Your cart

RX8 OEM Aftermarket Parts: Upgrades, Replacements and Performance Options

RX8 OEM aftermarket parts are the non-genuine replacements and performance upgrades Mazda RX8 owners reach for when they want reliable, purpose-built alternatives to stock components. Whether you are refreshing a worn component or building toward a specific performance goal, this range gives you considered options across cooling, drivetrain, handling and more.

RX8 Model

Model Filter

Price Range ($)

Rate Range - slider
$ 20 — $ 13000

Category

Category Filter

Brand

All Brands Filter

Colour

Colour Filter
RX8 magnetic sump plug with GReddy black hex head, threaded body and separate sealing washer

GREDDY TRUST Super Magnetic Oil Pan Sump Plug for Mazda RX8 (Series 1 & 2, 2003-2012)

A 5000 gauss neodymium magnet intercepts fine ferrous debris at every oil change, protecting Renesis apex seals and bearings between service intervals.

$70 inc GST

Mazda RX8 carbon side decals in black HASEPRO retail packaging on timber floor

HASEPRO Carbon Side Decal Dress-Up Set (2) for Mazda RX8 (Series 1 & 2, 2003-2012)

Pre-cut carbon-look side decals add a sharp profile accent to the RX8 body lines while leaving the original paint untouched beneath.

$150 inc GST

RX8 headlight protection film graphic showing a curved pre-cut sheet and before-after headlight panels

HASEPRO Magical Art Revival Pre-Cut Headlight Protection and Restoration Film for Mazda RX8 (Series 2, 2009-2012)

Applies directly over yellowed 2009-2012 lenses to restore clarity and block further UV damage. Pre-cut for Series 2 headlights, no trimming needed.

$180 inc GST

HKS RX8 metal catalyser with polished converter body, heat shield and flanged pipe ends

HKS Metal Catalyzer for Mazda RX8 (Series 1 & 2, 2003-2012)

A 150-cell metallic-core catalytic converter that flows more freely than the factory ceramic unit, sharpening the Renesis exhaust note without decat harshness.

Original price was: $2,600.Current price is: $2,179. inc GST

KTS Mazda RX8 suction tube for Series 1 and Series 2 models

KTS Induction Suction Tube for Mazda RX8 (Series 1 & 2, 2003-2012)

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

$250 inc GST

RX8 coilovers Australia KTS SC set with four black-spring dampers and blue mounts

KTS SC Damper System Coilover Set for Mazda RX8 (Series 1 & 2, 2003-2012)

Monotube Japanese coilovers with 15-way damping and full ride-height adjustment. The sporting RX8 coilover kit Australia enthusiasts have been asking for.

$1,860 inc GST

Six RX8 rear window buttons in black, blue and red on aluminium tread plate

LEG MOTORSPORT Anodized and UV Resistant Rear Window Button x2 (Black) for Mazda RX8 (Series 1 & 2, 2003-2012)

Anodised aluminium RX8 rear window buttons replace degraded original plastic. UV-resistant black finish holds colour in direct Australian sun.

$50 inc GST

Six RX8 rear window buttons in black, blue and red on aluminium tread plate

LEG MOTORSPORT Anodized and UV Resistant Rear Window Button x2 (Blue) for Mazda RX8 (Series 1 & 2, 2003-2012)

Anodised aluminium replacements for worn plastic rear latch buttons. UV-resistant blue finish keeps both RX8 rear window buttons matched and sharp.

$50 inc GST

Six RX8 rear window buttons in black, blue and red on aluminium tread plate

LEG MOTORSPORT Anodized and UV Resistant Rear Window Button x2 (Red) for Mazda RX8 (Series 1 & 2, 2003-2012)

Anodised aluminium RX8 rear window buttons replace faded plastic latch trims with durable, UV-resistant red to lift the cabin finish.

$50 inc GST

RX8 leather gearboot surround fitted to centre console with red stitching

LEG MOTORSPORT Leather Gearboot Surround (Red Stitch) for Mazda RX8 (Series 1 & 2, 2003-2012)

Genuine leather and red contrast stitching refresh the shift area, matching the look of factory RS and Spirit R trim without modification.

$150 inc GST

Mazda RX8 elbow side cushion sealed in clear packaging with red stitching

LEG MOTORSPORT Sport Elbow Side Cushion (Red Stitch) for Mazda RX8 (Series 1 & 2, 2003-2012)

Real leather console-side elbow rest with red stitching, adding genuine comfort to the RX8 cabin for every Series 1 and Series 2 owner.

$150 inc GST

RX8 Series 1 intake airbox interior with polished circular funnel and ribbed walls

ODULA Big Racing Intake Funnel for Mazda RX8 (Series 1 & 2, 2003-2012)

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

$180 inc GST

RX8 big bore throttle front view showing gold butterfly plate and black actuator housing

ODULA BIG-BORE Throttle Body for Mazda RX8 (Series 1 & 2, 2003-2012)

Widens the intake passage by approximately 2 mm for sharper throttle response across the rev range. A strong addition to any intake build.

