Carbon Fiber Rear 3rd Brake Light Diffuser – BMW F30 3 Series
Elevate your rear‑end styling with this Carbon Fiber 3rd Brake Light Diffuser designed for the BMW F30 3 Series. Crafted to fit cleanly above the OEM brake light housing, it adds a subtle motorsport silhouette to the OEM rear profile. This lightweight carbon accent completes the rear look — no cutting, no fuss, just clean, refined fitment.
Engineered for enthusiasts who want detail-oriented upgrades that blend with factory design language, this piece is the perfect finishing touch to tie together a carbon aero build on the F30 platform.
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Key Features
• Overlay diffuser integrated above the OEM third brake light housing
• Constructed from real carbon fiber with a 2x2 twill weave pattern
• Gloss UV-resistant clear coat for long-term finish clarity
• Lightweight and sleek aesthetic add-on that enhances rear presence
• Matte and forged carbon fiber options available upon request
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Compatible Models
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BMW F30 3 Series (2012–2018, Sedan)
Fits both M Sport and factory rear bumper applications.
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What’s Included
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(1) Carbon Fiber 3rd Brake Light Diffuser
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Pre-applied adhesive or molded mounting tabs (varies by batch)
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Installation hardware not included on most products
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Why Buy From Eterna Motorworks
Eterna Motorworks is the standard in premium aftermarket automotive parts and services. With over a decade of hands‑on experience, we’ve earned the trust of enthusiasts and professional builders worldwide by delivering unmatched quality, precision fitment, and long-term credibility. Every part and service we offer is curated to meet the highest expectations in styling, performance, and reliability — both on the road and in the shop.
If you’re searching for a trusted partner to set your build apart — welcome to the team.
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Professional installation is highly recommended.
Installation hardware not included on most products.
For full fitment, installation, and store policy details, please refer to our policies before purchasing.
Worldwide shipping available upon request.
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Your next mod starts here. Upgrade your build the right way with Eterna Motorworks.
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Carbon Fiber Rear 3rd Brake Light Diffuser – BMW F30 3 Series
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Product Questions
Will this fit my vehicle?
This part is made for the models listed above. If you’re unsure, send us your year, make, and model and we’ll confirm fitment for you.
What’s included?
You’ll receive exactly what’s shown. Hardware is not included unless the product description says otherwise.
How difficult is installation?
We recommend professional installation. If you’re local, you can book an install with us directly. Some parts may need trimming, drilling, or adjustment depending on your setup.
Do you ship internationally?
Yes, we ship worldwide. Contact us if you need help placing an international order.
How do I confirm fitment before ordering?
Fitment details are listed on each product page. If you’re unsure or your build has unique specs, submit the form and our team will verify compatibility before you order.
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With over a decade of hands on experience, a growing portfolio of award winning show builds, and direct relationships with top-tier brands, we make sure you get premium products, trusted service, and real automotive expertise. Our team has built multiple award winning vehicles featured at top tier shows like SEMA and Bimmer Invasion. Everything we offer is tested, trusted, and backed by real world experience.
Eterna Motorworks can source or special-order nearly any component for your build — OEM-fitment parts, performance upgrades, carbon fiber aero, suspension, wheels, and even bespoke options depending on the platform. Click here to contact our team.
