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Mercury Diesel, Inboard & Sterndrive Engines
Mercury Diesel, Inboard & Sterndrive Engines
Love your boat? Give it a new lease on life.
A new engine can transform the boat you already know and love.
Mercury Bay Marine specialises in Mercury Diesel, MerCruiser inboard and sterndrive engines and repowers, helping boat owners achieve better reliability, performance, efficiency and confidence on the water.
As a Mercury dealer and service centre in Whitianga, Coromandel, we'll help you find the right engine and drive package for your boat, then take care of the installation, rigging, setup and ongoing servicing.
Whether you're replacing an ageing diesel, upgrading an existing MerCruiser or planning a complete marine engine repower, talk to our team before deciding what's right for your boat.
KEEP THE BOAT. UPGRADE THE POWER.
Inboard Engines
MERCURY DIESEL ON SALE
SAVE $3,700 ON SELECTED MERCURY DIESEL PACKAGES
Been thinking about a diesel repower?
Now's a great time to make it happen.
For a limited time, save $3,700 on selected Mercury Diesel V6 3.0L and QSD 4.2L repower packages.
Offer ends 30 December 2026.
Is It Time to Repower Your Boat?
REPOWER
Is It Time to Repower Your Boat?
A tired engine doesn't necessarily mean it's time for a new boat.
If you still love your hull, layout and the way your boat works for you, repowering can give it a whole new lease on life.
You may be considering a repower because your existing engine is becoming unreliable, repairs are becoming more frequent, parts are getting harder to source, you'd like better performance or efficiency, or you simply want greater confidence every time you head out on the water.
That's where good advice matters.
We'll look at your existing setup, your boat, how you use it and what you want to achieve before recommending the right repower options.
CALL US TO SEE WHICH MERCURY ENGINE IS RIGHT FOR YOUR BOAT.
Powerful, efficient and built for life on the water.
Mercury Diesel Engines
Mercury Diesel engines deliver strong marine performance in compact, lightweight packages, with modern fuel injection, turbocharging and service-friendly design.
With options available for a wide range of recreational boats and applications, Mercury Diesel power can be paired with sterndrive, inboard and other drive configurations.
Not sure which Mercury Diesel engine is right for your boat? That's where we come in. Matching the right engine and drive to the boat is just as important as choosing the horsepower.
Then I'd make four small engine tiles/cards underneath rather than one big paragraph.
ASK US ABOUT MERCURY DIESEL
MERCURY DIESEL OPTIONS
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Mercury Diesel 2.0L
115–170hp
Compact diesel power for a wide range of recreational marine applications.
Mercury Diesel 6.7L
480–550hp
High-output Mercury Diesel power for larger vessels and high-performance applications.
Mercury Diesel 3.0L
150–270hp
Compact, responsive diesel performance with an excellent power-to-weight ratio.
Mercury Diesel 4.2L
270–350hp
Serious diesel performance for larger recreational boats and demanding applications.
MERCRUISER
Mercury MerCruiser Sterndrive & Inboard Engines
Purpose-built marine power.
Mercury MerCruiser sterndrive and inboard engines deliver smooth, responsive marine performance with modern Mercury technology.
Available across a range of horsepower and configurations, MerCruiser power is suited to everything from family boating and cruising through to larger and higher-performance applications.
Modern MerCruiser systems can also integrate with Mercury SmartCraft technology, giving you greater control and information at the helm.
Whether you're replacing an existing MerCruiser or considering a different power package, we'll help determine the right engine and drive combination for your boat.
ASK US ABOUT MERCRUISER
Not Sure What Engine Your Boat Needs?
That's our job.
Choosing the right repower isn't simply a matter of matching horsepower.
The right setup depends on your boat, existing installation, hull, weight, drive, gearing, propeller, how you use the boat and what you want to improve.
Bring us the details of your boat and existing engine and we'll help you work through the options.
Our goal isn't simply to sell you an engine — it's to get the right power package for your boat.
TALK TO A MARINE TECHNICIAN
HOW DOES IT WORK?
The Mercury Bay Marine Repower Process
From your old engine to getting you back on the water.
1. Tell Us About Your Boat
Tell us about your boat, existing engine, how you use it and what you'd like to improve.
2. Explore Your Options
We'll assess suitable Mercury engine, drive, controls, rigging and installation options for your boat.
3. Professional Installation
Our marine technicians take care of the installation, rigging, controls, setup and associated work required for your new power package.
4. Back on the Water
Once everything is set up, we'll get you back on the water and remain here for ongoing Mercury servicing, maintenance and support.
START YOUR REPOWER
Why Repower With Mercury Bay Marine?
A repower is a significant investment. Having the right people behind it matters.
Mercury Dealer & Service Centre
Mercury engines, genuine parts, diagnostics, servicing and ongoing technical support.
Experienced Marine Technicians
Our technicians work on marine engines and marine systems every day.
Complete Repower Service
From engine and drive selection through to installation, rigging, controls, gauges and final setup.
Local Boating Knowledge
Based in Whitianga and supporting boat owners throughout the Coromandel and beyond.
Support After Installation
We're here to look after your engine long after your repower is complete.
Recent Mercury Repowers
Real boats. Real re-powers. Done right here in Whitianga.
See how a new Mercury power package can transform an existing boat.
From replacing ageing engines to improving performance, reliability and the overall boating experience, take a look at some of the repowers completed by the Mercury Bay Marine team.
OLD POWER → NEW MERCURY POWER → BACK ON THE WATER