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GENUINE MAZDA OEM Radiator Hose Replacement Set for Mazda RX8 (Series 1 & 2, 2003-2012)

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

Sealed RX8 radiator hose set showing a curved black hose in Mazda packaging

$150

This RX8 radiator hose set is the genuine Mazda OEM replacement for all three main coolant hoses on the SE3P. The Renesis engine runs tight thermal tolerances, and the cooling system depends on hoses that match the original rubber compound, wall thickness and moulded connection geometry exactly.

Genuine Mazda RX8 hoses deliver precisely that, making this the straightforward choice for any owner refreshing ageing rubber during scheduled maintenance or a radiator swap.

RX8 Radiator Hose Set Key Features

  • Complete three-hose set covers every main coolant connection in a single purchase, so no hose is left at an unknown age after a cooling refresh.
  • Manufactured to OEM specification, these hoses match the original moulded shape and rubber compound. The result is a direct, leak-free fit with no adaptation required.
  • Aged coolant hoses harden, swell or develop micro-cracks over time. Replacing as a set eliminates the single weak-hose risk that can cause an overheating event on an otherwise refreshed system.
  • The standard black finish retains a clean under-bonnet appearance with no visual compromise.
  • Finally, fitting this RX8 radiator hose set during a radiator job shares the same drain-and-refill procedure. That makes the timing of the work efficient and avoids a return visit to the coolant circuit.

For RX8 enthusiasts refreshing the cooling circuit, new OEM hoses mean every main coolant path is a known quantity. No worn rubber, no guessing whether an original hose will hold on a long run. That confidence is the real outcome of the job.

If you want to extend the refresh beyond hoses, the AUTOEXE x KOYORAD High-Capacity 48mm Aluminium Radiator is the natural companion for Series 2 owners, pairing a higher-capacity core with fresh Mazda RX8 coolant hose replacement in a single job. Series 1 owners can take the refresh further with the R-MAGIC Super High Flow Water Pump, addressing coolant circulation at the same time.

The GENUINE MAZDA OEM Waterpump/Alternator and Airconditioning V-Belt Kit is worth adding for Series 1 builds, since the belts share the same service interval as the hoses. For genuine parts information, visit Mazda Australia’s official website.

Additional information

RX8 Model

,

Colour

SKU OM-RHS-S1S2 Categories , Types , Brand:

Related RX8 Upgrades

This radiator hose replacement set is one of the best Mazda RX-8 upgrades you can make to your Series 1 (2003-2008) or Series 2 (2009-2012). Radiator hose upgrades are among the top OEM mods you can buy from MAZDA for owners who want better performance and reliability from their RX8. If you are looking for rx8 radiator hose kit for sale in Brisbane (QLD), Sydney (NSW), Melbourne (VIC), Canberra (ACT), Adelaide (SA), Darwin (NT) or Perth (WA), you’ll find high-quality Japanese Cooling upgrades at RX8 Upgrades.

Frequently Asked Questions

Does this radiator hose set fit both Series 1 and Series 2 RX8 models?

Yes, this genuine Mazda OEM radiator hose set suits all RX8 models across both Series 1 (2003-2008) and Series 2 (2009-2012). The hoses are manufactured to OEM specification with factory-correct dimensions and connection geometry, so they fit directly without modification on either series.

How many hoses are included in this set?

The set includes all three main coolant hoses. Buying as a complete set means every primary coolant connection is renewed at the same time, so no hose is left at an unknown age after a cooling system refresh.

Are these hoses genuine Mazda OEM parts or aftermarket replacements?

These are genuine Mazda OEM hoses, not aftermarket alternatives. They match the original rubber compound, wall thickness and moulded shape exactly as specified for the Renesis cooling system, ensuring a factory-correct, leak-free fit.

Why should I replace my RX8 coolant hoses as a set rather than just the one that has failed?

Coolant hoses age together. If one hose has hardened, swelled or cracked, the remaining hoses are likely at a similar stage of degradation. Replacing all three at once removes the risk of a second hose failing shortly after, which is especially important on a rotary engine where an overheating event can cause serious damage.

Is this a good time to replace the radiator hose set when swapping the radiator?

Yes, and it is the ideal time. A radiator replacement already requires draining and refilling the coolant system, so replacing the hoses simultaneously adds minimal labour while ensuring the entire primary cooling circuit is renewed in a single service.

What colour are the replacement hoses and will they look standard under the bonnet?

The hoses are black, matching the original fitment. Under-bonnet appearance is retained without any visual modification, which suits owners who prefer a factory-correct presentation.

Can I pair these hoses with an upgraded aluminium radiator, or are they only suited to the OEM radiator?

The hoses are dimensioned to OEM connection geometry, so they are compatible with a direct-replacement radiator that uses standard connection points. For Series 2 owners fitting the AUTOEXE x KOYORAD aluminium radiator, these hoses make a natural pairing to refresh the full primary cooling circuit at the same time.