The K&N E-2872 is a round, high-flow replacement air filter built on K&N's reusable cotton-gauze style element, designed to drop into a factory air box in place of a disposable paper filter. The manufacturer says its filter media is designed to increase horsepower and acceleration while keeping filtration intact, and it rates the filter at up to 99% efficiency. Paper filters must be replaced on a schedule. This one is engineered to be cleaned, re-oiled, and reused for the life of the vehicle, so over time the cost per mile can beat a stream of disposables. Searches for a K&N E-2872 for a Mercedes V8, a reusable round air filter for a 1970s-80s 450SEL or 500SEL, or a high-flow filter to replace the stock paper element all point to this exact part number.
Fitment needs care. The manufacturer's own listing for E-2872 names the Mercedes-Benz 500SE V8-5.0L fuel-injected application for 1979 to 1991, while the product title references V8 with fuel injection for 1976 to 93. Because sources do not fully agree on model years and engine variants, confirm your car's VIN or engine code against K&N's online fitment lookup before ordering. The filter is a round element, so check that your factory air box housing matches that shape and size. The manufacturer lists a product box width of 4.38 in (111 mm).
The manufacturer's listing for E-2872 specifies the Mercedes-Benz 500SE V8-5.0L fuel-injected application for 1979 to 1991. The product title covers a broader 1976 to 93 V8 with fuel injection range. Confirm your model, year, and engine code with K&N's fitment lookup before ordering.
Per the manufacturer, the E-2872 is reusable and engineered to last for the entire lifespan of the vehicle, so it does not need the periodic replacement a paper filter does.
