Mercury Verado 300HP XL Outboard Motor WH

Description

The Mercury Verado 300HP XL Outboard Motor WH is a 300 hp Verado outboard built on Mercury’s 4.6 litre V8 Verado, with a 25 inch extra long shaft, standard (right hand) rotation and Digital Throttle and Shift (DTS), finished in Cold Fusion White. We have it for sale new with the Mercury factory warranty, and we ship it worldwide.

The Verado is Mercury’s premium line. It uses the same V8 powerhead family as the FourStroke but adds the Advanced MidSection for very low vibration, electro-hydraulic power steering built into the engine, and Digital Throttle and Shift as standard.

On this page:

• Why this engine
• This version explained
• Boats it suits
• Features
• Specifications
• Maintenance
• Alternatives
• Price and shipping
• FAQ

Why the Mercury Verado 300HP XL Outboard Motor WH

The difference between a Verado and a standard outboard shows up the moment you drive one. The steering is light and precise because the power steering is integrated into the engine, so there is no separate pump or heavy wheel. Shifting through DTS is smooth and silent. The Advanced MidSection moves the engine mounts aft and outward, which almost eliminates vibration at the helm, and a tuned, multi chamber air intake plus careful cowl sealing keep noise low.

The V8 Verado also brings some clever touches. Adaptive Speed Control holds the rpm you set, even as load or sea conditions change, so you don’t need to keep adjusting the throttle. Advanced Sound Control lets you switch between a very quiet exhaust and a deeper, sportier tone. On suitable twin and triple rigs, Joystick Piloting is available for docking.

This version of the Mercury Verado 300HP XL Outboard Motor WH explained

Shaft: XL means a 25 inch shaft. It is the most common length for offshore centre consoles, bay boats and twin engine rigs.

Rotation: This is a standard rotation engine, turning a right hand propeller. It is the one you want for a single engine boat, or as the standard side of a twin rig.

Controls: DTS uses electrical signals instead of cables, for smooth, light shifting and access to features such as single lever twin control.

Colour: Cold Fusion White. The engine underneath is the same as the black version; white suits white hulled boats and stays cooler in the sun.

Boats the Mercury Verado 300HP XL Outboard Motor WH suits

• Offshore centre consoles and express cruisers
• Premium bay boats and dual consoles
• Luxury pontoons
• Twin and triple engine rigs
• Owners upgrading from standard outboards who want a quieter, smoother boat

Always check your boat’s capacity plate for maximum horsepower and engine weight, and measure your transom before ordering. If you want a second opinion, send us the boat details and we’ll check it with you.

On the water

Turn the key and it is almost silent at idle. The steering feels light even at low speed, which makes docking easy. Open the throttle and the V8 pulls smoothly with no harsh vibration through the hull. At cruise you can talk at normal volume at the helm.

Buyer questions

“Should I run one engine or two?”

It depends on the boat’s rating and how far offshore you go. Many boats in this range run a single engine; bigger offshore boats often run twins for speed and for the peace of mind of a second engine. If you go twin, pair a standard rotation engine with a counter rotation one.

“What fuel does it need?”

Regular unleaded, 87 octane (90 RON) minimum, with no more than 10% ethanol.

“What else do I need to buy?”

Controls to match (DTS), a steering system if not built in, gauges or a SmartCraft display, batteries and cables, a fuel filter and a propeller. We can quote these with the engine.

Mercury Verado 300HP XL Outboard Motor WH features

• 4.6 litre V8 Verado, 32 valve DOHC
• Advanced MidSection for very low vibration
• Integrated electro-hydraulic power steering
• Adaptive Speed Control
• Advanced Sound Control exhaust
• Power trim and tilt
• SmartStart electric start
• SmartCraft compatible, Joystick Piloting capable on suitable rigs
• Engine Guardian protection
• 25 inch XL shaft
• Standard rotation
• Digital Throttle and Shift
• Cold Fusion White finish
• Mercury Marine factory warranty

Mercury Verado 300HP XL Outboard Motor WH specifications

For the manufacturer’s own overview of the range, see Mercury’s Verado outboards page. Mercury updates details between model years, so if one spec really matters to your purchase, ask us and we’ll confirm it on the exact unit we ship.

Maintaining the Mercury Verado 300HP XL Outboard Motor WH

Oil: Mercury 25W-40 four stroke oil, checked before each trip and changed with the filter every 100 hours or yearly.

