors to Compare

• All 350 HP Suzuki outboards
• Suzuki DF350ATX2, 25 inch shaft
• Suzuki DF350ATXW2, 25 inch shaft, white
• Suzuki DF350ATXX2 outboard motor (second listing)
• 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 DF350ATXX2 for sale

Is the Suzuki DF350ATXX2 for sale new?

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

What shaft length is the Suzuki DF350ATXX2 for sale?

30 inch, the XX shaft.

Is it standard or counter rotation?

Contra rotating dual propellers.

How heavy is the Suzuki DF350ATXX2 for sale?

About 747 lb (339 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 DF350ATXX2 for sale to my country?

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

Final Word

If you want a proven 350 horsepower Suzuki that does the job without fuss, the Suzuki DF350ATXX2 for sale is a safe choice. Order it today, or send us your boat details first and we will help make sure it is the right fit.