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Therrien Works

AN10 Valve Cover Breather Adapter For M5x Engines (Coming Soon!)

AN10 Valve Cover Breather Adapter For M5x Engines (Coming Soon!)

Regular price $14.99 USD
Regular price Sale price $14.99 USD
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Upgrade your engine bay with these custom AN10 valve cover fittings, 3D printed from durable PETG for heat resistance, strength, and a clean finish. Designed to fit directly into the stock valve cover ports, they make routing your PCV or breather lines to a catch can easy and tidy.

Made in small batches right here in the shop, these fittings aren’t mass-produced — they’re crafted for enthusiasts who care about fit, function, and reliability under the hood.

This item is still in its testing phase, and will be available soon! I want to make sure this part holds up to the standards that I expect it to.

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