K&N Air Oil Separator Catch Can for 2020-2025 Chevrolet/GMC 2500 HD/3500 HD (6.6L)

Fits select 2020-2025 Chevrolet Silverado 2500 HD/3500 HD and GMC Sierra 2500 HD/3500 HD models (6.6L).

The K&N Air Oil Separator (81-0812) protects your engine and intake tract from blowby by capturing oil mist in a high-capacity reservoir before it can enter the combustion chamber. This prevention of oil contamination helps maintain performance and protects internal components from long-term damage. The system replaces the factory line from the crankcase, allowing the reservoir to be mounted in a convenient, accessible location within your engine bay.

Engineered for a precise fit, this catch can utilizes factory-style hose connections that quickly snap into place for a secure seal. Installation typically requires only 30 minutes with basic hand tools. Maintenance is equally simple: the high-capacity reservoir is designed to be checked and emptied without the need for additional tools.

• Captures oil blowby to protect the intake tract and maintain engine power
• High-capacity reservoir engineered specifically for the 6.6L GM engine
• Quick-connect factory-style hoses for a secure, snap-on installation
• Tool-free reservoir maintenance for easy draining
• Includes all necessary hardware for a complete installation
• Manufacturer Part Number: 81-0812
• Backed by K&N's No-Hassle Lifetime Limited Warranty