The K&N 33-2936 is a drop-in replacement engine air filter for the R56 Mini Cooper S. It is built to sit inside the factory airbox, so you swap the disposable paper element for a reusable K&N element instead of modifying the intake. The manufacturer describes these filters as designed to increase horsepower and acceleration while still providing filtration. Compared with a cheaper disposable filter, the washable, reusable element and the manufacturer's Million-Mile Limited Warranty make this a long-term purchase rather than a recurring one. Searches for a K&N R56 Cooper S drop-in filter, a 33-2936 replacement, or a washable Mini intake filter will lead to this part.
Fitment is the first thing to verify. Listings for this filter differ on the exact model-year range, with most citing the 2007 to 2009 R56 Cooper S hatchback, while some list a wider span. Before ordering, confirm the year and engine variant against your VIN with the manufacturer. Installation is straightforward on most vehicles: remove the factory paper element and replace it with the K&N, which the manufacturer says is custom sized for the existing airbox. The manufacturer's instruction sheet covers the specific steps for your application. Keep the disposable filter's footprint in mind when you lift the airbox cover, and seat the new element fully so the sealing edge is not pinched.
The manufacturer states the filter is custom designed to fit into the factory air box on these MINI models, so no housing changes are required. Confirm your model year against the manufacturer's application list before ordering.
Yes. The manufacturer's K&N line is designed to be washed and reused rather than replaced at each service interval. Follow the manufacturer's cleaning and oiling instructions to keep the element performing.
This is a beginner-level job that typically requires no special tools. Open the airbox, remove the factory paper element, and drop the K&N in its place with the sealing surfaces seated evenly. Per the manufacturer, the instruction sheet included with the filter gives the step-by-step procedure. Verify fitment before you start, since the year range varies across listings, and avoid overtightening the airbox clips, which can crack the housing.
