Machined red anodised aluminium cap lifts the most-handled service point on a Series 1 engine bay from functional to finished.
$60
An RX8 screw type oil cap is a small part that sits in plain sight every time the bonnet opens. AUTOEXE’s machined aluminium replacement (A1420-03) suits the screw-type oil-fill arrangement on 2003-2008 Series 1 models and turns a routine service point into a deliberate detail. It suits owners who want every visible component beneath the bonnet to reflect the same standard as the rest of the build.
For RX8 enthusiasts, the difference shows up at every oil check. A cap that once blended into the background becomes a finished detail rather than an afterthought. It is the kind of touch that completes an engine-bay presentation without demanding further attention.
Pair this RX8 screw type oil cap with the AUTOEXE Sports Clutch Kit and the AUTOEXE Lower Arm Bar (Front) to extend the same brand and finish language across the build. The GREDDY TRUST Oil Filter is another Series 1-specific service-area upgrade worth adding at the same time. Owners can verify AUTOEXE’s full product range at the AUTOEXE official website.
| RX8 Model | |
|---|---|
| Colour |
Related RX8 Upgrades
Yes. The AUTOEXE A1420-03 oil filler cap is designed specifically for Series 1 RX8 models (2003-2008) that use a screw-type oil-fill arrangement. If your car is a Series 2 (2009-2011), this cap is not the correct fitment, so check the Series 2 variant before ordering.
Series 1 RX8 models (2003-2008) use a screw-type oil filler cap that threads directly onto the filler neck. Series 2 models use a different push-and-turn design. The two are not interchangeable, which is why AUTOEXE produces a separate cap (A1420-03) specifically for Series 1.
The cap is machined from aluminium and finished with a red anodised coating. Anodising is integral to the metal surface rather than a paint layer, so the colour holds up well against engine heat and regular cleaning products encountered during routine oil checks and service work.
Based on the verified product details, the AUTOEXE A1420-03 is listed specifically for the 2003-2008 Series 1 RX8 screw-type filler arrangement. Fitment on other Mazda models with a visually similar cap is not confirmed, so it is safest to treat it as an RX8 Series 1 part.
Yes. AUTOEXE produces separate cap variants for the Series 1 and Series 2 RX8 because the filler arrangements differ. The A1420-03 part number confirms you are getting the correct Series 1 screw-type fitment rather than a generic or incorrect variant.
It does. The red anodised finish matches the colour language used across AUTOEXE's engine-bay range. Pairing it with other AUTOEXE red-finished components gives the engine bay a cohesive, intentional look rather than a mix of mismatched aftermarket pieces.
The GREDDY TRUST Oil Filter is a Series 1-specific upgrade that makes sense to do alongside a cap change, since both are part of the same service area. Sourcing them together keeps the job tidy and means the most visible service points are refreshed in one go.
