RX8 Aluminium Radiator and Cooling Parts - Radiators, Thermostats, Hoses and More

Radiators, thermostats, coolant hoses and water pump components for RX8 owners maintaining the factory system or refreshing it properly, including genuine and performance-spec RX8 aluminium radiator options. If the cooling system has been neglected or the car is being rebuilt, this is where to start.

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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.

$950 inc GST

Restores factory coolant-flow control to the Renesis engine with a new genuine part, eliminating the uncertainty of an aged or used thermostat.

$30

Replace isolated intake parts with a coordinated ODULA, KTS and GREDDY TRUST induction package for sharper throttle response.

Price range: $90 through $390 inc GST

Adds a dedicated right-hand-side oil cooler to Series 1 RX8s. Its GREDDY core is rated at 9,800 cal/h to protect the Renesis rotary during track sessions, sustained highway runs and hot-weather driving.

Original price was: $1,200.Current price is: $950.

Full-aluminium 40mm core radiator that more than doubles OEM coolant capacity, drops heat by ~35%, and fits the SE3P without modification.

$730

Multilayer polyester silicone replaces the factory intake hose for noticeably sharper acceleration response and a striking red finish in the engine bay.

$380

Replaces the full intake path with a matched ram air system, sharpening throttle response and bringing out the Renesis induction note.

$1,680

Channels underbody airflow to cool the engine bay faster and stop heat from becoming trapped. A bolt-on fit, no modification needed.

$450

Aluminium panel that seals the gap above the radiator core, directing nose airflow through the fins rather than over them. A bolt-on cooling upgrade for Series 1 cars.

$160

Replace ageing coolant hoses with factory-correct rubber. This RX8 radiator hose set covers all three main connections in one purchase.

$150

Replace an ageing or cracked coolant overflow bottle with Mazda’s own Revision C reservoir, supplied with its matching OEM cap. Restores factory-correct overflow containment across every RX8 from 2003 to 2012.

$250

Replace all three accessory drive belts on Series 1 models with factory-correct genuine Mazda components, restoring reliable drive to the water pump, alternator and air conditioning circuits.

$120

Replace worn accessory belts with factory-matched components. This RX8 Series 2 belt kit covers the water pump, alternator and air conditioning drives.

$120

Drop-in AIRINX-GT panel filter renews the factory airbox with improved airflow and reliable filtration for every RX8 service interval.

$90

Raises coolant boiling point by increasing system pressure, giving the RX8 cooling system real headroom against localised boiling under load.

$40

Adds 1 litre of oil capacity and integrated cooling fins to keep the Renesis lubricated and cooler under hard driving.

$488

Swap the factory rubber intake pipe for a rigid polished aluminium tube. Sharper throttle feel, stable airflow geometry, cleaner engine bay.

$250

Drops into the OEM airbox to open intake volume and sharpen throttle response. Retains the factory engine cover and bay layout.

$180

Carbon fibre lower-bumper insert that opens the Series 2 front inlet, directing 30% more air into the engine room with a clean composite finish.

$800

Replaces the Series 2 front opening insert with a deep gloss piano black finish, adding 30% more airflow into the engine bay.

$750

What owners are saying

AUTOEXE Brake Rotors (Super Sport, 2-Piece) for Mazda RX8 (Series 1 & 2, 2003-2012) AUTOEXE Brake Rotors (Super Sport, 2-Piece) for Mazda RX8 (Series 1 & 2, 2003-2012)

More cool parts from https://rx8upgrades.com.au/ for the project car number two 🙌🏻 KTS coilovers front and rear AutoEXE two piece rotors front and rear with AutoExe pads Project PMU braided lines in charcoal Raypower 20mm bolt on spacers Fully rebuilt calipers with new pistons One corner done three more to go 🤙🏻 Thanks RX8 Upgrades nothing but the best forget the rest 🏁

ARD Advanced Power Starter Motor for Mazda RX8 (Series 1 & 2, 2003-2012) ARD Advanced Power Starter Motor for Mazda RX8 (Series 1 & 2, 2003-2012)

Trip from Sunshine Coast to Gold Coast was a blast ! Car feels so much better, so much more throttle response, so much cooler. Highly recommend changing Autoexe Type F radiator+KTS Suction Tube+ODULA Ram air 🫶🫶🫶🫶 ARD High speed starter motor makes cold start+hot start lightning fast. Supplied by RX8 Upgrades 🔥🔥

AUTOEXE Motion Control Beam Front and Rear for Mazda RX8 (Series 2, 2009-2012) AUTOEXE Motion Control Beam Front and Rear for Mazda RX8 (Series 2, 2009-2012)

