K&N 33-2294 High-Flow Washable Air Filter for 2003-2011 BMW 545i/645Ci

Vehicle Fitment

• 2003-2005 BMW 545i Sedan (E60, 4.4L V8, RWD)
• 2004-2005 BMW 645Ci Coupe (E63, 4.4L V8, RWD)
• 2004-2005 BMW 645Ci Convertible (E64, 4.4L V8, RWD)
• 2006-2010 BMW 550i Sedan (E60, 4.8L V8, RWD)
• 2006-2010 BMW 650i Coupe (E63, 4.8L V8, RWD)
• 2006-2010 BMW 650i Convertible (E64, 4.8L V8, RWD)
• 2004-2011 BMW 630i Coupe/Convertible (E63/E64, 3.0L I6, RWD)

Fitment Notes

• Fits vehicles equipped with the factory air intake system only.
• Direct replacement panel air filter for the OEM air box.
• No cutting or modifications required.
• Pre-oiled and ready for installation.

Features

• High-flow multi-layer oiled cotton gauze filter media.
• Designed to improve airflow for increased horsepower and throttle response.
• Washable and reusable for the life of the vehicle with proper maintenance.
• Provides up to 99% overall filtration efficiency.
• Direct OE-style drop-in replacement for easy installation.
• Maintains excellent engine protection while reducing intake restriction.
• Compatible with factory engine management and MAF sensors.
• Backed by the K&N No-Hassle Lifetime Limited Warranty.

Specifications

• Filter Style: Panel
• Filter Media: Oiled Cotton Gauze
• Washable: Yes
• Overall Filtration Efficiency: Up to 99%
• Outside Length: 12.188 in (310 mm)
• Outside Width: 10.688 in (271 mm)
• Height: 1.125 in (29 mm)
• Filter Re-Oiling Amount: 2.02 oz (60 ml)
• Installation Position: Factory engine air box

Included Components

• 1x K&N 33-2294 High-Flow Replacement Air Filter

Product Description

The K&N 33-2294 High-Flow Replacement Air Filter is a premium drop-in upgrade engineered for select BMW E60, E63, and E64 models. Designed to fit directly into the factory air box, it delivers increased airflow while maintaining outstanding filtration efficiency, helping improve throttle response and overall engine performance without requiring modifications.

Built with K&N's signature multi-layer oiled cotton gauze media, this reusable air filter can be cleaned and re-oiled instead of replaced, providing long-term value and reducing maintenance costs. Its precision OE-style fit ensures quick installation and dependable filtration, making it an excellent performance upgrade for both daily-driven and enthusiast BMW applications.