FB421/01
OEM CROSS REFERENCE: BMW 13717521023; BMW 1371752103701; BMW 13717521037
**PLEASE LOOK BELOW FOR FULL COMPATIBILITY LIST**
BMC air filter FB421/01 is an exact fit for numerous BMW vehicles. This BMC air filter matches perfectly to your BMW’s air box. No modification necessary. Look below for the full compatibility list.
The air filters manufactured by BMC are made to stop smaller particles than OEM paper filters while still flowing a higher volume of air, all helping to increase your vehicle’s power.
BMC Racing is an Italian based company which specializes in high performance motorcycle and automotive air filters. BMC is the, “Choice of Champions,” being used in Formula 1, the 24 Hours of Lemans, WRC, and many more professional circuits around the world. When BMC started manufacturing automotive filters in 1991, they quickly became the standard in the racing world, as well as the standard for performance enthusiasts across the globe.
BMC’s filter frames are crafted using a “Full Moulding” technique. This creates a single mould without any welded joints, which enhances rigidity and avoids easy breakage under spirited driving. BMC air filters are made using high quality, multi-layered cotton gauze which is soaked in a low viscosity oil. The cotton is then covered with an epoxy coated alloy mesh. This epoxy coating protects from petrol fumes and oxidation. All of this together creates the best air filter available for your automobile.
BMC air filters can be regenerated and reused. Once the saturation level has been reached the filter can be renewed through a process of washing and re-oiling using our optional BMC filter washing kit.
Fits:
-
BMW
- 5 SERIES (E60/E61) 520 I (HP 170 | YEAR 07 > 10)
- 5 SERIES (E60/E61) 540 I (HP 306 | YEAR 05 > 10)
- 5 SERIES (E60/E61) 545 I (HP 333 | YEAR 03 > 05)
- 5 SERIES (E60/E61) 550 I (HP 367 | YEAR 05 > 10)
- 6 SERIES (E63/E64) 645 CI (HP 333 | YEAR 03 > 05)
- 6 SERIES (E63/E64) 650 CI (HP 367 | YEAR 05 > 11)
WHY BMC?
BMC Air Filters are the premium air filters for any automobile. BMC began manufacturing air filters in 1990, and since then have become the standard for professionals and enthusiasts alike. The air filters manufactured by BMC are made to stop smaller particles than OEM paper filters while still flowing a higher volume of air, all helping to increase your vehicle’s power.
BMC air filters are manufactured in Italy using high quality, multi-layered cotton gauze that is soaked in a low viscosity oil. Harmful materials which carry a negative charge are caught in the positively charged oil, separating these materials from the air your engine is breathing. The oil soaked cotton is then covered with an epoxy coated alloy mesh. This epoxy coating protects from petrol fumes and oxidation. BMC’s filter frames are crafted using a “Full Moulding” technique, creating a single mould without any welded joints, enhancing rigidity and helping avoid easy breakage under spirited driving. All of this together creates the best air filter available for your automobile.
BMC filters are also 100% rechargeable by using a BMC washing kit. Whenever the filter needs serviced it can be completely rejuvenated by a washing and re-oiling procedure. Stock filters need to be replaced frequently and are not washable. BMC filters never need to be replaced, only washed. This makes a BMC air filter more cost effective than stock filters, and also reduces environmental waste.
With a BMC air filter you will experience higher performance, more protection for your engine, and lower operating costs than stock paper filters. Winning race teams from Formula 1, 24 Hours of Le Mans, WRC and more have all used the “Choice of Champions” in their cars. It’s easy to see why adding a BMC filter is the easiest and most effective modification for your vehicle. Your automobile deserves a filter that was designed by Italian engineers specifically for its air box. Unleash your car’s untapped potential with the best performing air filter on the market.
SHIPPING & RETURNS
Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received a filter other than the one ordered or a defective item, etc.).
Returns are unavailable for special order filters that we do not normally stock. Be sure the filter you are asking us to special order is the correct one for your vehicle. Prior to ordering we will assist you with any questions regarding the filter you are requesting.
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, please Contact Us with your order number and details about the product you would like to return. We will respond quickly with instructions for how to return items from your order.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Most orders are shipped out the same day they are placed. Cut-off time for same day shipping in 4pm EST.
Please also note that the shipping rates for many items we sell are weight-based. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.