The BMC FB821/04 Air Filter is a high-quality replacement air filter designed to improve air flow and filtration in your vehicle's original airbox. Made from durable materials that offer increased efficiency, this air filter can capture impurities as small as 7 microns, compared to the OEM standard of 10 microns. The Full Moulding system used in the production of BMC air filters ensures a strong, long-lasting construction with no welded joints that could easily break.

With a multi-layered cotton gauze soaked in low viscosity oil and covered with an epoxy coated alloy mesh, this BMC air filter offers superior protection against petrol fumes and air humidity, preventing oxidization and ensuring a clean air intake for your engine. The washable design allows for easy maintenance and regeneration using the BMC regeneration kit, making it a cost-effective and environmentally friendly choice for air filter replacement.

Backed by a 2-year limited warranty, the BMC FB821/04 Air Filter is a reliable and efficient option for upgrading your vehicle's air filtration system. With dimensions of 149mm width and 367mm length, this air filter is compatible with various BMW models, including those with part codes 13718510239, 1371851239, and 13718518111. Enhance the performance of your vehicle with the BMC air filter, designed for durability, efficiency, and easy maintenance.