High quality aluminum radiator . OEM fitment was perfect .
Great product at a great price ! Delivered fast .
Swap the ageing OEM unit for a 48mm aluminium core that pulls heat from the Renesis significantly faster, with a direct factory-fit drop-in for Series 2.
Independent reviews of this product gathered from other stores and owner communities.
High quality aluminum radiator . OEM fitment was perfect .
Great product at a great price ! Delivered fast .
$950 inc GST
This RX8 aluminium radiator replacement is purpose-built for Series 2 owners who treat cooling as a priority, not an afterthought. Produced by KOYO in collaboration with AUTOEXE, it pairs a 48mm aluminium core with precise engineering tailored to the Series 2 bay. Renesis overheating remains one of the most common causes of engine failure. This radiator directly addresses that risk with a meaningful upgrade over the original unit.
For rotary enthusiasts running the Series 2, the clearest result is a temperature gauge that stays composed under sustained load. The Renesis rewards proper thermal management with freer, more confident revving. Choosing a quality aluminium radiator replacement for the RX8 is the single most impactful step in building a reliable cooling system.
Pair this radiator with the GENUINE MAZDA OEM Radiator Hose Replacement Set to refresh the entire coolant circuit at the same time. New hoses ensure the upgraded core works with seals that match its condition.
The APEXi High Pressure High Temp Radiator Cooling Cap raises the system pressure threshold and complements this radiator’s increased capacity directly. For a broader look at KOYO’s alloy core engineering and manufacturing process, KOYO’s official site covers the technology behind their performance radiator range.
Independent reviews of this product gathered from other stores and owner communities.
High quality aluminum radiator . OEM fitment was perfect .
Great product at a great price ! Delivered fast .
Related RX8 Upgrades
This AUTOEXE x KOYORAD radiator is engineered specifically for the Series 2 RX8 (2009-2012). All mounting points, hose connections and transmission cooler lines align with the Series 2 factory locations. It is not designed for Series 1 models.
The aluminium core measures 48mm, and under the same conditions it draws heat away from the Renesis at least 2.5 times faster than the original OEM unit. That is a meaningful real-world advantage in slow traffic and during sustained spirited driving.
It is a direct drop-in replacement. The joint development between AUTOEXE and KOYO ensures all fitment points are tailored to the Series 2 bay, so installation requires no modifications and uses standard workshop tools. You can fit it yourself or have a workshop do it.
The aluminium core transfers heat significantly faster than the original unit and is lighter, which reduces front-end weight on a car where balance matters. Renesis overheating is one of the most common causes of engine failure, and upgrading to a higher-capacity core is the most impactful single step toward a reliable cooling system.
Yes. Low-cost imitations of this design have been linked to Renesis failures. The genuine AUTOEXE x KOYORAD unit is built to the engineering standard that the fitment and thermal performance claims are based on, which is why authenticity matters when choosing this upgrade.
It is strongly recommended. Fitting a new high-capacity radiator alongside aged hoses means the upgraded core is working with seals of unknown condition. Replacing the hoses at the same time refreshes the entire coolant circuit so every component is at the same service standard.
Yes, and it is a natural pairing. A high-pressure radiator cap raises the system pressure threshold, which complements the increased capacity of the aluminium core directly. The two components work together to give the cooling system a higher overall performance ceiling.
