K&N E-0940 High-Flow Air Filter for 1994-04 Ford Mustang 3.8L/5.0L

Vehicle Fitment

• 1994-2004 Ford Mustang (3.8 L V6 and 5.0 L V8) - series determined by factory engine

Features

• Washable and reusable high-flow cotton gauze media
• Drop-in replacement for the factory air filter - no modifications needed
• Designed to improve airflow, increase horsepower and throttle response
• Durable construction engineered for long service life
• Service interval up to approx. 75,000 miles under normal highway driving
• Street-legal in all 50 states when used as OE replacement in approved vehicles
• Lifetime limited warranty when maintained according to instructions
• Eco-friendly reusable design reduces waste and long-term maintenance cost

Specifications

• Height: 7.375 in (187 mm)
• Base outside diameter: 6.50 in (165 mm)
• Base inside diameter: 3.25 in (83 mm)
• Filter media: Oiled cotton gauze
• Shape: Tapered conical/drop-in design for Mustang factory air box
• Filter efficiency: Up to 99% under designed conditions

Included Components

• 1x K&N E-0940 air filter element
• Installation instruction sheet

Product Description

The K&N E-0940 is a premium high-flow drop-in replacement air filter specifically engineered for the 1994 through 2004 Ford Mustang models equipped with either the 3.8 L V6 or the 5.0 L V8 engine. It replaces the factory paper element with a reusable cotton-gauze filter media designed to maximize airflow while maintaining effective contaminant filtration and long-term durability.

Installation is straightforward: remove the stock air filter from the factory air box and install the E-0940 - no cutting, no tuning, no additional hardware required. Built for Mustang owners who want improved engine breathing, better throttle response and reduced maintenance waste over time.

With its washable and reusable design, long service interval and lifetime limited warranty, this filter is especially suited for Mustang drivers seeking performance and longevity. Please note: fitment is verified for model years 1994-2004 only; coverage for 2005-2025 is unconfirmed at time of listing.