If you’ve completed an LS1 engine conversion on your Toyota 100 or 105 Series Landcruiser, upgrading the intake system is a crucial step in improving performance and reliability. Radius Fabrications offers a custom-designed aluminium airbox engineered specifically for LS1-converted models. Built with performance, filtration, and durability in mind, this unit is designed to drop directly into the factory location for a seamless fit.
Explore full product specs at https://radiusfabrications.com.au/products/105-series-airboxes
Optimised for Panel Filter Performance
This custom airbox is engineered to work with a panel-style air filter, providing exceptional filtration and improved airflow over standard setups. The panel filter ensures a larger surface area for catching fine dust and particles while still allowing high volumes of clean air into your engine. This is especially important for LS1 conversions where performance and airflow demands are higher.
Every airbox includes an Aeroflow panel filter, built for high-performance use in Australian driving conditions.
Learn more at https://radiusfabrications.com.au/products/105-series-airboxes
Direct Fit for Easy Installation
This 100 / 105 Series LS1 airbox has been designed to drop directly into the standard location under the bonnet. There’s no need for heavy modification or welding, just a smooth, bolt-in fit using our included brackets. While mounting points may vary slightly, the airbox is built to match factory dimensions and overall layout.
This ensures a quick and straightforward installation for DIYers and professionals alike.
See installation details at https://radiusfabrications.com.au/products/105-series-airboxes
4-Inch Inlet and Outlet for Maximum Airflow
To support the higher air demands of the LS1 engine, this airbox features a 4-inch inlet and outlet, allowing for unrestricted airflow to your turbo or throttle body. The result is a better breathing engine that benefits from improved combustion, reduced heat soak, and greater efficiency, especially under load or at higher RPMs.
Whether you're on the track or touring remote trails, this airflow design helps your LS1-powered Landcruiser perform at its best.
Explore performance specs here: https://radiusfabrications.com.au/products/105-series-airboxes
Water Drainage Port for Harsh Conditions
Off-road conditions often mean dust, rain, mud, and water crossings. To protect your engine in these environments, the Radius Fabrications 100 / 105 Series airbox comes with a built-in water drainage port. This lets any water that makes it into the airbox drain away before it reaches the filter or intake, helping to avoid engine damage.
A secure bolt is supplied to close the drain port during high water crossings or when needed in extremely dusty environments.
Find out more at https://radiusfabrications.com.au/products/105-series-airboxes
Custom Fit Guidance for Intercooler Piping
Every Landcruiser build is slightly different, especially when you’ve done an LS1 swap. That’s why we provide additional fitment guidance for intercooler piping once the airbox is added to your cart. This helps you ensure proper clearance and fitment for your specific engine bay setup.
This attention to detail is just one of the ways Radius Fabrications supports you throughout your build.
Review your setup compatibility at https://radiusfabrications.com.au/products/105-series-airboxes
Trusted Australian Manufacturing
Radius Fabrications has a strong reputation for manufacturing durable, Australian-made components for Landcruisers and other 4WDs. Every airbox is CNC cut, TIG welded, and hand-inspected before dispatch. The quality of materials and workmanship ensures your airbox holds up under extreme heat, vibration, and terrain.
Whether you're building a touring rig or a performance vehicle, Radius products are built for real-world driving.
Order with confidence at https://radiusfabrications.com.au/products/105-series-airboxes
Ready to Upgrade Your LS1-Converted 100 / 105 Series?
If you’re investing in an LS1 conversion, make sure your intake system is up to the task. Radius Fabrications’ custom airbox for the Toyota 100 / 105 Series is purpose-built to deliver better filtration, stronger airflow, and greater engine protection. With factory-fit design and performance-focused features, this airbox is an ideal upgrade.
Get yours today from https://radiusfabrications.com.au/products/105-series-airboxes