11in X-Stream Filter Top

The K&N 11in X-Stream Filter Top is a premium air cleaner lid engineered for operators and enthusiasts who demand precision engine breathing in high-performance or duty-driven vehicles. This component replaces OEM air box tops and integrates seamlessly with K&N's X-Stream intake systems, delivering improved airflow dynamics while maintaining factory fitment integrity. Whether you're running a patrol vehicle, tactical support platform, or personal transport, this aluminum lid upgrade optimizes air induction efficiency without compromise.

Constructed from lightweight aluminum and finished in black powder coat, the 11-inch round design resists corrosion and thermal stress inherent to extended operational duty. The X-Stream technology channels cold air with minimal turbulence, reducing intake temperature and promoting denser fuel mixture—critical for maintaining consistent horsepower and throttle response under demanding conditions. At just 1.31 lbs, the lid imposes negligible weight penalty while the 12 x 2 x 12.1-inch profile ensures compact mounting in tight engine bay environments common to modern platform configurations.

This filter top suits mechanics, fleet maintenance teams, and DIY builders standardizing K&N intake components across multiple vehicles. Installation requires basic hand tools and no modification to existing intake piping—a bolt-on upgrade that complements OEM or aftermarket filter bases without special adapters. Compatibility with 11-inch round air cleaner assemblies makes verification straightforward; cross-reference your current intake diameter before ordering to ensure proper fit and seal.