The K&N 33-2767 is a drop-in panel air filter for the R170 Mercedes-Benz SLK200 and SLK230 four-cylinder models. K&N Engineering builds it from layered, oiled cotton gauze with a flexible frame and an open top. It arrives pre-oiled and seats directly in the factory airbox, so you keep the stock intake tube and airbox in place. It suits SLK230 Kompressor owners searching for a washable R170 intake filter, a K&N drop-in upgrade, or a reusable performance air filter for the 2.3L I4.
Compared with a disposable stock filter, the appeal is reuse. The manufacturer says the element can be cleaned and re-oiled and is designed to last up to 50,000 miles before cleaning, depending on driving conditions. It is also backed by a limited lifetime warranty. The manufacturer rates the media at up to 99% filtration efficiency, which matters for an SLK that sees dusty roads, track days, or hot-weather use. Your buying decision should rest on that durability and filtration. The manufacturer does not publish a horsepower gain for this part, so do not expect a specific number.
The manufacturer lists this filter for SLK200 2.0L and SLK230 2.3L fuel-injected four-cylinder models from 1996 to 2000. Published year ranges for this part vary across references, so check your VIN against the manufacturer's fitment data before ordering. Installation is a short job for a home mechanic, with the main care point being a fully seated airbox and a clean seal around the filter.
Yes. The manufacturer states the filter is washable and reusable, with a recommended interval of up to 50,000 miles before cleaning, depending on driving conditions. After each cleaning, re-oil the element at the manufacturer's stated amount of 1.12 oz (33 ml).
No. The manufacturer describes the filter as ready to drop into the factory airbox, so no modification is needed.
The manufacturer lists 1996 through 2000 for the SLK200 and SLK230 fuel-injected four-cylinder models. Year ranges published for this part differ, so confirm fitment against your VIN with the manufacturer before buying.
This is a beginner-level drop-in swap. Per the manufacturer's general installation approach, you open the airbox, lift out the stock filter, seat the K&N in the same position, and close the box. Owners on SLK enthusiast forums describe the job as quick and easy. Their most common gotcha is an airbox that is not fully seated: the rear of the box often needs firm downward pressure before the retaining clamp snaps into place. Owners also note that the intake hoses are friction-fit and generally hold without extra clamps. Take care that the filter sits flat and the box seals fully, because an unsealed box lets unfiltered air reach the engine. Work on a cool engine and keep the original screws and clips for reassembly.
