Volant Primo Closed Box Air Intake System for 2001-2004 Chevrolet Silverado/GMC Sierra 2500HD/3500 (6.6L) - 15866

Fits 2001-2004 Chevrolet Silverado 2500 HD/3500 and GMC Sierra 2500 HD/3500 (6.6L V8 Diesel).

Enhance the breathing capability of your Duramax with the Volant Primo Closed Box Air Intake System. Designed specifically for severe-duty trucks, this system replaces the restrictive factory intake with a rugged, high-flow solution that outflows stock units while shielding the engine from heat soak. The system features a closed-box design to protect the filter from environmental debris and engine bay temperatures, capped with a smoked acrylic see-through lid for easy filter inspection and a premium aesthetic.

At the core of this intake is the Volant Primo Diesel filter. Engineered with eight layers of high-quality textiles pleated between top and bottom aluminum screens, it provides the high flow rates required by performance diesel engines. This oiled, washable filter offers exceptional longevity with maintenance intervals of up to 40,000 miles depending on driving conditions.

• Manufacturer Part Number: 15866
• Filter Type: Oiled, washable 8-layer Primo Diesel textile
• Construction: Rugged cross-linked polyethylene airbox with insulated metallic lid
• Maintenance: Up to 40,000-mile service interval; inspect every 12k-15k miles
• Installation: Easy bolt-on design, installs in under one hour
• Compliance: CARB Approved
• Features: Smoked acrylic see-through lid for quick inspection