K&N Engine Air Filter KNA-5123 for Jeep Grand Cherokee — 18,000-Mile Long-Life, Tool-Free Install

K&N Engine Air Filter KNA-5123 is a long-life replacement designed to deliver up to 18,000 miles of reliable filtration and easy, tool-free installation into compatible Jeep Grand Cherokee air boxes.

Built on K&N’s decades of high-flow filtration expertise, this replacement air filter combines durable construction with a premium synthetic or cellulose-blend media to protect your engine from airborne contaminants while maintaining airflow. Engineered to meet or exceed OEM specifications, the KNA-5123 is offered as a longer service-life option versus conventional disposable filters, reducing the frequency of replacements for everyday drivers.

How long will this filter last compared with a standard disposable filter?

The K&N KNA-5123 is rated for up to 18,000 miles of normal highway driving—about 50% longer than many 12,000-mile disposable filters. Its construction and media are selected to maintain filtration efficiency over the extended service interval.

• Designed replacement interval: every 18,000 miles under normal conditions
• Approximately 1.5 years of service based on average annual mileage
• Reduces replacement frequency versus 12,000-mile disposables

Will this fit my Jeep Grand Cherokee or Grand Cherokee L?

This specific KNA-5123 part is compatible with model-year 2022–2026 Jeep Grand Cherokee and 2021–2026 Jeep Grand Cherokee L, as well as 2022–2023 Grand Cherokee WL. It is designed to drop into the factory air box and meet OEM fit and function.

• Check vehicle model and year against compatibility list before purchase
• No vehicle modifications required for proper fit
• Installs into the stock air box, preserving factory mounting points

How effective is the filter at protecting the engine while keeping airflow?

The KNA-5123 uses a premium synthetic or cellulose-blend media (depending on application) formulated to balance high airflow with particle capture. K&N reports up to 99% filtration efficiency, helping protect internal engine components while maintaining performance characteristics expected by automakers.

• Premium media provides high particle retention without excessive flow restriction
• Rugged frame and sealing prevent bypass and maintain a reliable air path
• Meets or exceeds OEM filtration and fit standards for the listed vehicles

How difficult is installation and routine replacement?

Installation is straightforward: the KNA-5123 is engineered to drop into the factory air box and typically requires no tools. Replacing the filter is a simple routine service that can be completed in minutes during a seasonal check or service appointment.

• Tool-free fit in most factory air boxes for quick swap-out
• Clear installation steps: open air box, remove old filter, insert new filter, reseal
• Regular replacement cadence simplifies maintenance planning (every 18K miles)

Who is this for: The K&N KNA-5123 suits Jeep Grand Cherokee and Grand Cherokee L owners who want a longer-lasting, vehicle-specific replacement air filter that preserves factory fit and airflow while reducing replacement frequency. It’s ideal for everyday drivers and those who prefer OEM-style installation with the durability and filtration performance associated with K&N’s long-standing reputation.