K&N Large Air Filter Service Kit — 32 oz Cleaner, 12.25 oz Red Oil & 2 Stickers for Reusable Filters

K&N Large Size Service Kit delivers a 32 oz cleaner, a 12.25 oz aerosol red filter oil, and two K&N stickers to restore and protect reusable air filters.

Keep a reusable air filter functioning at peak performance with the right cleaning and oiling supplies. This K&N service kit is built specifically for large-panel and cone-style filters and combines a concentrated degreaser with ready-to-use aerosol oil so you can remove trapped dirt and then re-oil the media for optimal filtration and airflow. Regular maintenance with the correct products extends filter life and helps maintain consistent engine breathing characteristics.

How do I use the cleaner and degreaser?

Start by removing the filter from the intake, then spray the 32 oz cleaner generously across both sides of the filter media. Allow the cleaner to soak for several minutes, rinse thoroughly with low-pressure water from the clean side out to flush captured particles, and repeat cleaning if necessary before drying completely.

• Spray both faces of the filter with the 32 oz cleaner until saturated.
• Soak for a few minutes to break down oils and trapped debris.
• Rinse with low-pressure water from clean side outward to avoid embedding dirt.
• Air dry fully before applying oil; do not use heat sources to speed drying.

When and how should I apply the aerosol red oil?

Once the filter is fully dry, apply the 12.25 oz aerosol red oil in light, even coats to the outside of the media, allowing several minutes between coats for even distribution. Aim for full coverage without heavy saturation—multiple light passes provide better control than one heavy spray—then let the oil wick into the fibers before reinstalling the filter.

• Apply short bursts of aerosol oil at a 6–10 inch distance for even coverage.
• Use multiple light coats instead of one heavy coat to avoid oversaturation.
• Allow oil to wick in for several minutes and spread with finger (using glove) if needed.
• Reinstall the filter only after oil is evenly distributed and not dripping.

What does regular maintenance schedule look like?

K&N recommends cleaning and re-oiling on a schedule that depends on driving conditions: clean more frequently in dusty or off-road environments and less often on paved highways. A practical baseline is cleaning every 50,000 miles under normal conditions and re-oiling every 10,000 miles, but inspect the filter visually and adjust frequency to match how much dirt it collects.

• Inspect visually after long trips or dusty conditions; clean sooner if heavily soiled.
• Re-oil after each cleaning and whenever oil looks diminished around the media.
• Baseline suggestions: re-oil ~10,000 miles, clean ~50,000 miles under normal use.
• Shorten intervals for off-road, construction, or desert driving.

Who is this kit for? The K&N Large Size Service Kit is intended for owners of vehicles using K&N reusable large air filters—motorists who prefer washable, long-life filters and want OEM-quality maintenance supplies. It suits DIY mechanics, performance enthusiasts, and anyone who wants to preserve airflow and filtration efficiency while extending filter lifespan. The kit is also handy for professionals performing routine maintenance, offering a ready set of cleaner, aerosol oil, and two branded stickers for identification or branding.