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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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RX8 intake manifold protector installed beneath intake runners with curved metal pipe passing through cut-out

ODULA Intake Manifold Heat Protector for Mazda RX8 (Series 1 & 2, 2003-2012)

Japanese-made heat shield blocking radiant heat from the intake manifold. Essential when an aftermarket exhaust manifold is fitted.

$120

RX8 OMP heat shield installed vertically beside oil metering pump and wiring

ODULA Oil Metering Pump Heat Shield for Mazda RX8 (Series 1, 2003-2008)

Stainless steel barrier mounts between the exhaust manifold and OMP, shielding a critical lubrication component from damaging radiant heat.

$110

ODULA Ram Air Intake black racing funnel shown loose from front angle

ODULA Ram Air Intake Type RS for Mazda RX8 (Series 1 & 2, 2003-2012)

Channels cool outside air to the factory airbox, cutting intake temps and sharpening throttle response on the Renesis without permanent modification.

$390

Mazda RX8 diff cover upright, showing deep cooling fins and blue drain plug

REVOLUTION Big Cooling Diff Cover for Mazda RX8 (Series 1, 2003-2008)

Adds 750cc of diff oil capacity and external cooling fins to tame chronic heat build-up in the Series 1 RX8 differential.

$690

RX8 high flow water pump comparison showing silver factory and black R-Magic impellers

R-MAGIC Super High Flow Water Pump for Mazda RX8 (Series 1, 2003-2008)

A redesigned impeller improves coolant circulation in Series 1 RX8s, reducing cavitation and supporting a thorough cooling-system refresh.

$490

Mazda RX8 silicone hoses sealed in clear Samco retail packaging

SAMCO Silicone Coolant Hose Set for Mazda RX8 (Series 1 & 2, 2003-2012)

Replace every primary coolant line at once with a six-piece silicone kit, handmade in the UK to a stated 170°C rating.

$590

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What owners are saying

CAR SHOP GLOW Passenger Footrest Plate (Aluminium) for Mazda RX8 (Series 1 & 2, 2003-2012) CAR SHOP GLOW Passenger Footrest Plate (Aluminium) for Mazda RX8 (Series 1 & 2, 2003-2012)

Well I broke down and bought this since I didn't want the girlfriend putting her feet up on the dash on long trips or when she can't sit still. This is still set up for the RHD cars, but with a little rigging you can get it to work. It took me about an hour to put in the illuminated shifter, and about 3 hours to figure this out and put it in place. I had to replace the bolts it came with sheet metal screws and a few lock washers, but its in. Its actually pretty comfortable, and I just hope it helps keep the feet off the dash.

GREDDY TRUST Aluminium Racing Radiator TW-R for Mazda RX8 (Series 1, 2003-2008) GREDDY TRUST Aluminium Racing Radiator TW-R for Mazda RX8 (Series 1, 2003-2008)

Huge shout out to RX8 Upgrades for all the bling bits he's supplied so far for my series 1 Steering wheel , GReddy Radiator , Odula intake , Extractors , OMP sheild , Brass gear stick bush , Alternator , GReddy pulley set , New gear stick boot , Magnetic sump plug with a lot more to come ! One of the nicest guys to deal with as well for parts and knowledge on Mazdas is next level !

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.