K&N High-Flow Engine Air Filter 33-2456 for 2010–2024 Infiniti/Nissan (Washable, Reusable)

The K&N High-Flow Original Lifetime Engine Air Filter 33-2456 is a washable, reusable performance filter that increases airflow for improved engine response while fitting directly into compatible Infiniti and Nissan factory air boxes.

Designed for drivers who want a durable upgrade without modifying their vehicle, this K&N replacement filter delivers increased air flow up to 50% compared with many disposable paper elements. Its multi-layer cotton gauze media and rugged construction are pre-oiled and ready to install, offering a simple bolt-on improvement for 2010–2024 Nissan Patrol, 2011–2013 Infiniti QX56, 2014–2024 Infiniti QX80 and 2017–2024 Nissan Armada models. Backed by K&N’s limited 10-year/million-mile warranty and built in the USA, the 33-2456 aims to reduce waste while providing long service intervals and straightforward maintenance.

How does this filter affect driving performance?

By allowing a higher volume of clean air to reach the engine, the K&N High-Flow filter can improve throttle response and support peak power delivery under load. It’s engineered to balance maximum airflow with effective contaminant capture, so gains are usable in everyday driving and towing situations.

• Engineered media boosts airflow up to 50% versus many stock paper filters
• Multi-layer cotton gauze increases engine breathing for improved acceleration
• Maintains filtration efficiency to protect engine components

What maintenance does the washable K&N filter require?

Maintenance is infrequent and straightforward: inspect periodically and clean using K&N’s cleaning kit when dirt buildup warrants it. Under normal highway driving, cleaning is typically needed about every 75,000 miles; aftermarket conditions or off-road use may require earlier service.

• Pre-oiled and ready to install—no break-in required
• Clean, re-oil, and reinstall using K&N cleaning kit as directed
• Typical cleaning interval: around 75,000 miles in normal highway use

Is installation direct-fit and vehicle-compatible?

The 33-2456 is designed to drop straight into the factory airbox of listed Infiniti and Nissan models without modification, keeping OEM fitment and sensors intact. Installation is a quick roadside-friendly upgrade that typically takes minutes with basic tools.

• Direct replacement for specified 2010–2024 vehicle models
• No trimming or cutting—uses existing airbox and mounting points
• Retains stock mass airflow sensor operation and engine management

Why choose K&N over disposable paper filters?

K&N filters offer a lifetime service model that reduces recurring filter purchases and landfill waste. Their durable construction and limited warranty make them a cost-effective option for drivers seeking long-term performance and sustainability.

• Washable and reusable—reduces disposable filter replacements
• Durable materials and lifetime warranty for long-term value
• Proudly made in the USA with consistent quality control

Who is this for: The K&N High-Flow Original Lifetime Engine Air Filter 33-2456 is best for owners of compatible Infiniti and Nissan SUVs who want a low-effort performance upgrade, longer service intervals, and a reusable filter option. It suits daily drivers, tow-capable owners, and enthusiasts looking for reliable airflow improvement without altering factory airbox components.