The Karbonius E46 Carbon Cabin Filter Cover is a precision carbon fiber reproduction of the factory plastic microfilter cover (OEM part number 64318363423), bringing a premium carbon aesthetic to one of the most accessible interior upgrade points on the E46 platform. At just 150 grams, this high-quality piece retains the OEM twist-lock mounting hardware for a factory-style installation that takes only minutes.

Manufactured from 100% prepreg carbon fiber and cured in mold and autoclave at Karbonius' facility in Spain, the cover delivers the finest finish available in its class, with superior thermal and structural stability over the original plastic unit. The high-gloss varnish finish accentuates the carbon fiber weave and provides UV protection for long-term durability.

Each piece is individually numbered to guarantee authenticity and origin — a hallmark of Karbonius composites.

What's Included

• Carbon fiber cabin filter cover
• OEM twist locks
• Numbered certificate of authenticity

Product Details

• Direct replacement for OEM part number 64318363423
• Lightweight design: 150 g
• 100% prepreg carbon fiber construction
• Cured in mold and autoclave for superior thermal and structural stability
• High-gloss varnish finish with UV protection
• Uses OEM twist locks for easy installation
• Individually numbered for authenticity
• 2-Year manufacturer warranty

Vehicle Applications

• BMW E46 M3
• BMW E46 3-Series

Recommended Upgrades

• Karbonius E46 M3 S54 Carbon Engine Cover - Vented
• Karbonius E46 M3 CSL Concept S54 Engine Cover
• Karbonius E46 M3 CSL Carbon Center Console (LHD)

Notes

• Designed and manufactured in Spain by Karbonius Composites under ISO 9001 standards
• Professional installation recommended