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Upgrade your BMW with the K&N 33-2367 high-flow air filter, designed to fit select models including the 2007 to 2011 BMW 135i, 335i, and 535i. Crafted with layered, oiled cotton media, this washable and reusable filter enhances airflow for improved engine performance and increased horsepower. Its innovative design ensures efficient contaminant capture while maintaining optimal airflow, helping to maximize your vehicle's power and efficiency. The filter is engineered for durability, providing a long-lasting solution that can be cleaned and reused throughout your vehicle's lifespan. Backed by K&N's 10-year/million-mile limited warranty, it offers peace of mind and reliable performance over time. Installation is straightforward as it is a drop-in replacement for your factory air box, allowing you to upgrade quickly without modifications. Experience superior airflow, enhanced engine protection, and the benefit of a high-quality product trusted by performance enthusiasts and everyday drivers alike. This filter is a perfect choice for those looking to optimize their BMW's engine performance with minimal effort and maximum results. Made with high-quality materials, it meets industry standards for durability and performance, ensuring your vehicle remains efficient and responsive. Whether you're seeking a boost in horsepower or longer-lasting filtration, the K&N 33-2367 filter is designed to deliver consistent performance, making it an essential upgrade for your BMW's air intake system.
Features:
* Layered, oiled cotton media for improved airflow and contaminant filtration
* Reusable and washable design for long-term use
* Easy installation as a drop-in replacement for factory air boxes
* Engineered to increase horsepower and engine efficiency
* Backed by K&N's 10-Year/Million Mile Limited Warranty
Fitment:
BMW 1 Series M Base 2011
BMW 135i Base 2008
BMW 135i Base 2009
BMW 135i Base 2010
BMW 335i Base 2007
BMW 335i Base 2008
BMW 335i Base 2009
BMW 335i Base 2010
BMW 335i xDrive Base 2009
BMW 335i xDrive Base 2010
BMW 335is Base 2011
BMW 335is Base 2012
BMW 335is Base 2013
BMW 335xi Base 2007
BMW 335xi Base 2008
BMW 535i Base 2008
BMW 535i Base 2009
BMW 535i Base 2010
BMW 535i xDrive Base 2009
BMW 535i xDrive Base 2010
BMW 535xi Base 2008
BMW Z4 sDrive30i 2010
BMW Z4 sDrive30i 2011
BMW Z4 sDrive35i 2009
BMW Z4 sDrive35i 2010
BMW Z4 sDrive35i 2011
BMW Z4 sDrive35i 2012
BMW Z4 sDrive35i 2013
BMW Z4 sDrive35i 2014
BMW Z4 sDrive35i 2015
BMW Z4 sDrive35i 2016
BMW Z4 sDrive35is 2011
BMW Z4 sDrive35is 2012
BMW Z4 sDrive35is 2013
BMW Z4 sDrive35is 2014
BMW Z4 sDrive35is 2015
BMW Z4 sDrive35is 2016
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).
