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K&N Drop-In Replacement Air Filter (81-82 4.2L)

Market Price $99.99 You Save 12% ($12.20)
Our Price

$87.79 (each)

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  • Item 399634
  • MPN# E-1180

In Stock Ships same business day. Choose options to add to cart

Features & Details

  • Increases Rate of Acceleration and Horsepower
  • Excellent Filtration and Air Flow
  • Pre-Oiled Cotton Gauze Construction
  • Round Filter Design (11” Outside Diameter)
  • Easy Drop-In Installation
  • Backed by K&N’s Million Mile Limited Warranty
  • Designed for Use with Stock Air Box
  • Fits all 1981-1982 Ford Mustangs with 4.2L Engines
Increased Airflow for Improved Performance. The K&N Drop-In Replacement Filter is designed for optimum airflow, increasing your Mustang’s rate of acceleration and overall horsepower. Replace your stock filter with the pre-oiled, cotton gauze filter by K&N, and you will see a big performance payoff for a quick and easy upgrade.

Excellent Construction. K&N takes pride in their products, and the drop-in replacement air filter is no exception. The multi-layered, oiled cotton design results in exceptional filtration and high air flow. The specialized oil used to pre-treat the filter ensures excellent engine protection from contaminants.

Washable, Reusable Filter. Get your money’s worth by washing and reusing the K&N filter, time after time. The filter is designed to last up to 50,000 miles before needing a cleaning, so you won’t have to add another weekly chore to your garage to-do list.

Drop-In Replacement. The K&N air filter is designed to drop directly into the existing factory air box, which makes installation quick and simple. Simple remove the factory filter and replace with the K&N version, upgrading your vehicle in just a few minutes.

Million Mile Limited Warranty. K&N Replacement Air Filters are covered by a Million Mile Limited Warranty when used for street vehicles. Some exclusions may apply, please see manufacturer's warranty for details.

Application. The K&N Drop-In Replacement Air Filter is designed to fit 1981-1982 Ford Mustangs with 4.2L engines.

Fitment: 1981 1982 Details

What's in the Box
  • (1) Air Filter
Installation Info
Will it fit my Mustang?
  • Foxbody - 81, 82

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