BMC FB643/08 Replacement Cylindrical Air Filter for Alfa Romeo Giulietta 940

The BMC FB643/08 is a high-performance replacement cylindrical air filter designed as a direct drop-in upgrade for the Alfa Romeo Giulietta (940). It installs into the vehicle's original airbox in place of the OEM filter, requiring no modifications for a straightforward, bolt-in fit.

Manufactured in Italy using BMC's proprietary "Full Moulding" process — the same technology developed through their Formula 1 R&D program — the filter is formed from a single mould with no welded joints, improving structural integrity and long-term durability.

Key Features:

• Filter media consists of multi-layered oiled cotton gauze soaked in low-viscosity mineral oil for superior air permeability
• Covered with an epoxy-coated alloy mesh to protect against fuel vapors and oxidation from moisture
• Captures particles as small as 7 microns — finer than the typical 10-micron threshold of OEM paper filters
• Delivers increased airflow to the engine compared to a conventional paper or foam OEM filter
• Washable and reusable — can be cleaned and re-oiled using a BMC washing kit, giving the filter a service life equal to that of the vehicle
• Durable rubber surround is non-deformable over time with excellent adhesion to all airbox shapes
• OEM Cross Reference: Fiat Group 51807688

Technical Specifications:

• Type: Cylindrical (Replacement)
• Inner Diameter: 95 mm (3.74 in)
• Outer Diameter: 140 mm (5.51 in)
• Height: 219 mm (8.62 in)
• Filter Material: Oiled Cotton Gauze

The BMC FB643/08 is an ideal upgrade for drivers seeking improved engine breathing and reduced maintenance costs over the long term, while retaining full compatibility with the factory airbox.