K&N 33-3131 High-Flow Air Filter for 2018-2024 Ford Escape/Bronco Sport/Maverick

Vehicle Fitment

• 2020-2022 Ford Escape (S, SE, SE Sport, SEL, Titanium, 1.5L L3 Turbo Gas, 2.0L L4 Turbo Gas, FWD/AWD)
• 2021-2024 Ford Bronco Sport (Big Bend, Badlands, Outer Banks, Heritage, Heritage Limited, 1.5L L3 Turbo Gas, 2.0L L4 Turbo Gas, AWD)
• 2022-2024 Ford Maverick (XL, XLT, Lariat, Tremor, 2.0L L4 EcoBoost Gas, FWD/AWD)
• 2018-2022 Ford Focus IV (All Trims, 1.0L L3 Gas, 1.5L L3 Gas, 1.5L L4 Diesel, 2.0L L4 Diesel)
• 2020-2022 Ford Focus ST IV (2.3L L4 Gas)
• 2020-2022 Lincoln Corsair (Standard, Reserve, 2.0L L4 Turbo Gas, 2.3L L4 Turbo Gas, FWD/AWD)

Fitment Notes

• Does NOT fit Ford Maverick 2.5L L4 Hybrid - use K&N 33-5122 instead
• Does NOT fit Lincoln Corsair Grand Touring (2.5L PHEV) - use K&N 33-5122 instead
• Does NOT fit 2023+ Lincoln Corsair 2.0L - use K&N 33-5151 instead
• Does NOT fit 2025+ Ford Maverick 2.0L - use K&N 33-5151 instead
• Ford Focus IV fitment is for international-market (Mk4) models; not compatible with North American Focus models (discontinued after 2018 in NA)

Features

• Multi-layer oiled cotton gauze media delivers up to 50% more airflow than standard paper OEM filters, improving throttle response and engine power
• Pre-oiled and ready to install directly into the factory airbox - no modifications required for a clean, tool-friendly drop-in fitment
• Washable and reusable design engineered to last the full lifespan of the vehicle, eliminating the need for repeat filter purchases
• Epoxy-coated aluminum wire mesh on both sides protects the cotton media from damage during installation and operation
• Fully compatible with OEM mass airflow sensors and vehicle electronics - will not trigger check engine lights or void factory warranty
• Up to 99% filtration efficiency traps harmful dirt and debris while maintaining high airflow volume
• Emissions legal in all 50 U.S. states and backed by K&N's 10-Year / 1,000,000-Mile Limited Warranty

Specifications

• Part Number: 33-3131
• Filter Style: Panel (Drop-In Replacement)
• Filter Media: Layered Oiled Cotton Gauze
• Outside Length: 10.563 in. (268 mm)
• Outside Width: 8.063 in. (205 mm)
• Height: 1.625 in. (41 mm)
• Overall Filtration Efficiency: Up to 99%
• Cleaning Interval: Every 50,000 miles under normal driving conditions
• Warranty: 10-Year / 1,000,000-Mile Limited Warranty
• Cross References: Ford FA1939, Fram CA12778, WIX WA10981

Included Components

• 1x K&N 33-3131 Pre-Oiled Cotton Gauze Panel Air Filter

Product Description

The K&N 33-3131 is a direct-fit, high-flow replacement air filter engineered for a broad range of Ford and Lincoln vehicles including the Escape, Bronco Sport, Maverick, Focus IV, and Corsair. Its layered, oiled cotton gauze construction allows significantly more air to flow into the engine compared to restrictive factory paper filters, resulting in improved throttle response and noticeable performance gains. The panel-style design ensures a precise, OEM-matched fit inside the existing factory airbox with no cutting, drilling, or modifications needed.

Unlike disposable paper filters that require replacement every 15,000-30,000 miles, the K&N 33-3131 is designed to be washed and re-oiled approximately every 50,000 miles, making it a cost-effective, long-term upgrade. It works seamlessly with all factory electronics including mass airflow sensors, preserving factory drivability while delivering cleaner, higher-volume airflow. Backed by K&N's 10-Year / 1,000,000-Mile Limited Warranty, this filter is built to outlast the vehicle itself.