I now definitely would use OEM PE5R-18-110 plugs although they cost a lot more than NGK's.
Everything listed here is selected for Mazda RX8 Series 1 parts Australia owners need to keep their 2003-2008 car running well, refined and on the road longer. Whether you are restoring factory condition or building something sharper, this range covers genuine OEM replacements and proven aftermarket options specific to the early-model RX8.
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I now definitely would use OEM PE5R-18-110 plugs although they cost a lot more than NGK's.
HKS Hi-Power Cat-Back Exhaust with Titanium Tip for Mazda RX8 (Series 1 & 2, 2003-2012)
im running the hks hi-power with the RB dr midpipe. i absolutely love the sound, planning to get the RB header sometime too.
GENUINE MAZDA OEM Thermostat for Mazda RX8 (Series 1 & 2, 2003-2012)
just make sure you buy a genuine mazda replacement, don't go oem/aftermarket from a parts store.
Full exhaust setup finally finished! All top quality jap items 🇯🇵 Odula Headers/Exhaust Manifold Odula RS Spec Muffler with Kakimoto Tail Finishers In Burnt Titanium Sard Hi Flow Catalytic Convertor As always shoutout to the main man who brings the goods RX8 Upgrades 💪
HKS Hi-Power Cat-Back Exhaust with Titanium Tip for Mazda RX8 (Series 1 & 2, 2003-2012)
I had the hks hi power with ap midpipe and it was loud as hell but i loved it until i started getting pulled over all the time for it. You just have to keep the rpms down around the cops.
I am happy with the mod. Very happy. Taka s recommended first mod list: Sway bar. Odula intake or similar. Brake pads. I think it is no worse. I actually think the power opens up after 6000rpm without losing anything at all below 3000rpm. There is no extra noise when you have windows up and turn on the radio. Certainly, Zaku has talked about the moo noise while cruising at 6000 rpm. Well, I have to say it is a very small cow then. I am happy that it is no big noise, since that would indicate a good seal and laminated air flow to the air box.
The 2003-2008 RX8 is a distinct car with its own fitment, calibration and quirks. Parts selected without that in mind can cause more problems than they solve. However, every listing here is relevant to the Series 1 platform, so you can shop with confidence that what you are looking at was engineered for your car. For Mazda RX8 Series 1 parts Australia-wide, this is the range built specifically around the early-model car.
For owners who want the car to operate exactly as Mazda intended, genuine OEM components are the straightforward answer. Factory-correct fit means no adaptation, no calibration guesswork and no compromise on finish or function.
In addition, a new genuine part removes the unknown history that comes with second-hand components. Worn seals, fatigued springs, or sensors that are borderline but not yet failed are all hidden risks. Meanwhile, genuine Series 1 supply from the original chain continues to narrow over time. Therefore, sourcing them new while stock exists is the practical move.
Not every job calls for a factory replacement. Moreover, aftermarket RX8 Series 1 parts chosen for the early-model car often address areas where the OEM design left room for improvement. Cooling capacity, ignition performance, intake flow and suspension feel are common targets.
The rotary engine is more sensitive than most to consistent oil quality, coolant temperature and strong ignition. As a result, targeted reliability upgrades in those systems pay dividends in long-term dependability. Also, the right aftermarket component, chosen for your car’s condition, can make the Series 1 feel sharper than it did from the factory.
Used consistently, this approach keeps the early-model RX8 doing what it was built to do. Because the right parts matter, it delivers an involving, high-revving driving experience over real kilometres. That is what sourcing the right Mazda RX8 Series 1 parts Australia-wide is ultimately about.
The RX8 Series 1 covers model years 2003 to 2008. If your car falls within that range, it is a Series 1 and the parts listed under this category are the ones to browse first.
Check the fitment details on each individual product listing before ordering. If your car has been modified from its original configuration, compare the listed part against your vehicle carefully, as aftermarket changes can affect compatibility.
Yes, genuine Mazda components are available within this range. A new genuine part gives you factory-correct fit, calibration and finish, and removes the uncertainty of unknown wear history that comes with used or sourced second-hand parts.
Genuine OEM parts restore factory operation and finish exactly as Mazda intended, making them the straightforward choice for standard replacements. Aftermarket parts suit owners looking to tailor driving feel, presentation or build direction beyond the factory specification, with the right choice depending on the component and how the car is used.
Not necessarily. Series 1 (2003-2008) and Series 2 (2009-2011) RX8 models differ in several areas, including sensors, body components and some mechanical parts. Always confirm the stated fitment on the individual product listing before purchasing.
Yes, this range includes both factory-style replacements and aftermarket components suited to a considered ownership approach. Addressing worn components alongside relevant upgrades at the same time is a practical way to support long-term Series 1 reliability.
Where practical, yes. Grouping related servicing or replacement work together saves labour time and avoids disturbing the same area of the car twice. The product listings can help you identify what else may be worth addressing at the same time.