BMC Air Filter FB121/01 – BMW 3 Series (E36 316i/318i) & Z3
BMC Air Filter FB121/01 – BMW 3 Series (E36 316i/318i) & Z3
High-Flow Panel Filter for BMW E36 & Z3 Platforms
The BMC Air Filter FB121/01 is a precision drop-in panel filter made for BMW E36 and Z3 models. With BMC’s Full-Moulding red rubber frame and multi-layer oiled cotton gauze backed by epoxy-coated alloy mesh, it enhances intake flow while filtering down to ~7 µm (versus ~10 µm for standard paper filters). It installs into the factory airbox—no trimming or tuning required.
Why Choose the BMC FB121/01 Air Filter?
- Improved Airflow & Filtration: Increased intake volume while capturing fine particulates (≥ 7 µm).
- Washable & Reusable: Serviceable with the BMC regeneration kit—no disposable replacements.
- Full-Moulded Frame: One-piece red rubber provides rigidity and lasting sealing.
- OEM Drop-In Fitment: Direct replacement into stock airbox—no mods needed.
Fitment & Vehicle Compatibility
| OEM Cross References | BMW 13711247405, 13721247404, 13721247405, 13721247637 |
| Compatible Models |
BMW 3 Series (E36) — 316i, 318i (1992–1999) BMW Z3 — 1.8 / 1.9 variants (1996–2003) |
| Filter Type | Panel (single element) |
| Dimensions (mm) | Width 236 × Length 236 |
| 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 × Panel Air Filter (FB121/01) |
| Warranty | 2-Year Limited Coverage |
Applications and OEM cross-refs confirmed via BMC’s official data. Always verify via VIN and inspect your airbox before purchase.
The BMC Advantage
Race-heritage materials and precision design yield better airflow, sharper throttle response, and long-term value—while maintaining OEM reliability.
Need install help? Visit our Installation Guide or browse the full BMW Air Filter Collection.
Equip your BMW E36 or Z3 with the BMC FB121/01 air filter—engineered for airflow, protection, and endurance.