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Upgrade your BMW with the K&N Engineering Part 33-2059 High-Flow Reusable Air Filter, designed specifically for models including 1991-1994 BMW 318i, 318is, 325i, and 318iX. This high-performance filter features a layered, oiled cotton media engineered to maximize airflow, which can lead to an increase in horsepower and improved engine efficiency. Its advanced design allows for superior contaminant capture while maintaining optimal airflow, making it an ideal choice for enthusiasts seeking enhanced vehicle performance.
Constructed to be washable and reusable, this filter is engineered for longevity and durability, capable of lasting the entire lifespan of your vehicle. Its drop-in design ensures a straightforward installation process, fitting seamlessly into your factory air box without modifications. Backed by K&N's 10-Year/Million Mile Limited Warranty, this filter offers peace of mind and reliable performance for years to come.
In addition to boosting horsepower, the K&N High-Flow Air Filter provides exceptional engine protection by trapping harmful particles that can cause wear and damage. Its proprietary layered cotton media is treated with special oil to enhance particle filtration and airflow, resulting in better engine breathing and more power. Whether you're a daily driver or a performance enthusiast, this filter is an excellent upgrade that combines convenience, durability, and performance. Keep your BMW running at its best with the trusted quality of K&N Engineering, and enjoy superior airflow and engine protection with a product designed to meet the demands of both casual and spirited driving.
Features:
Fitment:
1986 BMW 325 Base
1986 BMW 325e Base
1986 BMW 325es Base
1986 BMW 528e Base
1987 BMW 325 Base
1987 BMW 325e Base
1987 BMW 325es Base
1987 BMW 325i Base
1987 BMW 325is Base
1987 BMW 528e Base
1988 BMW 325 Base
1988 BMW 325i Base
1988 BMW 325is Base
1988 BMW 325iX Base
1988 BMW 528e Base
1988 BMW 750iL Base
1989 BMW 325i Base
1989 BMW 325is Base
1989 BMW 325iX Base
1989 BMW 525i Base
1989 BMW 750iL Base
1990 BMW 325i Base
1990 BMW 325is Base
1990 BMW 325iX Base
1990 BMW 525i Base
1990 BMW 750iL Base
1991 BMW 318i Base
1991 BMW 318is Base
1991 BMW 325i Base
1991 BMW 325is Base
1991 BMW 325iX Base
1991 BMW 525i Base
1991 BMW 750iL Base
1991 BMW 850i Base
1992 BMW 318i Base
1992 BMW 318is Base
1992 BMW 750iL Base
1992 BMW 850i Base
1993 BMW 318i Base
1993 BMW 318is Base
1993 BMW 750iL Base
1993 BMW 850Ci Base
1994 BMW 318i Base
1994 BMW 318is Base
1994 BMW 750iL Base
1994 BMW 850Ci Base
1994 BMW 850CSi Base
1995 BMW 850Ci Base
1995 BMW 850CSi Base
1996 BMW 850Ci Base
1997 BMW 850Ci 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).
