- Performance Upgrades
Support Engine Cooling with a Heat Exchanger Upgrade for Your 300 Series
Maintain more consistent engine temperatures under demanding conditions with our custom heat exchanger upgrade, developed for the Toyota 300 Series platform. Designed to support engine performance and help reduce heat soak during heavy towing or off-road use, this upgrade can assist in maintaining consistent power delivery under load.
Why Consider a Heat Exchanger Upgrade for Your 300 Series
Under demanding conditions, the factory cooling setup on the Toyota 300 Series Land Cruiser may struggle to maintain consistent intake temperatures. When heat builds up—particularly under load such as towing or sustained off-road use—the factory ECU may reduce engine output to protect critical components, which can result in noticeable performance changes.
Our upgraded heat exchanger is engineered to work in conjunction with your vehicle’s existing water-to-air intercooler system. It provides increased cooling support to help stabilise intake temperatures and reduce the risk of heat soak.
This upgrade can be a valuable addition to a broader performance package, helping maintain performance consistency in challenging environments.
Tow with Confidence – Heat Exchanger Upgrade for the 300 Series
Whether you’re hitching the family caravan or hauling heavy loads across long distances, heat management is key to maintaining reliable engine performance. Our heat exchanger upgrade is engineered to support the FJA300’s cooling system by providing additional water-to-air thermal regulation—particularly beneficial under load or in challenging conditions.
Better Cooling Support When You Need It Most
Elevated engine temperatures can affect both performance and engine durability. By helping stabilise intake, intercooler, and coolant temperatures, this upgrade contributes to more consistent engine operation under stress—ideal for touring, towing, or off-road applications.
Factory-Compatible Integration
This upgrade is designed to fit seamlessly with the 300 Series F33A-FTV platform and integrates with vehicles that have undergone other modifications. It can also complement performance enhancements such as our transmission lock-up kits or custom ECU tuning, giving you a well-rounded solution for heat-sensitive driving conditions.
Toyota FJA300 Heat Exchanger Upgrade
54% Reduction in Temperature
At Just Autos, we’ve developed a heat exchanger upgrade for the FJA300 that’s engineered to improve intake temperature stability under demanding conditions—such as towing, steep inclines, and hot weather.
During internal testing on our own 300 Series, we observed a noticeable improvement in temperature regulation compared to the factory setup. Intake temps remained more stable throughout a simulated high-load driving scenario, and torque delivery was consistent from start to finish.
While individual results may vary depending on driving conditions and vehicle setup, our testing suggests this upgrade can support more consistent performance in heat-intensive environments.
Want to explore how this could benefit your 300 Series? Get in touch with the Just Autos team today.
Protect Your Engine
Maintain Performance
Our FJA300 heat exchanger upgrade is engineered to integrate smoothly with the existing water-to-air cooling systems found in the Toyota 300 Series Land Cruiser. Installed in front of the vehicle’s condenser, the unit is designed to support more effective heat management during high-load conditions.
Factory cooling systems in the 300 Series can experience heat soak during extended towing or off-road use. This upgrade helps manage those thermal demands more efficiently, contributing to more stable engine performance across a range of conditions.
FJA300 Series Heat Exchanger Upgrade
Keep Your Engine Cool – Even Under Pressure
The Toyota 300 Series Land Cruiser is built for power and performance, but like many factory setups, its standard water-to-air cooling system can be challenged under extreme conditions such as heavy towing or high ambient temperatures. These situations can cause the engine control unit (ECU) to reduce fuel delivery as a protective measure, which may result in a noticeable dip in output.
To address this, Just Autos has developed a specialised heat exchanger upgrade that supports improved cooling system performance. Our design increases coolant volume and supports more effective thermal management—particularly during sustained load or high-heat driving.
In internal testing under controlled conditions, our heat exchanger demonstrated a significant reduction in intake temperatures. By managing engine heat more effectively, it may assist in maintaining stable power output across varied driving scenarios.
Testimonials
What Our Customers Have to Say
Enhance Your 300 Series Land Cruiser with Just Autos Upgrade Packages
Unlock enhanced performance for your 300 Series Land Cruiser with Just Autos’ tailored upgrade packages. Our offerings include a range of independently developed components designed specifically for Toyota’s flagship model, such as:
- 4″ performance exhaust system
- Custom-designed airbox
- 4″ snorkel
- Fuel filter bracket
These components are combined into comprehensive performance packages aimed at enthusiasts seeking to elevate their vehicle’s capabilities. Our packages are complemented by our custom ECU remapping services for the FJA300, developed through extensive in-house testing and tuning.
By integrating our heat exchanger upgrade with these performance packages, you can support your engine’s cooling efficiency, particularly under demanding conditions. This combination is designed to help maintain consistent power and torque outputs during various driving scenarios.
300 Series Land Cruiser Heat Exchanger Upgrade
Get More from Your Land Cruiser
Just Autos is a recognised name in diesel performance tuning across Australia. If you’re looking to optimise your FJA300’s capabilities, our team of in-house technicians and experienced tuners can help deliver tailored performance solutions suited to your vehicle and driving needs.
Pre-order your heat exchanger upgrade today, or contact us to learn more about the range of enhancement options we offer for the 300 Series Land Cruiser.
