BMW E9x M3 S65 Billet Valve Covers

The first 20 sets are being offered at cost—a thank-you to the community that’s followed this journey from the start. A set includes the Oil Baffle plates.  

Why Billet > Magnesium & Cast

While cast aluminum is widely used and generally effective, its manufacturing process—pouring molten metal into molds—introduces porosity, inconsistent grain structure, and potential warping. These factors reduce structural integrity and can compromise sealing surfaces over time. In contrast, EAE valve covers are CNC-machined from solid 6061-T6 billet aluminum. This results in a finer, uniform grain structure, superior tensile strength, and exceptional dimensional stability, making it the optimal choice for applications where heat cycling, sealing integrity, and mechanical reliability are critical.

When it comes to valve covers, this process delivers uniform strength, precise tolerances, and exceptional thermal stability—significantly outperforming cast or OEM magnesium components.

Built to Last. Not Just to Look Good

We’ve updated our standard finishes to Cerakote and hard anodizing, both of which outperform traditional powder coating in key ways that matter for engine bay applications.

Why Cerakote is Now Our Standard Finish:

Cerakote is a ceramic-based coating originally designed for aerospace and firearms — which makes it perfect for high-heat, high-stress environments. Here’s why we prefer it as our standard option: 

• Thin and Precise – Cerakote goes on in a liquid form and cures at a low temperature, preserving the critical tolerances required around gasket surfaces and grooves. No risk of warped parts or poor sealing.
• Extremely Durable – It forms a tough, corrosion-resistant barrier against oil, fuel, solvents, and heat cycling — with none of the chipping or peeling sometimes seen with powder coat.
• Customizable Color Matching – If you have a specific color in mind, just send us a color code or photo reference, and we’ll Cerakote your valve cover to match — typically in just 2–4 days.

 Prefer the classic look of anodizing? We still offer hard anodized covers as well for an additional cost. 

We no longer recommend powder coating for valve covers due to the risk of part warping (from high-temp baking) and thickness buildup that can compromise gasket sealing. If requested, we can still offer it, but our preferred finishes are Cerakote and hard anodizing — finishes that meet the demands of serious builds without compromise.

Why We Made These Valve Covers 

A message from EAE Motorsports

This project started as a simple idea I posted a few years ago—just drawings and a dream, with no shop or resources to make it real. Along the way, I hit roadblocks, lost money to unreliable vendors, and almost gave up more than once. But the passion never left. Eventually, I found a small machine shop in Maryland whose work was spot-on. When the first set was ready, I flew the owner out, and we installed them in my garage—everything fit like a glove.

Now, after all the ups and downs, these covers are finally in production. Whether I sell one or a hundred, just having them finished and on my car is a win. If you’re working on something of your own, don’t stop. The process is the reward.

Go behind the scenes from CAD to final prototype and see how each cover is engineered, machined, and brought to life. Watch Here.