K&N 81-0809 Air-Oil Separator for 2021-24 Ford Bronco 2.3 L EcoBoost

Vehicle Fitment

• 2021-2024 Ford Bronco 2.3 L EcoBoost I4, RWD/4WD

Features

• Captures crankcase blow-by oil vapors before they enter the intake tract
• Helps prevent power loss and engine damage caused by oil contamination
• Large 6 oz capacity reservoir for extended service intervals
• Quick, bolt-on installation in about 30 minutes using factory-style hose connections
• Direct-fit design engineered specifically for the listed Bronco applications
• Durable aluminum tank with black finish and premium hoses for longevity
• No tools required to check or empty the oil-separator reservoir
• Backed by a lifetime limited warranty for performance use

Specifications

• Reservoir capacity: 6 oz (≈0.18 L)
• Tank material: Aluminum, black finish
• Approximate weight: 2.6 lb (1.2 kg)
• Mounts via factory PCV/hose routing - no drilling required
• Street legal in all US states **except California** (Not legal for sale or use in California on a pollution-controlled motor vehicle)

Included Components

• 1x Oil-Separator reservoir assembly
• 2x Hose clamps
• Premium OEM-style hose fittings (pre-installed)
• Installation instructions and mounting hardware

Product Description

The K&N 81-0809 Air-Oil Separator is designed for the high-efficiency 2.3 L EcoBoost I4 engine in the 2021 through 2024 Ford Bronco. By intercepting crankcase blow-by vapors and preventing oil-laden gases from being re-introduced into the intake tract, it protects the throttle body, intake manifold surfaces, and helps maintain optimal engine performance and longevity.

Ideal for Bronco owners who drive off-road, tow, or simply want to preserve the engineering of their EcoBoost engine, this unit offers a true direct-fit upgrade. Installation is simple (around 30 minutes), using factory hose routing and connections - no cutting or welding required. The 6-ounce reservoir helps reduce the frequency of service interventions.

Please note: Fitment is confirmed through 2024 for the listed vehicle. 2025 coverage is unconfirmed at the time of listing. Also note: this product is **not legal for sale or use in California** for vehicles with full emissions control systems installed. Ensure compatibility with your exact engine (2.3 L EcoBoost) and drivetrain (RWD/4WD) before purchase.