K&N KA-4018 Air Filter
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K&N KA-4018 Air Filter
The K&N KA-4018 Air Filter is your ultimate solution for enhanced engine performance and longevity. Engineered with precision and expertise, this air filter is designed to elevate your vehicle's efficiency while ensuring optimal filtration. Discover the key features that set this product apart:
- Increased Performance: The K&N KA-4018 is crafted to provide a noticeable boost in horsepower and acceleration.
- Large Filtration Area: Featuring a pleated media design, this filter offers a substantial filtration area that promotes long service intervals.
- Exceptional Filtration: Made with multi-layers of woven cotton gauze, it delivers outstanding filtration capabilities to protect your engine.
- Perfect Fit: Designed to fit directly into your OEM Airbox, it includes an application-specific sealing bead for a precise fit without any modifications.
- No Additional Modifications Needed: For most applications, you can enjoy increased performance without the need for fuel management changes.
- Trusted Quality: Proudly made in the USA with over 40 years of experience in air filter technology.
- Eco-Friendly: This filter is washable and reusable, pre-oiled and ready to install, making it both environmentally friendly and cost-effective.
Experience the difference with the K&N KA-4018 Air Filter and ensure your vehicle runs at its best. Upgrade your air intake system today!
Shipping & Returns
Shipping & Returns
Shipping:
Most qualifying in-stock orders are processed within one business day. In the contiguous 48 states, eligible in-stock orders placed before 12:00 PM (noon) in the customer's local time zone typically ship the same business day. Orders shipping to Alaska or Hawaii use a 12:00 PM Pacific Time cutoff (California time). These cutoffs apply only to eligible in-stock orders and are not guaranteed shipping or delivery times. Same-day shipping refers to processing and carrier handoff, not delivery. Weekends and holidays are excluded.
Payment verification, address verification, fraud review, and inventory availability may take longer. Supplier-direct fulfillment, freight shipping, and special handling may also take longer.
Returns:
Eligible products may be returned within 60 days of delivery, subject to our Return Policy. Return authorization is required. Certain products are final sale or subject to manufacturer warranty procedures, shipping charges, and applicable restocking fees.
Please inspect your order promptly upon delivery. Shipping damage, incorrect items, missing components, or quantity shortages must be reported within 3 business days after delivery. Retain the product, original packaging, shipping labels, and photographs while your claim is reviewed.

