The K&N 33-2402 is a reusable, drop-in replacement engine air filter for the 2.4-liter four-cylinder in the 2008 through 2012 Honda Accord. It swaps into the factory airbox in place of the stock paper element, and K&N Air Filters are pre-oiled and ready to drop into your factory air box, so there is no oiling step before installation. It is designed for high air flow while maintaining filtration levels critical to ensure long engine life.
The price is justified by longevity and running cost rather than a dramatic claim. The filter uses 4 layers of premium cotton gauze treated with a specially-designed tacking agent to trap contaminants in a dense mesh. Because it is washable, you clean and re-oil it instead of buying a new disposable element at each service. The manufacturer advises cleaning the engine air filter about every 75,000 miles under normal highway driving conditions. Search terms this part targets include reusable 2008 Accord 2.4L air filter upgrade, washable drop-in high-flow panel filter, and 2.4 L4 Accord performance intake filter.
Fitment is the 2008-2012 Accord with the 2.4L L4 engine, and the manufacturer lists a Height · 1 in (25 mm) profile, so confirm it seats fully in your airbox before closing the lid. Installation is a straightforward drop-in for most owners, which makes this a practical first intake upgrade for a DIY weekend. Verify your exact trim and engine against the manufacturer's fitment guidance before ordering.
The manufacturer lists the 33-2402 for the 2008-2012 Honda Accord with the 2.4L L4 engine. Check your year and engine before ordering, since the manufacturer's listing is the reference for application.
The manufacturer rates the filter as washable and recommends cleaning about every 75,000 miles under normal highway driving conditions. Cleaning and re-oiling the same filter is the intended way to reuse it.
The manufacturer describes this filter as an easy installation that drops into the factory airbox, so it is a beginner-friendly job. Open the airbox, lift out the stock paper filter, note its orientation, and seat the K&N in the same position. Check that the airbox lid closes fully and seals before driving. Follow the instruction sheet supplied with the filter for any model-specific steps, and avoid adding extra oil because the element is already pre-oiled.
