Swap the factory plastic brake reservoir cap for a red anodised aluminium piece that adds a deliberate colour accent to an often-overlooked engine-bay detail.
$80
This Mazda RX8 brake fluid cap from AUTOEXE replaces the standard plastic reservoir cover with a red anodised aluminium unit. It fits every RX8 produced from 2003 to 2012. The target is the builder who wants a consistent colour theme across the engine bay, not just the headline parts.
For RX8 enthusiasts building a considered engine bay, this brake fluid cap earns its place in a way a plain service cap never does. Lift the bonnet at a show or during a routine check, and a neatly finished reservoir matches the intention of everything around it.
The red anodised theme carries well to the exterior with the LEG MOTORSPORT Anodized and UV Resistant Rear Window Button x2 (Red), extending the same colour accent to the window controls. For a practical under-bonnet companion, the CUSCO Strut Brace Type OS (Front) with Brake Cylinder Stopper adds structural benefit alongside this Mazda RX8 brake fluid cap.
To keep the fluid itself in top condition, R-MAGIC Super High Temp Racing Brake Fluid is the logical next step under the same cap. Explore the full range at AUTOEXE Japan.
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Related RX8 Upgrades
Yes, the AUTOEXE brake fluid cap is a direct drop-in fit for all Mazda RX8 models from 2003 to 2012, covering both Series 1 and Series 2 without any modification required.
It is machined from aluminium and finished with a red anodised coating. This gives it a significant durability advantage over the factory plastic cap, resisting the fading and staining that plastic accumulates over years of under-bonnet exposure.
AUTOEXE's anodising is known for durable colour retention in under-bonnet conditions. Unlike factory plastic caps, which yellow and stain with age, the anodised aluminium maintains its finish through regular fluid checks and temperature cycles.
The cap replaces the OEM reservoir cap with a direct-fit aluminium piece, so it performs the same sealing function as the original. The primary reason to fit it is the finish upgrade, making it a cosmetic choice that also replaces an ageing plastic component with a more durable material.
The red anodised cap pairs naturally with other red anodised under-bonnet and exterior details. The CUSCO Strut Brace with Brake Cylinder Stopper works alongside it in the same brake system area, while the LEG MOTORSPORT Anodized Rear Window Buttons in red extend the colour accent to the exterior.
Installation is straightforward - it is a direct replacement for the standard reservoir cap with no modification required. Simply remove the factory cap and thread or press the AUTOEXE cap into place.
Based on the available product information, this AUTOEXE brake fluid cap is offered in red anodised aluminium. Check the full AUTOEXE range for any additional colour options.