Fuel: fresh fuel, a water separating filter and stabiliser when the boat will sit.

Gear case: change the lube yearly and check for water or metal.

Cooling: flush with fresh water after salt and replace the water pump impeller on schedule.

Anodes: check them every season and replace when half worn.

If you’re newer to boating, the US Coast Guard boating safety site is worth a read. It’s written for US boaters, but the advice on kill cords, life jackets, fuel handling and navigation rules applies wherever you are in the world.

Break in and the first service

A new Mercury Verado 300HP XL Outboard Motor WH benefits from a gentle start to its life. For the first couple of hours, vary the throttle, avoid long periods at full throttle or at one steady speed, and don’t idle for long stretches. After that, you can use it normally, but keep an eye on it for the first ten hours or so.

The first service, usually at around 20 hours, is an important one. It is when the oil and filter are changed for the first time, the gear lube is checked and the technician looks over the whole installation. Keep the receipts; they matter for warranty.

Choosing the right shaft length

Shaft length has to match your transom. Mercury uses L for 20 inches, XL for 25 inches and XXL for 30 inches. Measure straight down the centre of the transom, from the top where the engine bracket sits to the bottom of the hull. Most single engine bass and bay boats use 20 or 25 inches; most offshore centre consoles with twin or triple engines use 25 or 30 inches. Too short and the prop ventilates and the water intakes run dry; too long and you add drag and lose speed.

If you are replacing an engine, the old one’s model code usually tells you what you need. If you are not sure the Mercury Verado 300HP XL Outboard Motor WH is the right length for your boat, send us the transom measurement and the boat model and we’ll check it.

Running twins and counter rotation

A lot of boats in this power range run two engines side by side. When they do, one engine normally turns its propeller the standard way (right hand) and the other turns it the opposite way (left hand, or counter rotation). That cancels out the steering torque you would feel with two props spinning the same way, so the boat tracks straight and handles evenly at every speed.

Mercury marks counter rotation engines with a C in the model code, so a CXL is a 25 inch shaft counter rotation engine, and an XL is the matching standard rotation engine. If you are building a twin rig with the Mercury Verado 300HP XL Outboard Motor WH, pair it with its opposite rotation twin, and match shaft length, controls and colour. We can supply matched pairs and help with the rigging list.

Digital Throttle and Shift, explained

Digital Throttle and Shift, or DTS, replaces the old push-pull cables between the helm and the engine with electrical signals. When you move the lever, the Mercury Verado 300HP XL Outboard Motor WH gets a digital command and the engine’s own actuators do the work. The result is shifting that feels smooth and light every time, with no clunk into gear and no stiff lever after a season of salt spray.

DTS also opens the door to the useful SmartCraft features: one lever control of twin engines, docking and trolling modes, synchronised engine speeds and, on suitable boats, joystick piloting. The trade-off is that DTS needs matching DTS controls and wiring at the helm. If you are replacing a mechanical rig, budget for the new control box and harnesses, or ask us to quote the full package.

Cold Fusion White or Phantom Black

Mercury sells its big outboards in two main colours: Phantom Black and Cold Fusion White. The WH in this listing’s name means the Mercury Verado 300HP XL Outboard Motor WH comes in white. Many owners of white hulled offshore boats prefer it because it matches the boat and stays cooler in strong sun. The engine underneath is identical, so it is purely a matter of looks.

If you are running twins, order both engines in the same colour. If you want the black version, we list that as a separate product.

SmartCraft and engine information

The Mercury Verado 300HP XL Outboard Motor WH is compatible with Mercury SmartCraft, the digital network that lets the engine talk to gauges and displays at the helm. With a SmartCraft gauge or a compatible multifunction display, you can see fuel flow, fuel economy, range, engine temperature, oil pressure, trim angle and battery voltage, and get warnings in plain language rather than a mystery beep.

That information is useful day to day, and it is even more useful for spotting a small problem before it becomes an expensive one. Mercury technicians can also read the engine’s stored data when it is serviced, which makes diagnosis quicker and more accurate.

