K&N Engine Air Filter KNA-3174 — 18,000-Mile Long-Life Replacement, High-Flow Filtration

The K&N KNA-3174 is a long-life engine air filter engineered to provide up to 18,000 miles of reliable filtration and straightforward drop-in replacement for compatible vehicles.

K&N has built a reputation since 1969 for high-flow performance filtration; the KNA-3174 brings that expertise to everyday driving with a premium synthetic or cellulose-blend media that balances airflow and protection. Designed to meet or exceed OEM fit and performance, this 18,000-mile replacement filter is a convenient upgrade for drivers who want longer service intervals and trusted filtration without changing their airbox or intake system.

How does this filter protect my engine while lasting longer?

The KNA-3174 uses a refined filter media—either a premium synthetic or a tailored cellulose blend depending on the application—to trap contaminants while preserving airflow. That material choice and K&N's construction method result in up to 99% filtration efficiency and a service life rated at 18,000 miles under normal highway conditions.

• Premium synthetic or cellulose-blend media for high-efficiency particle capture.
• Durable frame and sealing to prevent bypass and maintain fit in the factory air box.
• Rated for 18,000 miles to reduce replacement frequency versus standard filters.

Will the KNA-3174 fit my vehicle and require special installation?

This K&N filter is engineered as a direct-fit replacement to be installed inside your existing factory air box, so no aftermarket housing or intake modifications are required. Most installations take only a few minutes and typically do not need tools, preserving the original equipment layout and warranty-friendly fit.

• Direct-fit design for compatible models—drops into the factory air box.
• Typically tool-free installation in minutes for most applications.
• Designed to meet or exceed OEM fit and function requirements.

What performance differences should I expect compared to standard disposable filters?

Compared with common 12,000-mile disposable filters, the KNA-3174 offers an extended service interval—up to 50% longer—so you change the filter less often. It maintains engine protection up to 99% filtration efficiency, while offering consistent airflow characteristics to support normal engine operation.

• Up to 50% longer replacement interval versus 12,000-mile filters.
• Maintains effective airflow without sacrificing contaminant capture.
• Reduces maintenance frequency and waste from disposable filters.

How should I schedule replacement and care for this long-life filter?

K&N rates this filter for replacement every 18,000 miles under typical highway driving; real-world intervals depend on driving conditions and environment. Inspect during regular service intervals and replace sooner if you frequently drive in heavy dust, off-road, or severe conditions.

• Replace every 18,000 miles under normal highway driving conditions.
• Check filter condition during routine oil changes or inspections.
• Shorten intervals when driving in dusty or severe environments.

Who is this for: The K&N KNA-3174 suits drivers of compatible Mitsubishi, Nissan and Renault models who prefer fewer filter changes, reliable engine protection, and the convenience of a direct-fit replacement. It’s ideal for everyday commuters and road drivers seeking a balance of long service life and proven filtration performance without altering the factory intake.