Night and day difference, even on a bone stock suspension. While installing the AutoExe front strut bar greatly enhanced steering response and turn in, the handling improvements from it was very subtle. Likewise with the AutoExe tie bars installed in the front and back of the car. More solid feel, less suspension parts deflection under cornering loads. These Motion Control Beams took away the vibrations that are slightly felt in the steering wheel from small road surface imperfections. It also took away the bumps felt from pavement gaps and mostly the rumble felt from railway crossings and brick roads. Going through small pot holes and road patches, the stock suspension is finally doing its job to dampen away those bumps and doesn't get fully transmitted throughout the entire car. Big bumps, you don't hear a loud hollow "thump" emanating from the back of the car. Just a solid "thud". The car used to understeer and now it hardly does. It handles quite neutral now, even on bone stock open differential, and did I already say bone stock suspension? This is win win, all around, without sacrificing anything.

The rotary engine runs hot by nature. As a result, the cooling system earns its keep every time the RX8 climbs toward the redline. An RX8 aluminium radiator gives the system a meaningful upgrade over a tired original. For example, you get better heat rejection, lighter weight and a core built for hard sessions.

Mazda Australia specifies exact coolant system standards for the RX8. Meeting or exceeding those standards is the baseline for any cooling refresh. However, the radiator is only one part of the story. Hoses, thermostat and water pump components all work together. Because of this, replacing one worn item while leaving the others unchecked tends to come back around.

RX8 Aluminium Radiator and Cooling Range

  • Radiators, aluminium and OEM-spec options for owners sourcing an RX8 radiator Australia-wide. For example, a quality Mazda RX8 aluminium cooling radiator offers a genuine improvement in thermal capacity over a corroded or scale-clogged original.
  • Thermostats, including higher-spec options for owners running the car harder. A correctly rated thermostat keeps operating temperature in the right window. Moreover, a racing thermostat suits builds where sustained high loads are expected.
  • Coolant hoses: fresh hoses eliminate cracked, swollen originals that cause slow leaks. In addition, replacing the plumbing alongside the radiator keeps the engine bay looking the part.
  • Water pump components: maintenance and refresh parts for owners tackling the water pump. These also suit a broader cooling-system overhaul.

Plan the whole system, not just the obvious part

Before ordering, inspect the radiator, hoses, thermostat and water pump together. A failed hose on a freshly fitted radiator is avoidable. Therefore, catching it during the same job saves time and keeps the car out of trouble. Meanwhile, if the vehicle is already apart for engine work, a complete cooling refresh makes the most of the access you already have.

For owners sourcing RX8 cooling parts Australia-wide, the range here covers single-item replacements and full-system refreshes. Also, matching components to your car’s current configuration makes the setup easier to service next time.

Build a cooling system you can rely on

Whether the goal is a like-for-like replacement or a more capable setup, correct installation remains essential. In addition, a fresh coolant service is always worth doing at the same time. The right combination of a quality aluminium rad, quality hoses and a properly rated thermostat keeps temperatures where they belong. Finally, that lets the rotary do what it was built to do, without the anxiety of watching the gauge.

Frequently Asked Questions

What cooling parts are available for the RX8?

The RX8 cooling range covers aluminium radiators, thermostats, coolant hoses and water-pump-related components. This lets you address a single known fault or carry out a broader cooling-system refresh depending on the condition of the car and the scope of your work.

Is an aluminium radiator a worthwhile upgrade over the factory RX8 radiator?

An aluminium radiator offers better heat dissipation than the standard plastic-tank unit and is a common choice during a cooling-system refresh or when the original radiator is showing its age. It also suits owners who want a more durable core as part of a considered build.

Should I replace other cooling components at the same time as the radiator?

It is worth inspecting the hoses, thermostat and water-pump components whenever the radiator is out, because access is much easier with the front of the engine bay clear. Replacing worn ancillaries at the same time avoids pulling everything apart again shortly after.

What does a racing thermostat do differently from the standard RX8 thermostat?

A lower-temperature or racing thermostat opens earlier, allowing coolant to circulate sooner and keeping operating temperatures lower under harder use. It is best planned as part of a properly considered cooling refresh rather than fitted in isolation.

When should coolant hoses be replaced on an RX8?

Original RX8 coolant hoses can harden, crack or swell with age and heat cycles. If the hoses feel stiff, show surface cracking or the car has covered significant mileage on its original plumbing, replacement is worth doing alongside other cooling work to avoid a future leak.

Do these cooling parts suit both Series 1 and Series 2 RX8 models?

Fitment varies by component. Each product listing confirms which series it suits, so check the individual part before ordering to make sure it matches your specific RX8.

Is a full cooling-system refresh necessary, or can I just replace one part?

A single replacement is perfectly reasonable when there is a known fault and the rest of the system is in good condition. A broader refresh makes more sense when multiple components are showing their age, or when the car is already partly disassembled for other work.