What rigging an engine this size involves

A Mercury Verado 300HP XL Outboard Motor WH is not a bolt-on-and-go motor. Rigging normally includes mounting and bolting the engine to the transom or a jack plate, connecting controls, fitting a steering system rated for the power, installing gauges or a SmartCraft display, wiring the battery with properly sized cables, connecting the fuel system with a water separating filter, and choosing and fitting a propeller. On twin installs, the two engines also need a tie bar and matched set-up.

Most buyers have a local marine technician do the installation, and we recommend that. We’re happy to put together the parts list for your boat, or to supply the engine alone if your installer is sourcing the rest.

Getting the propeller right

The propeller is the part of your Mercury Verado 300HP XL Outboard Motor WH that actually turns engine power into movement, and the right one makes a big difference. The goal is simple: with your boat loaded the way you normally use it, the engine should reach the top of its recommended full throttle rpm range. If it can’t get there, the prop pitch is too high and the engine is labouring. If it goes past the top of the range, the pitch is too low and the engine is over revving.

As a rough guide, each inch of pitch changes full throttle rpm by around 150 to 200 rpm. Heavier loads and bigger boats usually want less pitch. Lighter, faster boats can take more. If you mainly carry heavy loads or tow, a lower pitch prop helps. If you run light and want top speed, a higher pitch may suit. Tell us about your boat and how you use it, and we’ll help you choose.

Offshore running and fuel planning

Big outboards are built to run for hours at cruise, often far from shore. With a Mercury Verado 300HP XL Outboard Motor WH, good planning matters as much as horsepower. Know your boat’s fuel burn at cruise, keep a reserve of at least a third of your tank, and check the weather and sea state before heading out. A fuel flow gauge takes the guesswork out of range.

Carry a spare fuel filter, a spare prop and hardware, a basic tool kit and a way to call for help. On twin engine boats, practise running on one engine so you know how the boat behaves if you ever have to.

Repowering with a Mercury Verado 300HP XL Outboard Motor WH

Many of these engines go onto boats that already have a hull someone loves and an engine that has had its day. A repower can give an older boat a new lease of life: better fuel economy, quieter running, easier starting and modern electronics. Before you order, check the boat’s capacity plate for maximum horsepower and engine weight, measure the transom for shaft length, and look at the condition of the transom itself. A soft transom has to be fixed first.

You may also need new controls, harnesses, gauges and steering to match the new engine. We can help work out the full list so you know the total cost before you commit.

What electronic fuel injection means for you

The Mercury Verado 300HP XL Outboard Motor WH uses electronic fuel injection, or EFI, instead of a carburetor. In plain terms, a small computer measures things like air temperature and engine load and injects exactly the right amount of fuel every time. You don’t need to fiddle with a choke. It starts easily whether it’s a frosty morning or a hot afternoon, it idles smoothly, and it responds cleanly when you open the throttle.

EFI is also less fussy about sitting. Carburetors have tiny jets and a fuel bowl that gum up when old fuel evaporates inside them. A sealed injection system is much more tolerant, although fresh fuel is still the best policy. And because the fuel is metered precisely, EFI motors tend to be more economical, which means more time on the water per tank.

Mercury’s small EFI engines can even start and run without a battery on manual start models: the pull of the cord generates enough power for the fuel injection system to fire. That’s a clever bit of engineering, and it means you get the benefits of EFI without having to carry a battery if you don’t want to.

Using your motor in saltwater

The Mercury Verado 300HP XL Outboard Motor WH is rated for saltwater use, and Mercury builds its outboards with corrosion resistance in mind. Still, salt is hard on any engine, and a few habits make a big difference to how long your motor lasts.

• Flush the cooling system with fresh water after every saltwater trip, using a flushing attachment or muffs as the owner’s manual describes.
• Rinse the outside of the motor with fresh water, and wipe it down.
• Check the sacrificial anodes regularly and replace them when they’re about half worn. They protect the metal parts of your motor from corrosion.
• Tilt the motor out of the water when the boat is moored, if possible.
• Spray exposed metal parts under the cowl with a corrosion inhibitor from time to time.

Owners who follow those simple steps routinely get many years of service from their motors, even in hard saltwater use.

Why buy from us

We deal in outboard motors every day, and we would rather give you a straight answer than make a quick sale. If you are not sure the Mercury Verado 300HP XL Outboard Motor WH is the right motor for your boat, message us with the make, model and length of the boat, how you use it and where you boat. We will tell you honestly whether it is a good match or whether something else would suit you better.

