High-Performance Panel Filter for BMW 5 (E60) & 6 (E63) Series
The BMC Air Filter FB421/01 is a precision drop-in panel filter engineered for multiple BMW 5 (E60) and 6 (E63) Series models. With BMC’s Full-Moulding red rubber frame and multi-layer oiled cotton gauze media supported by epoxy-coated mesh, it boosts intake efficiency while filtering fine particles (~7 µm). Designed for direct installation in the OEM airbox—no modifications needed.
Why Choose the BMC FB421/01 Air Filter?
- Better Airflow & Filtration: Higher intake volume with effective containment of fine particulates (~7 µm vs ~10 µm OEM paper)
- Washable & Reusable: Serviceable with a BMC regeneration kit—eliminate frequent disposable replacements
- Full-Moulded Seal: One-piece red rubber frame ensures rigidity and tight sealing with no welds or joints
- OEM Drop-In Fit: No trimming or tuning required—fits factory airbox directly
- Durable Build: Epoxy-coated mesh guards media from fuel vapors and environmental oxidation
Fitment & Vehicle Compatibility
| OEM Cross References | BMW 13717521023, 13717521037 / 3701 |
| Compatible Models |
BMW 5 Series (E60 / E61) – 520i (2007-2010), 540i (2005-2010), 545i, 550i BMW 6 Series (E63 / E64) – 645Ci, 650i (2003-2011) |
| Filter Type | Panel (single element) |
| Dimensions (mm) | Outside Width / Base Inner Diameter: 184 / 273 mm Outside Length / Base Outside Diameter: 312 mm |
| Media / Material | Pre-oiled multi-layer cotton gauze with epoxy-coated alloy mesh |
| Filtration Efficiency | ~7 µm (vs ~10 µm typical OEM paper) |
| Washable / Reusable | Yes — compatible with BMC regeneration kit |
| Package Contents | 1 × BMC Panel Air Filter (FB421/01) |
| Warranty | 2-Year Limited Coverage |
Cross-references and applications verified against BMC’s official data and BMW specialist sources. Always confirm via VIN and inspect airbox before purchase.
The BMC Advantage
Motorsport-grade materials and precision manufacture deliver smoother airflow, sharper throttle response, and lasting value — all while preserving OEM reliability for your BMW.
Need installation help? Check our Installation Guide or browse the full BMW Air Filter Collection.
Equip your 5 or 6 Series with the BMC FB421/01 air filter — engineered for airflow, protection, and endurance.
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