Used Mercury 90hp Optimax Outboard for Sale in Australia – Direct Injection Power, Efficiency & Proven Reliability
If you’re searching for a Used Mercury 90hp Optimax Outboard for sale in Australia, you’re looking at a high-performance engine that combines the power of a 2-stroke with the efficiency of modern fuel injection technology. The Mercury Optimax range is well-known among Australian boaters for its strong acceleration, fuel efficiency, and dependable operation—making the 90hp model a standout choice for both recreational and commercial use.
Whether you’re fishing offshore, cruising coastal waters, or working inland waterways, the 90hp Optimax delivers the performance and efficiency needed for Australian conditions.
Why Choose a Used Mercury 90hp Optimax Outboard Motor?
Buying a used Mercury 90hp Optimax outboard motor in Australia is a great option for those who want powerful performance with improved fuel efficiency over traditional 2-stroke engines. Used Mercury 90hp Optimax Outboard for Sale
Key Benefits:
- Direct fuel injection for better efficiency and performance
- Strong acceleration and torque
- Lightweight compared to many 4-stroke engines
- Proven Mercury Optimax reliability
- Lower fuel consumption than older 2-strokes
Key Features of Mercury 90hp Optimax Outboard Motor
The Mercury 90hp Optimax is designed to deliver performance, efficiency, and durability.
Engine Performance
- Fast throttle response and strong acceleration
- High torque for better load handling
- Excellent performance for fishing and offshore use
Direct Injection Technology
- Optimax direct fuel injection system
- Improved fuel efficiency and reduced emissions
- Cleaner operation compared to traditional 2-strokes
Fuel Efficiency
- Lower fuel consumption than standard carburetted engines
- Ideal for long-distance boating
Lightweight & Practical Design
- Easier to mount and transport compared to heavier engines
- Improves boat balance and performance
Durability & Build Quality
- Corrosion-resistant components for saltwater use
- Built for Australian freshwater and coastal environments
- Long-lasting engine design with proper maintenance
What to Check Before Buying a Used Mercury 90hp Optimax Outboard
When browsing for a Used Mercury 90hp Optimax Outboard for sale in Australia, proper inspection is crucial.
1. Engine Hours
- Under 1200 hours = Excellent condition
- 1200–2500 hours = Moderate use
2. Service History
Ensure:
- Regular servicing and maintenance
- Injector and fuel system servicing
3. Diagnostics Check
- ECU scan for fault codes
- Confirm injector performance and engine data
4. Compression Test
- Even compression across cylinders
- Indicates engine health
5. Visual Inspection
Check for:
- Corrosion or saltwater damage
- Oil or fuel leaks
- Condition of propeller and lower unit
Used Mercury 90hp Optimax Outboard Motor Price in Australia
The price of a used Mercury 90hp Optimax outboard motor in Australia varies depending on condition and included accessories.
Typical Price Range:
- $6,500 – $13,500 AUD
Factors Affecting Price:
- Engine hours and age
- Condition of injectors and fuel system
- Included accessories (controls, gauges, propeller)
- Overall performance. Used Mercury 90hp Optimax Outboard for Sale
Buy Used Mercury 90hp Optimax Outboard Australia – Trusted Supplier
At Used Australian Outboard Motors, we specialise in supplying high-quality used outboards across Australia, including Mercury Optimax models tailored for local marine conditions.
Why Choose Us?
- Fully inspected and tested engines
- Competitive pricing Australia-wide
- Nationwide delivery including remote areas
- Transparent condition reports
- Ready-to-install engines
We proudly serve customers across Sydney, Melbourne, Brisbane, Perth, Adelaide, and regional Australia.
Best Boats for Mercury 90hp Optimax Outboards
The Mercury 90hp Optimax is ideal for:
- Aluminium fishing boats
- Centre console boats
- Offshore fishing vessels
- Fibreglass runabouts
- Commercial and recreational boats
Perfect for Australian rivers, lakes, estuaries, and coastal waters.
Fuel Efficiency & Running Costs
A used Mercury 90hp Optimax outboard motor offers excellent efficiency for a high-performance engine.
Key Benefits:
- Direct injection reduces fuel consumption
- Lower operating costs compared to older 2-strokes
- Efficient for long-distance trips
Maintenance Tips for Mercury 90hp Optimax Outboards
To ensure long-term reliability:
Maintenance Checklist:
- Regular oil and filter changes
- Service fuel injectors and system
- Flush with freshwater after saltwater use
- Replace spark plugs when needed
- Check gear oil and propeller
Proper maintenance is key for Optimax engines. Used Mercury 90hp Optimax Outboard for Sale
FAQs – Used Mercury 90hp Optimax Outboard Australia
1. What is Optimax technology?
It’s a direct fuel injection system that improves efficiency and performance.
2. Is the Mercury 90hp Optimax reliable?
Yes, it’s known for strong performance and durability when maintained properly.
3. Do you deliver across Australia?
Yes, we offer nationwide delivery including remote areas.
4. Is it fuel-efficient?
Yes, it uses less fuel than traditional 2-stroke engines.
5. Is it suitable for offshore use?
Yes, it provides strong power for coastal and offshore boating.
6. Is it better than a standard 2-stroke?
Yes, it offers improved efficiency and cleaner operation.
Conclusion
A Used Mercury 90hp Optimax Outboard for sale is a powerful, efficient, and reliable choice for Australian boaters who want the performance of a 2-stroke with modern fuel-saving technology. Whether for fishing, cruising, or commercial use, this engine delivers consistent results across a wide range of conditions.
With Used Australian Outboard Motors, you can purchase with confidence, knowing you’re getting a fully tested engine backed by trusted service and fast nationwide delivery. Used Mercury 90hp Optimax Outboard for Sale



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