K&N High-Flow Engine Air Filter 33-5126 for BMW 760Li & Rolls‑Royce (Washable, Reusable) - Increased Airflow & Lifetime Use

K&N's High-Flow Original Lifetime Engine Air Filter 33-5126 is a washable, reusable filter engineered to boost airflow and support improved engine response for select BMW and Rolls‑Royce models.

This K&N performance filter replaces the factory paper element with multi-layer cotton gauze that allows more air to reach the engine while still trapping contaminants. Built for longevity and ease of service, it installs in your original air box and is cleaned and reused instead of replaced, reducing waste and long-term ownership costs. The 33-5126 fits a range of BMW 7 Series and Rolls‑Royce models produced between 2009 and 2023.

How does this filter affect engine performance?

By offering higher airflow than disposable paper filters, the K&N High-Flow media helps engines breathe more freely, which can translate to smoother throttle response and potential gains in power under certain conditions. The increased flow is achieved without sacrificing filtration efficiency thanks to multiple treated cotton layers.

• Up to 50% increased airflow compared with some stock paper filters.
• Multi-layer cotton gauze captures dust and particulates while permitting extra air.
• Tested under demanding conditions for consistent on-road performance.

What maintenance does the washable filter require?

Maintenance is straightforward: remove the filter, spray-clean with K&N cleaner, rinse, let dry, and lightly re‑oil according to the instructions. Under normal highway driving, the element typically only needs cleaning every 75,000 miles, lowering lifetime service frequency versus disposable filters.

• Clean approximately every 75,000 miles under average driving conditions.
• Simple remove-clean-dry-reoil routine—no special tools needed.
• Reusable design reduces recurring filter purchases and landfill waste.

Is this filter compatible with my vehicle and installation easy?

The 33-5126 is designed to fit directly into the factory air box of specific BMW 760Li, M760Li xDrive and multiple Rolls‑Royce models from 2009–2023. Installation is a quick bolt-and-fit process for most professional and DIY enthusiasts, usually taking only minutes.

• Fits: BMW 760Li (2010–2015), M760Li xDrive (2017–2022), and Rolls‑Royce Cullinan, Dawn, Ghost, Phantom, Wraith (various years through 2023).
• Drop-in replacement—no major modifications required.
• Clear fitment list and simple instructions included for correct installation.

What warranty and longevity can I expect from K&N?

K&N backs these lifetime replacement filters with a long-standing limited warranty, reflecting confidence in the build quality and materials. With rugged construction and proper care, the filter can serve for the life of the vehicle, offering an environmentally friendlier alternative to disposable elements.

• No-hassle limited lifetime warranty (limitations apply).
• Durable construction from premium materials for extended service life.
• Reduces cumulative replacement costs compared to disposable filters.

Who is this for? The K&N High-Flow Original Lifetime Engine Air Filter 33-5126 is aimed at owners of compatible BMW 7 Series and Rolls‑Royce vehicles who want a durable, serviceable air filter that prioritizes airflow and long-term value. It’s a good fit for drivers who prefer OEM-style installation with upgraded filtration performance and those who favor reusable automotive components to cut waste and recurring spend. If you own one of the listed models and want a straightforward, washable upgrade tested under demanding conditions, this K&N element is designed for your vehicle and maintenance habits.