Suzuki 300 HP DF300APX2 Outboard Motor

Description

We have the Suzuki DF300APX2 for sale new in the factory crate. It is Suzuki’s 300 horsepower V6 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. Plenty of buyers send us their boat details before ordering the Suzuki DF300APX2 for sale, and we like that.

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 DF300APX2 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 DF300AP page on Suzuki Marine if you want to compare models side by side.

What the Model Code on the Suzuki DF300APX2 for sale Means

Suzuki model codes look confusing until someone explains them once. DF is Suzuki’s four stroke prefix and 300 is the horsepower. The A marks the A generation of this engine. The P stands for Suzuki Precision Control, the drive by wire system, and on this engine it comes with Selective Rotation. 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. Keep that in mind when you set up the Suzuki DF300APX2 for sale.

What Sets the Suzuki DF300APX2 for sale Apart

The DF300AP has been Suzuki’s flagship single prop V6 for years. The block is a 4.0 litre V6 with an offset driveshaft, which puts the crankshaft ahead of the driveshaft and moves weight forward. That keeps the motor compact on the transom and helps it run smoother.

The headline feature is Suzuki Selective Rotation. The same lower unit can run standard or counter rotation. You choose the direction when the motor is rigged, with a simple setting rather than a different gearcase. For twin rigs that means you do not need to hunt for a matched left hand motor, and if you ever need a spare, one motor covers both sides.

Suzuki also cools the fuel before it goes into the engine. Cooler fuel is denser, which helps power and economy. Add Lean Burn control and a two-way water inlet that keeps cooling water flowing in shallow or weedy spots, and you have a motor that is easy to live with day after day. That applies to the Suzuki DF300APX2 for sale as much as any motor.

Suzuki Selective Rotation, Explained

On the Suzuki DF300APX2 for sale the propeller direction is selected electronically when the motor is set up. Run it standard rotation on a single engine boat, or set one motor to counter rotation for a twin rig so the props turn in opposite directions and the boat tracks straight. You still need the right hand or left hand propeller to match, but the motor itself is the same. It is one of the most practical ideas Suzuki has had.

Drive by Wire Controls

The Suzuki DF300APX2 for sale uses Suzuki Precision Control, a fly by wire system. The helm talks to the motor electronically, so shifts are silky and the throttle is exact. You will need Suzuki digital controls, harnesses and a compatible gauge. We can quote a full rigging package with the motor.

Boats That Suit the Suzuki DF300APX2 for sale

Offshore centre consoles from 25 to 35 feet

A single DF300AP suits many 25 to 27 foot boats. Twins are the common choice from about 28 to 35 feet.

Walkarounds and cabin boats

Heavier hulls with a cabin, a head and a lot of tackle need torque at cruise. The Suzuki DF300APX2 for sale gives that without strain.

Bay boats and big flats boats

On the L shaft version, high performance bay boats get strong holeshot and a good top end.

Charter and work boats

Long hours are normal for charter skippers, and the 4.0 litre block is built for that kind of duty.

How the Suzuki DF300APX2 for sale Feels on the Water

Drive by wire shifting makes the Suzuki DF300APX2 for sale feel smooth and calm at the dock. The throttle is precise, so slow manoeuvres in a crowded marina are easy.

Out of the hole it pulls hard, and once the boat is on plane it settles into a steady cruise with plenty left in reserve. Owners often say the motor feels like it is loafing at speeds where older engines were working hard.

Single or Twin Installs

On a single engine boat, set the Suzuki DF300APX2 for sale to standard rotation and fit a right hand prop. For twins, order two of the same model, set one to counter rotation at rigging time and fit a left hand prop on that side. There is no separate Z model to hunt for.

Tell us when you order a pair and we will match the two motors so serial numbers and paperwork line up. If you are unsure, send us a photo of the transom and we will check the Suzuki DF300APX2 for sale is the right fit.

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 DF300APX2 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. Many repeat customers come back for a second Suzuki DF300APX2 for sale on another boat.

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 DF300APX2 for sale or the DF350A?

If your boat is rated for 300 and runs well with a single prop, the Suzuki DF300APX2 for sale is usually the better buy. It is lighter than the DF350A, easier to prop, and Selective Rotation keeps twin rigs simple.

The DF350A only pulls ahead on very heavy boats or rigs of three and four motors where the dual prop grip pays off. For everything else, the 300 is the sweet spot. The Suzuki DF300APX2 for sale is covered here too.

Who Buys the Suzuki DF300APX2 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 DF300APX2 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 DF300APX2 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.

Maintenance on the Suzuki DF300APX2 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. That is a big part of why people choose the Suzuki DF300APX2 for sale.

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 300 HP, ask us and we will point you to a better match.

What It Costs to Run

Lean Burn control, fuel cooling and the 2.08:1 gearing help the Suzuki DF300APX2 for sale cruise efficiently. We do not invent burn figures because hull, load and props change everything.

Servicing is not expensive either. Suzuki parts are widely stocked, and most routine jobs on the Suzuki DF300APX2 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. Owners of the Suzuki DF300APX2 for sale tell us the same thing again and again.

A fuel stabiliser in the tank before a lay up is cheap insurance.

Choosing a Propeller for the Suzuki DF300APX2 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 17 to 27.5 inch pitch range 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. It is one of the reasons we keep the Suzuki DF300APX2 for sale in stock.

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.

Instruments for the Suzuki DF300APX2 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. You get all of that with the Suzuki DF300APX2 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. Ask us if you want photos of the Suzuki DF300APX2 for sale before it ships.

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. We are happy to answer questions about the Suzuki DF300APX2 for sale by email or chat.

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. The Suzuki DF300APX2 for sale handles this well.

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. This is where the Suzuki DF300APX2 for sale earns its keep.

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. Plenty of buyers send us their boat details before ordering the Suzuki DF300APX2 for sale, and we like that.

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.

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. Keep that in mind when you set up the Suzuki DF300APX2 for sale.

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. That applies to the Suzuki DF300APX2 for sale as much as any motor.

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.

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.

How Delivery Works

We ship worldwide. Once you confirm the order, the Suzuki DF300APX2 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.

In the Box

You get the complete DF300APX2 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 25 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.

Buying the Suzuki DF300APX2 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 300 HP Suzuki outboards
• Suzuki DF300APL2, 20 inch shaft, Selective Rotation
• Suzuki DF300APLW2, 20 inch shaft, white, Selective Rotation
• Suzuki DF300APX2 outboard motor (second listing)
• Suzuki DF300APXW2, 25 inch shaft, white, Selective Rotation
• Suzuki DF300APXX2, 30 inch shaft, Selective Rotation
• Suzuki DF300APXXW2, 30 inch shaft, white, Selective Rotation
• Suzuki 350 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 DF300APX2 for sale

Is the Suzuki DF300APX2 for sale new?

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

What shaft length is the Suzuki DF300APX2 for sale?

25 inch, the X shaft.

Is it standard or counter rotation?

Suzuki Selective Rotation (standard or counter).

How heavy is the Suzuki DF300APX2 for sale?

About 639 lb (290 kg).

What displacement is it?

4,028 cc (245.6 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 DF300APX2 for sale to my country?

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

Final Word

If you want a proven 300 horsepower Suzuki that does the job without fuss, the Suzuki DF300APX2 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.