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Enhance your BMW*s engine performance with the K&N Engineering High-Flow Drop-In Air Filter designed specifically for models including the 2004-2007 BMW 545i, 2006-2007 BMW 650i, and 2005-2006 BMW 550i. Crafted with layered, oiled cotton media, this filter optimizes airflow to your engine, resulting in increased horsepower and improved acceleration. Its advanced design ensures superior filtration, capturing contaminants while allowing more air to reach your engine, which can lead to noticeable performance gains and better fuel efficiency. Constructed for durability, this reusable filter is engineered to last for the entire lifespan of your vehicle, offering long-term value and consistent performance. Installation is straightforward, as it is a drop-in replacement that fits seamlessly into your factory air box, requiring no additional modifications. Backed by K&N*s 10-Year/Million Mile Limited Warranty, it provides peace of mind and reliable service over many miles of driving. Whether you're aiming to boost your vehicle's power or seeking an easy upgrade to improve engine breathing, this filter is an ideal choice for enthusiast and daily driver alike. Designed to meet strict quality standards, it*s a proven solution to enhance your BMW's engine efficiency and performance. Keep your engine protected and performing at its best with the trusted quality of K&N Engineering. This product is not CARB-optimized but is suitable for most performance applications, and it complies with necessary regulations for safe, dependable operation.
Features:
Fitment:
2004 BMW 545i Base
2004 BMW 645Ci Base
2005 BMW 545i Base
2005 BMW 645Ci Base
2006 BMW 550i Base
2006 BMW 650i Base
2007 BMW 550i Base
2007 BMW 650i Base
2008 BMW 550i Base
2008 BMW 650i Base
2009 BMW 550i Base
2009 BMW 650i Base
2010 BMW 550i Base
2010 BMW 650i Base
Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.
Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.
Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
