K&N High-Flow Drop-In Air Filter - 2007-2009 Nissan 350Z/370Z / Infiniti G35/G37

Increase airflow and horsepower with the K&N high-flow drop-in air filter. Featuring washable, reusable oiled cotton media and direct-fit design, this premium air filter delivers improved performance, superior filtration, and lifetime value for your 350Z, 370Z, G35, or G37.

Key Features:

• Washable and reusable - lasts vehicle's lifetime
• High-flow oiled cotton media
• Direct drop-in replacement for factory filter
• Increases horsepower and acceleration
• Superior filtration and engine protection
• 10-Year/Million Mile Limited Warranty
• Easy installation - no modifications required
• K&N quality and engineering

Performance Benefits:

• Increased Horsepower: High-flow design allows more air into engine
• Improved Throttle Response: Better airflow enhances engine response
• Lifetime Value: Washable and reusable - never buy another filter
• Superior Filtration: Multi-layered cotton media captures contaminants
• Cost Savings: Reusable design eliminates ongoing filter costs
• Environmentally Friendly: Reduces waste compared to disposable filters

Specifications:

• Brand: K&N Engineering
• Part Number: 33-2399
• Product: High-Flow Drop-In Air Filter
• Media: Oiled cotton
• Layers: Multi-layered design
• Reusable: Yes (washable)
• Warranty: 10-Year/Million Mile Limited Warranty
• Installation: Direct drop-in replacement
• Barcode: 024844199782

Fitment Information:

• 2007-2009 Nissan 350Z (VQ35HR engine)
• 2009 Nissan 370Z (VQ37VHR engine)
• 2007-2008 Infiniti G35 (VQ35HR engine)
• 2008-2009 Infiniti G37 (VQ37VHR engine)
• Note: Verify your vehicle year and engine before ordering
• Installation: Simple drop-in replacement - 10 minutes or less

What's Included:

• K&N high-flow drop-in air filter
• Installation instructions
• Note: K&N Recharger Kit (cleaning supplies) sold separately

Installation Notes:

• Open hood and locate factory air box
• Remove air box cover
• Remove factory air filter
• Install K&N filter in same position
• Replace air box cover
• Installation complete - no tools required

Washable and Reusable Design:

Unlike disposable paper filters that must be replaced every 12,000-15,000 miles, the K&N filter is designed to last the entire life of your vehicle. When the filter becomes dirty, simply clean it with K&N's Recharger Kit, re-oil, and reinstall. This reusable design provides significant cost savings over the vehicle's lifetime while reducing environmental waste. The filter can be cleaned and reused hundreds of times without degrading performance.

High-Flow Oiled Cotton Media:

K&N's signature oiled cotton media consists of multiple layers of cotton gauze sandwiched between aluminum mesh. The cotton fibers are treated with a special oil that captures contaminants while allowing maximum airflow. This design provides superior filtration compared to paper filters while flowing significantly more air. The increased airflow allows the engine to breathe more freely, resulting in measurable horsepower gains and improved throttle response.

Increases Horsepower:

K&N filters are engineered to provide an increase in horsepower by improving airflow to the engine. The high-flow design reduces intake restriction, allowing the engine to draw in more air. More air means better combustion and more power. While gains vary by vehicle, most applications see 1-4 horsepower increases with a K&N filter. The improved airflow also enhances throttle response, making the engine feel more responsive throughout the RPM range.

Superior Filtration:

Despite flowing more air than paper filters, K&N filters provide excellent filtration and engine protection. The multi-layered cotton media captures dirt, dust, and other contaminants before they can enter the engine. K&N filters are tested to meet or exceed OEM filtration standards, ensuring your engine receives the protection it needs. The oiled cotton design is particularly effective at capturing fine particles that paper filters might miss.

10-Year/Million Mile Limited Warranty:

K&N backs their filters with an industry-leading 10-Year/Million Mile Limited Warranty, demonstrating their confidence in the product's quality and durability. This warranty covers the filter for the life of your vehicle, providing peace of mind that your investment is protected. The warranty is one of the best in the industry and reflects K&N's commitment to quality.

Direct Drop-In Fitment:

The K&N filter is designed as a direct replacement for the factory air filter, using the same mounting points and fitting perfectly in the factory air box. No modifications, adapters, or special tools are required - simply remove the old filter and drop in the K&N. The direct-fit design ensures proper sealing and optimal performance. Installation takes 10 minutes or less and can be done by anyone.

Why K&N Engineering?

K&N Engineering has been manufacturing high-performance air filters for over 50 years. Their filters are trusted by millions of vehicle owners worldwide, from daily drivers to professional race teams. K&N pioneered the washable, reusable air filter concept and continues to lead the industry in filtration technology. Every K&N filter is designed, tested, and manufactured to provide superior performance and protection.

Maintenance:

• Inspect filter every 50,000 miles (or as needed based on driving conditions)
• Clean when filter appears dirty or airflow is reduced
• Use K&N Recharger Kit for cleaning and re-oiling
• Allow filter to dry completely before re-oiling
• Apply K&N filter oil evenly to cotton media
• Reinstall after oil has absorbed (typically 20 minutes)

Perfect For:

• 2007-2009 Nissan 350Z and 370Z owners seeking improved performance
• 2007-2009 Infiniti G35 and G37 owners wanting better airflow
• Anyone seeking lifetime air filter solution
• Enthusiasts wanting measurable horsepower gains
• Environmentally conscious drivers reducing filter waste

Perfect For: 2007-2009 Nissan 350Z/370Z and Infiniti G35/G37 owners seeking K&N high-flow drop-in air filter with lifetime warranty.

Pro Tip: The washable, reusable design pays for itself after just a few oil changes compared to disposable filters.

Lifetime Filter: 10-Year/Million Mile warranty. Direct drop-in replacement. Increases horsepower and throttle response.

Upgrade your air intake with K&N high-flow filter - washable, reusable, increased horsepower, superior filtration, lifetime value.