11- GM P/U 6.6L Air Filter

The K&N Engineering 33-2466 air filter is a premium reusable cotton panel air filter element designed for 2011–2014 GM full-size trucks with the 6.6L diesel engine. This performance-grade filter delivers higher airflow than factory paper elements while maintaining effective filtration, making it an ideal upgrade for owners seeking better engine breathing and improved fuel economy without sacrificing engine protection.

Measuring 13.125 x 9.438 inches with a 2.063-inch height, this panel filter matches OEM dimensions for direct fit in the factory airbox. The red cotton media is washable and reusable—a significant advantage over disposable paper filters that require frequent replacement. K&N's cotton construction increases surface area and reduces restriction, allowing the 6.6L to inhale more efficiently while the proprietary oil-treated cotton provides consistent filtration across engine load ranges. This design is particularly effective in high-flow applications where engine modifications or heavy-duty operation demand superior air delivery.

This filter is engineered for diesel truck owners who run their Duramax-equipped Silverado or Sierra in demanding conditions—towing, off-road use, or modified engine setups. The reusable nature reduces long-term maintenance costs compared to disposable alternatives, and the washable media can be serviced multiple times before requiring replacement. Whether used as an OEM replacement for stock trucks or as a performance upgrade, the 33-2466 balances increased airflow with reliable engine protection. Each filter comes individually packaged and ready for installation.