AUTOEXE x KOYORAD aluminium radiator replacement for RX8 Series 2. Drops coolant temps at least 2.5x faster than OEM with direct factory fit.
$950 inc GST
This RX8 aluminium radiator replacement is purpose-built for Series 2 owners who want serious cooling performance without compromising factory fitment. Produced by KOYO in collaboration with AUTOEXE, it features a 48mm aluminium core and subtle engineering changes. These allow it to sit exactly as the original unit does. Renesis overheating is one of the most common causes of engine failure. This radiator directly addresses that risk.
For RX8 enthusiasts, the most obvious result is a temperature gauge that stays composed under hard driving and in traffic. The Renesis thrives when its coolant temperature is managed properly. Fitting this RX8 aluminium radiator replacement gives the engine the thermal headroom it needs to rev freely and confidently.
Pair it with the R-MAGIC Super High Flow Water Pump, which pushes coolant through the larger core more effectively, and the BEATRUSH Engine Cooling Under Panel Tray, which directs airflow into the engine bay for further thermal management gains. Round out your cooling refresh with the APEXi High Pressure High Temp Radiator Cooling Cap, which raises the system pressure threshold and complements this radiator’s increased capacity. For a broader look at KOYORAD’s radiator engineering, KOYO’s official site details the manufacturing process and alloy core technology behind their performance radiators.
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Price range: $90 through $390 inc GST
Original price was: $1,200.$950Current price is: $950.
$730
Yes. The AUTOEXE x KOYORAD aluminium radiator is engineered for direct OEM fitment on the Series 2 RX8 (2009-2012). All mounting points, hose connections and transmission cooler lines align with factory locations, so installation requires no cutting or adaptation and can be completed with standard tools.
The 48mm aluminium core draws heat away from the Renesis engine at least 2.5 times faster than the OEM radiator under the same conditions. That translates to a temperature gauge that stays composed during hard driving and stop-and-go traffic, giving the engine genuine thermal headroom.
This unit is purpose-built for the Series 2 RX8 (2009-2012) only. The engineering refinements and fitment are specific to that model year, so Series 1 owners should look for the corresponding Series 1 alternative.
Renesis overheating is one of the most common causes of engine failure in the RX8. The rotary is highly sensitive to coolant temperature, and the factory radiator offers limited thermal margin under sustained load or in hot Australian conditions. Upgrading to a higher-capacity unit directly addresses that risk.
No. Low-quality imitations of this design have a documented history of contributing to Renesis engine failures. The AUTOEXE x KOYORAD unit includes subtle engineering refinements specific to the Series 2 RX8 that generic copies do not replicate, making it the only safe choice for a cooling upgrade.
The radiator is produced by KOYO in collaboration with AUTOEXE, meaning it is not an off-the-shelf unit adapted to fit. AUTOEXE's involvement adds RX8-specific engineering refinements to KOYO's aluminium core technology, resulting in a fitment and performance level that a generic radiator cannot match.
The R-MAGIC Super High Flow Water Pump pushes coolant through the larger 48mm core more effectively, maximising the radiator's capacity. Adding the BEATRUSH Engine Cooling Under Panel Tray improves airflow into the engine bay, and upgrading to the APEXi High Pressure High Temp Radiator Cap raises the system pressure threshold to suit the increased cooling capacity.
The core is aluminium, while the tank and fittings use stainless steel construction for long-term corrosion resistance. That combination keeps the cooling circuit sealed and reliable across years of Australian summers without the degradation risks associated with plastic tank OEM-style units.
