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K&N 18-19 Yamaha YZ450F Replacement Air Filter K&N Engineering KNNYA-4518XD
K&N 18-19 Yamaha YZ450F Replacement Air Filter K&N Engineering KNNYA-4518XD
K&N 18-19 Yamaha YZ450F Replacement Air Filter K&N Engineering KNNYA-4518XD
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K&N 18-19 Yamaha YZ450F Replacement Air Filter

KNNYA-4518XD
024844373083
Air Filters - Drop In
20+ Units In Stock - Ships Next Business Day
$ 108.00 $ 75.99
$ 75.99

SKU: YA-4518XD | UPC: 024844373083

K&N YA-4518XD Replacement Air Filter for 2018-2022 Yamaha YZ450F, YZ250F, YZ450FX & More

The K&N YA-4518XD is a washable replacement air filter for Yamaha off-road bikes like the 2018-2022 YZ450F. It boosts airflow for added horsepower and acceleration while trapping dirt in extreme conditions. Pre-oiled and designed to drop into the OEM airbox, it supports clean carburetion at high altitudes without jet changes.

Key Features

  • Washable and Reusable: High airflow with excellent filtration lasts through dirty off-road riding, easy to clean and reinstall multiple times
  • Dual-Stage Design: Run without foam for track performance gains or add foam pre-filter for trail endurance in dust
  • Power Gains: Engineered to increase horsepower and acceleration with pre-oiled cotton media
  • OEM Direct Fit: Seals precisely in stock airbox on Yamaha YZ450F, YZ250F and compatible models, ready to ride out of the box
  • One-Year Warranty: Special off-road media and unoiled foam insert provide maximum protection

Product Notes

  • Unoiled foam pre-filter cleans easily with soap and water, reuse after drying
  • Filter element washes with K&N cleaner, re-oil for peak performance
  • Packaged securely for fast delivery, handles rough trails immediately

Installation Notes

  • Professional installation recommended.
  • Remove stock filter, insert YA-4518XD directly into OEM airbox
  • No modifications or extra hardware needed, seals with stock components

This Part Fits

Year Make Model Submodel
2019-2020 Yamaha WR450F Base
2019-2022 Yamaha YZ250F Base
2021-2022 Yamaha YZ250F Monster Energy Yamaha Racing Edition
2018-2022 Yamaha YZ450F Base
2021-2022 Yamaha YZ450F Monster Energy Yamaha Racing Edition
2019-2022 Yamaha YZ450FX Base

Why Choose K&N?

  • Proven in motocross and off-road racing since 1969
  • Cotton gauze media flows more air than paper filters
  • Exact engineering matches Yamaha airbox for leak-free seal

Frequently Asked Questions

  • Q: Will this fit my 2020 Yamaha YZ450F?
    A: Yes, YA-4518XD fits 2018-2022 YZ450F Base models and 2021-2022 Monster Energy editions directly in the OEM airbox
  • Q: Do I need the foam pre-filter?
    A: Remove for maximum track airflow or install dry foam for dusty trail protection and longer service intervals
  • Q: How is warranty handled?
    A: Backed by one-year limited warranty, contact K&N with proof of purchase for service

Shipping & Handling

  • Method: UPS Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Protective box 9.25 x 7.5 x 2 inches
  • Weight: 0.6 lbs
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