K&N 33-2399 Engine Air Filter

Overview of the K&N 33-2399 Replacement Air Filter

The K&N 33-2399 replacement air filter is designed for high performance and durability, specifically compatible with select INFINITI and Nissan models. This panel air filter uses cotton gauze material and comes pre-oiled for immediate use.

• High performance cotton gauze air filter material
• Flexible frame design for secure fit
• Pre-oiled filter requiring 0.61 oz (18 ml) re-oiling amount
• Panel shape with dimensions 7.125 in x 6.625 in x 1 in
• Washable and reusable for extended service life
• Compatible with INFINITI and Nissan models including 350Z, 370Z, G35, G37, Q40, Q60, EX35, EX37, G25, and QX50
• 1,000,000 miles/10 year warranty

Detailed Product Description

The K&N 33-2399 engine air filter features a panel design constructed from multiple layers of cotton gauze, which provides efficient airflow while effectively trapping contaminants. The flexible frame design ensures a proper seal within the airbox, reducing the risk of unfiltered air entering the engine. This filter is pre-oiled, allowing for immediate installation and optimal filtration performance. Measuring 7.125 inches in length, 6.625 inches in width, and 1 inch in height, it fits precisely in the designated air intake systems of compatible INFINITI and Nissan vehicles.

Compatible Vehicles and Applications

• INFINITI 350Z, 370Z, EX35, EX37, G25, G35, G37, Q40, Q60, QX50
• Nissan 350Z, 370Z, G35, G37, Q40, Q60, EX35, EX37, G25, QX50

This air filter is ideal for drivers seeking a washable, reusable solution that maintains engine performance and protects against dust and debris.

Common Issues Addressed by the K&N 33-2399 Air Filter

• Reduced engine airflow due to clogged or dirty filters
• Decreased fuel efficiency from restricted air intake
• Engine wear caused by contaminants entering the combustion chamber
• Short filter service intervals requiring frequent replacements
• Increased emissions from inefficient air filtration

Installation Notes and Tips

Installation of the K&N 33-2399 replacement air filter is straightforward. Ensure the airbox is clean before inserting the filter to prevent contamination. Since the filter is pre-oiled, no additional oiling is necessary before installation. Periodically inspect and clean the filter according to K&N’s maintenance guidelines to maintain optimal performance and longevity.

Quality Assurance and Warranty

K&N backs the 33-2399 air filter with a 1,000,000 miles or 10-year warranty, reflecting confidence in its durability and performance. The washable and reusable design supports long-term use, reducing the need for frequent replacements and contributing to cost savings over time.