This Jayrad JR5106J radiator is specced around the Toyota Land Cruiser 300 LC300 FJA300 3.4L AMT setup from 07/2021 on, so you know it lines up with the factory mounts and hoses. You get a core that stands 565 mm high and 710 mm wide, which keeps plenty of fin area in front of the fan for slow climbs and sand work. A 36 mm thick core balances coolant volume and airflow, while a 390 mm transmission cooler section helps the auto keep its cool when you tow or load up.

The hose connections stick to the right sizes, with both inlet and outlet at 38.5 mm diameter and a breather outlet at 12 mm, so standard LandCruiser hoses and overflow gear match straight on. That means fewer surprises in the shed and more time to get out there. The dimensions and layout suit typical LC300 touring setups, from daily driving to long-distance work across hot Aussie highways and corrugated back roads.

• Suits Toyota Land Cruiser 300 LC300 FJA300 3.4L AMT (07/2021-on)
• Jayrad JR5106J direct-replacement radiator
• Core height measures 565 mm for strong frontal coverage
• Core width is 710 mm to match LC300 fan shroud
• Core thickness of 36 mm balances coolant volume and airflow
• Integrated 390 mm transmission cooler for auto models
• Inlet hose neck diameter is 38.5 mm
• Outlet hose neck diameter is 38.5 mm
• Breather outlet diameter is 12 mm for overflow connection
• Categorised under 4x4 & Touring performance radiators

Q: Does this radiator suit all Toyota Land Cruiser 300 models?

No, it suits LC300 FJA300 3.4L automatic models from July 2021 onward. Always match your VIN and engine code against the LC300 FJA300 3.4L AMT listing before ordering. If your vehicle is an earlier LandCruiser or a different engine variant, sizing or hose positions may differ. When in doubt, compare the core and tank layout with your existing radiator.

Q: Is there an integrated transmission cooler in this radiator?

Yes, this radiator includes an integrated transmission cooler section measuring 390 mm. This cooler is designed for the automatic transmission fluid circuit already used in the LC300 FJA300 3.4L AMT platform. You will reconnect the factory transmission lines to the ports provided in the tanks. Always check for leaks and correct fluid level after installation.

Q: What hose diameters does this radiator use?

The radiator uses 38.5 mm connections for both inlet and outlet hoses and a 12 mm breather outlet. These measurements match the standard hose sizing on compatible LC300 FJA300 3.4L AMT vehicles. Reusing the existing hoses is typically possible if they are in sound condition. Many owners still choose to replace old hoses at the same time to reduce future downtime.

Q: Can I fit this radiator at home or should a workshop do it?

Installation can be completed by experienced home mechanics but many owners choose a workshop. The job involves draining coolant, disconnecting 38.5 mm hoses, removing shrouds and fans, and handling the 390 mm transmission cooler lines. Incorrect bleeding of the cooling system can cause hot spots and engine issues. A professional workshop can pressure test the system and confirm there are no leaks before you drive away.

Suitable for Toyota Land Cruiser 300 LC300 FJA300 3.4L automatic models from July 2021 onwards. Radiator is a direct replacement unit for vehicles originally equipped with this style of core and integrated transmission cooler. Professional installation is recommended so coolant level bleeding and transmission line reconnection meet manufacturer specifications. Always match core dimensions and hose diameters to the original unit before fitment.