$750 inc GST

RX8 carbon dash panel angled front view showing three circular meter openings

ODULA Carbon Meter Dash Panel for Mazda RX8 (Series 1, 2003-2008)

Highest-grade carbon meter surround made in Japan by ODULA, replacing the standard Series 1 instrument trim with a precise, driver-focused finish.

$450 inc GST

Mazda RX8 fresh air grille on silver Series 2, close front view

ODULA Fresh Air Grille (Carbon Fibre) for Mazda RX8 (Series 2, 2009-2012)

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 inc GST

ODULA Mazda RX8 piano black grille for Series 2 models

ODULA Fresh Air Grille (Piano Black) for Mazda RX8 (Series 2, 2009-2012)

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

$750 inc GST

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 inc GST

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 inc GST

RX8 polyurethane differential mounts with metal sleeves displayed upright on dark fabric

ODULA Polyurethane Reinforced Differential Mounts for Mazda RX8 (Series 1 & 2, 2003-2012)

Reinforced urethane mounts that eliminate diff movement under load, sharpening rear-end feel and reducing axle tramp on corner exits.

$250 inc GST

RX8 exhaust earth strap pair laid separately on a white background

ODULA Racing Exhaust Earth Strap Set for Mazda RX8 (Series 1 & 2, 2003-2012)

Grounds the RX8 exhaust system with nickel-plated straps rated to 1400°C, cutting static buildup that interferes with sensors and audio.

$80 inc GST

What owners are saying

GENUINE MAZDA OEM Spark Plugs for Mazda RX8 (Series 1 & 2, 2003-2012) GENUINE MAZDA OEM Spark Plugs for Mazda RX8 (Series 1 & 2, 2003-2012)

I went ahead and replaced them on our 2014 Grand Touring AWD after almost 5 years and 60k miles. I know the manual says 75k miles but I figure it was time given the high compression ratio SkyActiv engines and the lots of stop and go seen by this car (my spouse's hour long city commute). I got the Mazda OEM plugs (PE5R-18-110) despite their high cost, given the experience of others on this forum. Very straightforward job: remove the cover, remove the bolts holding the ignition coils, unplug connector for each coil, and remove and replace plugs. After seeing them I'm glad I replaced them.

GREDDY TRUST Large Capacity Oil Pan for Mazda RX8 (Series 1, 2003-2008) GREDDY TRUST Large Capacity Oil Pan for Mazda RX8 (Series 1, 2003-2008)

Just put my Greddy oil pan on this past week and switched from Royal Purple 5w20 to 5w30. On driving back & looking at my EGT's it is a good 30-40 degrees F cooler than before. Didn't think it would make much/if any difference, but it did. I'm pretty surprised, I guess the extra .5 Quart of oil and/or the aluminum design makes a bit of difference.

AUTOEXE Premium Cat-Back Exhaust Muffler for Mazda RX8 (Series 1 & 2, 2003-2012) AUTOEXE Premium Cat-Back Exhaust Muffler for Mazda RX8 (Series 1 & 2, 2003-2012)

Just installed my spanking new Autoexe Stainless Muffler, and here's a short take of my initial impressions: The Autoexe catback is lovely - very unique 2 box design and the tips are the tapered kind (ie cut at an angle) each lasercut with the Autoexe logo. Very nicely polished midpipe which connects beautifully (and easily) with the exhaust outlet. Most importantly, the exhaust tips have a perfect visual alignment, unlike other exhausts i've seen where one tip protrudes out more than the other. The Autoexe definitely doesn't have this problem. Also, the 2 box design has a lower profile than stock. Previously, i used to scrape and even dent the exhaust box when clearing humps or even parking - not so with the Autoexe. The Autoexe performs really well, at least on my AT. There is a noticable increase in low end torque, and the car just feels substantially lighter. Revs are much more responsive, and the slight lag felt when launching the car seems to have melted away. Linear acceleration is also much faster (at least across 1st 3 gears), and i'm reaching 120-130kmh much faster on 2nd gear alone (NB mine is the 4spd AT). I'm very pleased with the low-torque gains on the Autoexe - finally i have that slight 'lurch' from start which the manuals seem to have, but the ATs don't. The Autoexe starts off idle with a really low, bassy growl. When first installed, it was barely audible, but sounds louder now. In time, the db will increase to an extent. On higher RPM revs, exhaust sounds deep and wet, and def not those shrilly Remus' we hear on the expressways from time to time. Installation was a breeze, and took under an hour at Monster Garage at Ubi, who's the only authorized dealer in Singapore, so these guys know their stuff. The torque/hp improvement was a shocker esp on low end, esp when mine's an AT. I've heard of bros installing Fujitsubos and HKSs that have either no or negative benefit. In this respect, I'm mighty pleased with the Autoexe. Sound is not loud, but a soft low bassy growl when idle, which develops into a mature wet sound at higher revs.