Every motor is packed carefully for the journey, and we keep you updated from dispatch to delivery with tracking. We ship worldwide, and we are happy to explain in advance what to expect with import duties and local taxes in your country, so there are no surprises when it arrives.

After you buy, we are still here. If you have questions about setup, break in or maintenance, just ask.

New versus used: why buying new makes sense

We get asked this a lot. A used outboard can look like a bargain, but you rarely know its real history: how it was stored, whether it sat with stale fuel, whether it was flushed after saltwater, or whether it was run hard without oil changes. Problems like a worn water pump, a corroded cooling system or a damaged gearcase don’t always show up on a quick test.

A new Mercury Verado 300HP XL Outboard Motor WH comes with a known history, which is none, and a full Mercury factory warranty that starts on the day you buy it. You get the latest version of the engine, fresh seals and gaskets, and years of trouble free running ahead with basic care. Over the life of the motor, that peace of mind is usually worth far more than the saving on a used one. And when the time comes to sell or trade, a well kept Mercury with a service record holds its value well.

Paperwork, warranty and keeping records

When your Mercury Verado 300HP XL Outboard Motor WH arrives, write down the serial number and keep it with your invoice. Take a photo of the serial plate on your phone too. If you ever need warranty work, a dealer will ask for both, and it makes the process much quicker. The Mercury factory warranty starts from the date of purchase, so hang on to that paperwork.

It is also worth keeping a simple log: date, engine hours if you have them, oil changes, gear lube changes, impeller replacements and anything unusual you noticed. It takes seconds after each service, and it adds real value if you ever sell the boat. Buyers pay more for an engine with a clear service history, and it helps any mechanic you work with understand the motor quickly.

Check your boat insurance as well. Many policies have specific requirements for outboard security, such as a lock on the clamps or bracket, and some ask for the serial number. Better to sort that out on day one than find out after a problem.

Alternatives to the Mercury Verado 300HP XL Outboard Motor WH

Other versions we sell: Mercury Verado 300HP CL Outboard Motor, Mercury Verado 300HP CL Outboard Motor WH, Mercury Verado 300HP CXL Outboard Motor, Mercury Verado 300HP CXL Outboard Motor WH, Mercury Verado 300HP CXXL Outboard Motor, Mercury Verado 300HP CXXL Outboard Motor WH, Mercury Verado 300HP L Outboard Motor, Mercury Verado 300HP L Outboard Motor WH, Mercury Verado 300HP XL Outboard Motor, Mercury Verado 300HP XXL Outboard Motor.

More power: the Mercury Verado 350HP XL. A simpler, lower cost option with the same V8: the Mercury 300HP XL Four Stroke.

See the main Mercury outboard motors category and our full outboard shop.

Mercury Verado 300HP XL Outboard Motor WH for sale: price and worldwide shipping

The current price of the Mercury Verado 300HP XL Outboard Motor WH is shown at the top of this page. You can add it to your cart and check out straight away, or if you’d rather talk to a person first, send us a message through our contact page and we’ll come back to you with a full delivered price to your country.

What you get

• Mercury Verado 300HP XL Outboard Motor WH, new
• Owner's manual
• Mercury Marine factory warranty from the date of purchase

Controls, rigging, gauges and propeller can be quoted to suit your boat.

Shipping worldwide

We ship to buyers all over the world. Every motor is packed securely for the journey and sent by courier, freight or sea depending on its size and where you are, with tracking from dispatch to delivery. Import duty and local taxes depend on your country, and we’re happy to explain what to expect before you pay so there are no surprises.

Buying with confidence

Have a read of our refund and return policy, see what other boat owners have said on our customer reviews page, and find out more about who we are on the about page.

Mercury Verado 300HP XL Outboard Motor WH FAQ

What shaft length is the Mercury Verado 300HP XL Outboard Motor WH?

25 inches (XL).

Which way does it rotate?

Standard (right hand).

What controls does it use?

Digital Throttle and Shift (DTS).

Do you ship worldwide?

Yes. Contact us for a delivered quote to your country.

Order your Mercury Verado 300HP XL Outboard Motor WH

Verado smoothness and V8 torque in one package. Add the Mercury Verado 300HP XL Outboard Motor WH to your cart now, or send us a question first. You can also compare it with the rest of our outboard motors for sale.