KYOSTAR Cold Air Intake System for 2001-2004 Chevy Silverado GMC Sierra 2500HD 3500 6.6L V8 Upgrade your compatible 2001-2004 Chevrolet Silverado 2500 HD or 3500, or GMC Sierra 2500HD or 3500 equipped with the 6.6L V8 engine with the KYOSTAR Cold Air Intake System. Designed as a performance-oriented replacement for the factory intake configuration, this system provides an upgraded intake airflow path for the listed Chevrolet and GMC truck applications. The vehicle-specific