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 !

RX8 OEM aftermarket parts are the non-genuine replacements and upgrades built to a documented application, chosen by owners who want a reliable alternative without compromising on fit or purpose. Therefore, consider where each part sits in your build and what standard you want the car to meet.

This collection spans straightforward replacements for worn components through to purposeful upgrades. For example, these improve response, cooling, control and everyday drivability. Every part listed here has a documented application. Also, check individual product compatibility before ordering, particularly if your car has already been modified.

Mazda RX8 aftermarket parts for every stage of ownership

Owners searching for RX8 aftermarket parts Australia-wide will find a specialist catalogue here, not a general-purpose parts site. That distinction matters. For example, the rotary engine has specific demands around cooling, oil management and airflow. A generic catalogue does not account for those demands. Therefore, the options in this range are selected with those requirements in mind.

What this range covers

  • Maintenance and replacement: A new aftermarket component fitted to a known specification is more dependable than a used genuine part. Moreover, an unknown service history adds risk across cooling hoses, filters, sensors and seals.
  • Mazda RX8 upgrade parts: Where a stock component is functional but limiting, an upgrade part helps. For example, it can improve throttle response, reduce heat soak or tighten handling consistency. Therefore, target the area that matters most to how you drive.
  • RX8 performance parts work best as part of a coherent plan. For instance, an intake upgrade pairs naturally with an exhaust improvement. Similarly, a handling change often calls for complementary tyre and alignment work. Think in systems, not individual items.
  • Fitment confidence: Always confirm the stated application and series compatibility before purchase. In addition, fitment details are listed per product and are the reliable reference point.

Aftermarket versus genuine: choosing the right approach

The decision between genuine and aftermarket components is not always straightforward. Genuine Mazda parts remain the factory-correct choice where original calibration and fit are non-negotiable. In addition, for some safety-critical or emissions-related components, that is clearly the right call.

However, for the broader range of RX8 OEM aftermarket parts, a quality aftermarket alternative can match or exceed the original. This applies particularly to performance, cooling, suspension and interior upgrades.

Finally, browse with a clear idea of the job each component needs to do. Select on documented purpose, confirmed fitment and how each part contributes to your build. As a result, the right RX8 OEM aftermarket parts keep your car consistent, whether as reliable daily transport, a refined weekend driver or a car built to perform.

Frequently Asked Questions

What is the difference between genuine Mazda parts and aftermarket parts for the RX8?

Genuine Mazda parts are factory-original components made to the exact specification the car was built with, which matters where precise calibration or OEM fit is critical. Aftermarket parts are non-genuine alternatives that may suit owners seeking a specific replacement solution, a performance upgrade, or a component that better fits their build direction. The right choice depends on the part's role and your priorities for the car.

Are aftermarket parts suitable for a standard RX8 that just needs a repair?

Yes, many aftermarket parts are a practical choice for straightforward repairs or component replacement on an otherwise standard RX8. Choosing a quality new aftermarket part avoids the uncertainty of fitting a used component with an unknown service history. Always check the individual product's stated compatibility before ordering.

How do I know if an aftermarket part will fit my RX8?

Check the fitment and compatibility information listed on each individual product page before purchasing. The RX8 was produced in two series with some differences between them, so confirming your car's series and build details is important. If you are unsure, the product description will specify which variants or model years the part suits.

Can aftermarket parts be used as part of a performance build on an RX8?

Aftermarket parts are commonly used in performance-focused RX8 builds to refine specific areas such as response, cooling, control or power delivery. The key is selecting components that work together as part of a considered plan rather than fitting them in isolation. Review each part's intended application and how it interacts with the rest of your setup.

Is it safe to use aftermarket parts on a rotary engine like the RX8?

Rotary engines have specific operating characteristics that make part selection particularly important, and quality aftermarket components from reputable manufacturers are widely used on RX8s without issue. The critical step is ensuring the part is appropriate for its intended application and compatible with your car's current state of tune or modification. Always review individual product specifications and, where relevant, consult a specialist familiar with rotary engines.

Do aftermarket parts void my RX8's warranty?

Warranty implications depend on the age of your vehicle, the nature of the warranty in question, and Australian consumer law as it applies to your situation. Most RX8s in circulation are well beyond their original manufacturer warranty period. For any vehicle still under a dealer or extended warranty, it is worth confirming with that provider before fitting non-genuine components.

Are RX8 aftermarket parts available for both Series 1 and Series 2 models?

Availability varies by part and category. Some aftermarket components are compatible across both RX8 series, while others are specific to Series 1 or Series 2 due to differences in engine management, body panels or other specifications. Each product listing will state which series or model years it suits, so always verify fitment before ordering.