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Upgrade your vehicle's factory air box with the K&N Engineering 33-2041-1 High-Flow Drop-In Air Filter. This replacement automotive air filter uses layered, oiled cotton media engineered to improve airflow while capturing contaminants for exceptional engine protection.
Designed as a reusable alternative to disposable filters, this K&N filter is engineered to last for the lifespan of your vehicle and is washable for repeated use. Its drop-in design is intended to install easily into the factory air box, helping support increased horsepower and improved engine airflow.
The K&N 33-2041-1 air filter is proudly made in the USA and backed by K&N's 10-Year/Million Mile Limited Warranty. For filter maintenance, K&N lists the 99-5000 Filter Care Service Kit Aerosol as an associated product. This filter fits the 1993 Toyota Corolla, 1990 Toyota Corolla, and 1991 Toyota Corolla applications listed by the supplier, as well as 00-05 Celica GT and GT-S applications identified in the product name.
Features:
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).
