Based our analysis and observation, there is 36.87% chance that the price of KN Universal X-Stream Clamp-On Air Filter High... will remain constant. Price of product might fluctuate around 3% from current price.*
Price History Graph
Offer PricePrices
Lowest: -
Average: -
Highest: -
Price History Information
You can check the price history of K&N Universal X-Stream Clamp-On Air Filter: High Performance, Premium, Replacement Filter: Flange Diameter: 3.3125 In, Filter Height: 4.25 In, Flange Length: 0.9375 In, Shape: Round, RX-4120-1 here. This product's current Price in USA is $154.02. The average and highest prices are $132.52 and $154.02 respectively.
Lowest Ever Price
$117.59
5th Mar 2026
Average Price
$132.52
Based on 138 days price tracking
Highest Price
$154.02
10th Jul 2026
Current Price in USA
Price
$154.02
Recent Price Drops on K&N Universal X-Stream Clamp-On Air Filter: High Performance, Premium, Replacement Filter: Flange Diameter: 3.3125 In, Filter Height: 4.25 In, Flange Length: 0.9375 In, Shape: Round, RX-4120-1
Price Drop4th Mar 2026
$140.50→$117.59
16.31% drop
Product Information
Details
Product Name
K&N Universal X-Stream Clamp-On Air Filter: High Performance, Premium, Replacement Filter: Flange Diameter: 3.3125 In, Filter Height: 4.25 In, Flange Length: 0.9375 In, Shape: Round, RX-4120-1
Store Product Code
B000COC52A
Store Name
amazon.com
Brand
K&N
Rating
10 / 10
Category
Air Filters
Product Manufacturer
K&N Engineering
Model Number
RX-4120-1
Model Number
RX-4120-1
Dimensions
4.25"L x 4.25"W x 4.25"H
Features
ENGINEERED POWER: State-of-the-art air filter media is designed to increase horsepower and acceleration as well as improve overall engine performance
4 LAYERS OF PROTECTION: Multiple layers of premium cotton gauze treated with a specially-designed tacking agent work together to create an intricate mesh of engine filter media that is designed to block and trap harmful contaminants
RUGGED CONSTRUCTION: K&N Universal Air Filters are manufactured with durable, premium materials and state-of-the-art construction methods to last a lifetime
CLEAN ONCE EVERY 5 YEARS: Engine air filter only needs cleaning every 75,000 miles under normal highway driving conditions (5 years based on the average miles driven per year of 15,000 miles)
EASY INSTALLATION: K&N Air Filters are pre-oiled and ready to drop into your factory air box- they are one of the easiest and most cost-effective vehicle upgrades for quick performance gains
UNIVERSAL FITMENT: Designed for use on a variety of applications
REDUCES WASTE: Over 200 million disposable air filters and their packaging waste wind up in landfills each year- reusable filters help reduce waste in our landfills
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KN Universal X-Stream Clamp-On Air Filter High has 10 rating out of 10. You can rate this product at product review page.
* Predictions is created on based of past prices and trends, it does not guarantee that it will happen. These are just prediction for theoretical information only.