K&N Air Filter Cleaning Kit — Service Kit 99-5050, 12 oz Power Kleen + 6.5 oz Red Oil for Oiled Cotton Filters

The K&N Air Filter Cleaning Kit (Service Kit 99-5050) is a complete squeeze-bottle system that cleans, rinses, and re-oils K&N oiled cotton air filters to restore airflow and contaminant capture.

Keep your K&N FilterCharger or other oiled K&N high-flow air filters working at peak performance with a straightforward six-step service routine. This kit combines an industrial-strength degreaser (Power Kleen) and specially formulated red filter oil in convenient squeeze bottles, plus a service decal to remind you when the filter was last maintained. Following the simple spray, rinse, dry, and oil steps removes trapped debris and re-coats the filter fibers for reliable filtration and airflow recovery.

How does this kit restore airflow and filtration efficiency?

The cleaning solution breaks down old oil, trapped dust, and grime so those contaminants can be rinsed away without damaging the cotton pleats. After drying, fresh K&N red filter oil is applied to ensure particles remain captured in the filter media while allowing optimal airflow. The process returns the filter’s balance of breathability and protection close to factory performance.

• Power Kleen degreaser dissolves oil and embedded dirt for effective rinsing
• Rinse and air-dry prevent residue and preserve pleat shape
• Red filter oil re-coats fibers for consistent contaminant capture
• Service decal included for maintenance tracking

What are the step-by-step instructions and included components?

The kit supplies a 12 oz. cleaner and a 6.5 oz. squeeze bottle of red oil plus a service decal; follow the labeled instructions for best results. Generally you spray Power Kleen, allow it to dissolve grime, rinse thoroughly with low-pressure water, let the filter dry fully, then apply oil evenly. Correct application keeps the pleats saturated but not over-oiled, preserving airflow and filtration balance.

• Includes 12 oz. Power Kleen filter cleaner and 6.5 oz. red filter oil
• Spray cleaner, rinse with water, air dry completely, then oil
• Use low-pressure water and avoid direct high-pressure washing
• Apply oil evenly to pleats; wait before reinstalling

Will this kit work with all K&N oiled cotton filters and accessories?

Yes — the formula and oils are made for K&N’s oiled cotton media, including FilterCharger and many reusable high-flow air filters. It is not intended for dry or non-oiled filter types. Using the recommended cleaner and oil keeps warranty-friendly maintenance and ensures compatibility across K&N oiled products.

• Compatible with K&N oiled cotton filters and FilterCharger elements
• Not recommended for dry or non-oiled filter media
• Designed to preserve pleat integrity and filter shape
• Service decal helps maintain consistent intervals

How often should I service my filter with this kit?

Maintenance frequency depends on driving conditions: inspect the filter visually and clean when heavy dirt buildup or oil discoloration is visible. For typical street use, many owners check and service annually or every 12,000–15,000 miles; dusty or off-road environments require more frequent attention. Use the included decal to record the date or mileage each time you service the filter.

• Inspect filter visually; clean when clogged or darkened
• Typical service: about once a year or 12,000–15,000 miles in normal conditions
• More frequent cleaning for dusty, off-road, or heavy-use environments
• Decal provided to log service date or mileage

Who is this for: The K&N Air Filter Cleaning Kit 99-5050 is designed for vehicle owners, performance enthusiasts, and mechanics who use K&N oiled cotton air filters and want a reliable, manufacturer-recommended way to clean and re-oil elements. It’s ideal for people who prefer reusable filters, value consistent airflow and filtration, and want a compact, all-in-one kit to maintain filter life and performance.